WO2013088956A1 - 植物のアミノ酸含量を高めるための化合物およびその利用 - Google Patents
植物のアミノ酸含量を高めるための化合物およびその利用 Download PDFInfo
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- WO2013088956A1 WO2013088956A1 PCT/JP2012/080771 JP2012080771W WO2013088956A1 WO 2013088956 A1 WO2013088956 A1 WO 2013088956A1 JP 2012080771 W JP2012080771 W JP 2012080771W WO 2013088956 A1 WO2013088956 A1 WO 2013088956A1
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- plant
- amino acid
- acid content
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/46—N-acyl derivatives
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H3/00—Processes for modifying phenotypes, e.g. symbiosis with bacteria
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/12—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom not containing sulfur-to-oxygen bonds, e.g. polysulfides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
- A01G7/045—Electric or magnetic or acoustic treatment of plants for promoting growth with electric lighting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Definitions
- the present invention relates to a compound for increasing the amino acid content of a plant, a composition containing the compound, and use thereof.
- Amino acids are not only deeply related to the richness and sweetness of foods, but their physiological activity has attracted particular attention in recent years. Accordingly, various products characterized by the amino acid content have been developed. There is also a strong interest in the nutritional value of agricultural products.
- Non-Patent Document 1 describes that the content and composition of free amino acids in cabbage vary depending on harvest time and nitrogen fertilization conditions.
- Non-Patent Document 2 describes that the free amino acid content in spinach varies depending on the soil and fertilizer.
- Patent Document 1 discloses a method of producing a vegetable having a high amino acid content by applying nitrogen fertilizer during the vegetable harvest period.
- Patent Documents 2 to 4 disclose that the content of free amino acids is increased in plants transformed with a specific gene.
- Japanese Patent Publication Japanese Patent Laid-Open No. 10-323128 (published on Dec. 8, 1998)” Japanese Patent Publication “Japanese Patent Laid-Open No. 2003-125661 (published May 7, 2003)” Japanese Patent Publication “Japanese Laid-Open Patent Publication No.
- Patent Documents 2 to 4 it is necessary to use a genetic recombination technique as described in Patent Documents 2 to 4 in order to obtain a plant having an amino acid content increased by a factor of 2 or more, which is described in Patent Document 1. Even if the amino acid content was increased only by such growth management, the effect was slight.
- the present invention has been made in view of the above problems, and its object is to develop a technique for increasing the amino acid content of a plant and to provide a technique for easily producing a plant having an improved amino acid content. is there.
- the present inventors have intensively studied to solve the above-mentioned problems, and as a result, have succeeded in dramatically improving the amino acid content in the plant body by growing a plant administered with glutathione under certain conditions. .
- This effect was a level which cannot be achieved by the conventional nitrogen fertilizer as described in Patent Document 1.
- plants whose amino acid content has been dramatically increased by gene recombination techniques have been produced so far, but the amino acid content of the plant has been dramatically increased only by growth management. There have been no reports of specially enhanced cases.
- the inventors of the present invention can use glutathione to efficiently regenerate callus in a short time (Patent Documents 5 to 6 and the like) and can regulate cell or organ differentiation (Patent Documents 7 to 8 and the like). It has been found that the harvest index of plants can be improved (Patent Document 9 etc.) and the sugar content of plants can be improved (Patent Document 10 etc.). However, there has been no report that the amino acid content of plants is increased by applying glutathione. In addition, the ability to easily increase the amino acid content of a plant is a particularly remarkable effect that exceeds the range that can be predicted by those skilled in the art.
- composition of the present invention is characterized by containing an amino acid content enhancer in order to increase the amino acid content of the plant.
- the kit of the present invention is characterized by comprising an amino acid content enhancer or a composition containing an amino acid content enhancer in order to increase the amino acid content of a plant.
- composition and kit of the present invention may be used for producing a plant having an improved amino acid content.
- the method of the present invention is characterized by including a step of applying an amino acid content enhancer or a composition containing an amino acid content enhancer to a plant.
- the production method of the present invention includes a step of cultivating a plant in the presence of an amino acid content enhancer.
- the plant of the present invention is characterized by being produced by the above production method.
- the present invention does not require the use of genetic recombination techniques, and can be applied to any plant species, so there are many crops and fruit trees that can be used.
- the present invention can enhance the brand power of a desired agricultural product or contribute to the creation of a new brand by increasing the amino acid content of the agricultural product.
- the present invention it is possible to improve and / or improve the content and composition of amino acids in agricultural products, and thus can provide great added value to agricultural products.
- the present invention it is expected to increase the amino acid content of agricultural products such as spring chrysanthemum, spinach, komatsuna, salad vegetables, Chinese vegetables, cabbage, carrots, tea, edamame, and so on.
- agricultural products such as spring chrysanthemum, spinach, komatsuna, salad vegetables, Chinese vegetables, cabbage, carrots, tea, edamame, and so on.
- crops using the present invention can be easily identified, so Easy.
- Various amino acids (alanine, serine, proline, valine, tyrosine, isoleucine, leucine, asparagine, aspartic acid, glutamine, histidine, arginine contained in Arabidopsis 5 weeks after sowing grown under various cultivation conditions , GABA, hydroxyproline, homoserine) is a graph (a) showing the amount per raw weight and a ratio (b) when the control group (Cont) is 1. It is a figure which shows increase / decrease in the production amount of the metabolite in Arabidopsis thaliana which applied glutathione.
- amino acid content enhancer is intended to be a substance that can increase the amino acid content of a plant, and a substance that increases glutathione synthesis or glutathione production is also an amino acid content enhancer. Is included.
- the amino acid content enhancer is preferably a substance that acts by being absorbed into a plant by contacting the plant, and is preferably glutathione or a derivative thereof.
- Glutathione which has a detoxifying action and an antioxidant action in vivo, is a tripeptide composed of ⁇ -Glu-Cys-Gly, and is a sulfur storage form and transport form in plants.
- glutathione derivatives include homoglutathione, carboxypropylglutathione, dicarboxyethylglutathione, and the like, but are not limited to these as long as they have a function of increasing the amino acid content of a plant in the same manner as glutathione.
- Homoglutathione having the same function as glutathione in legumes is a compound in which Gly of glutathione is substituted with ⁇ -Ala.
- glutathione or an ester of the above derivative is also included in the derivative of glutathione.
- the amino acid content enhancer used in the present invention can be a substance selected from the group consisting of oxidized glutathione, reduced glutathione, homoglutathione, carboxypropylglutathione, dicarboxyethylglutathione, and esters thereof. .
- the production conditions of glutathione used in the present invention are not particularly limited, and may be artificially synthesized or derived from natural products.
- the degree of purification may be high or low, and commercially available products may be used.
- Glutathione or a derivative thereof may be a reduced form or an oxidized form, but in many cases, an oxidized form is preferred.
- the inventors of the present invention have been researching the mechanism of plant germination, growth, and flowering, and by culturing callus derived from a part of the plant body in a regeneration medium containing glutathione, By promoting rooting and efficiently obtaining a redifferentiated body from callus in a short period of time (Patent Document 5, etc.), or by cultivating a plant using glutathione, the number of seeds of the cultivated plant and the number of flowers The number of shoots can be significantly increased by cultivating a plant body having a mutation in the synthesis function or response function of a plant hormone (eg, gibberellin) using glutathione.
- a plant hormone eg, gibberellin
- an amino acid content enhancer as a compound may be used directly, or a composition containing an amino acid content enhancer may be used.
- Amino acid content enhancers or compositions may be used.
- a composition is intended to be “a substance in which two or more components are present homogeneously as a whole and grasped as a single substance”, and as used herein, a “composition” is a combination of various components. It is intended to be in the form contained in the substance.
- a “kit” is a container in which the various components to be contained in the composition are contained in separate containers (eg, bottles, plates, tubes, dishes, etc.). It is intended that all of these are packaged as a whole, and may be provided with a support or a culture vessel described later.
- an amino acid content enhancer is used, the amino acid content of the plant can be easily increased, and further, a plant having an improved amino acid content can be produced.
- the amino acid content enhancer is prepared as a liquid form composition on the whole or part of the plant body (stems, leaves, etc.). May be sprayed, dropped or applied.
- the plant when the plant is an aquatic plant such as an aquatic plant, it may be absorbed from the root as a bottom floor additive, or the solid agent may be gradually dissolved in water. Therefore, compared to the above-described conventional technology, it does not require skilled skills, special technology, special production equipment, etc., can easily increase the amino acid content of the plant, and extremely improved plants with improved amino acid content. It can be easily obtained.
- a plant with improved amino acid content is intended to mean a plant with improved amino acid content compared to the same species of plant grown in the absence of an amino acid content enhancer. . If a plant is cultivated using an amino acid content enhancer, the amino acid content of the plant can be improved as compared to the case where it is cultivated without using an amino acid content enhancer. In addition, what is necessary is just to follow a conventionally well-known procedure about the measuring method of the amino acid content in a plant.
- the use concentration of the amino acid content enhancer is preferably 0.2 mM to 5 mM, more preferably 0.5 mM to 5 mM, and even more preferably 1 mM to 5 mM when oxidized glutathione (GSSG) is applied to plants as a liquid composition.
- Liquid form compositions can be prepared by dissolving the amino acid content enhancer in a suitable solvent (eg, water, etc.).
- a suitable solvent eg, water, etc.
- the solvent may contain components other than the amino acid content enhancer, for example, various commercially available fertilizers and surfactants.
- concentration can be suitably changed according to the kind of plant to apply, an application time, etc.
- the amount of the amino acid content enhancer applied to the plant can be adjusted according to the concentration and application conditions, but the amount can be defined by the total amount of the amino acid content enhancer actually applied to the plant. .
- a method of spraying a solution containing an amino acid content enhancer from the upper part of the support, in a container filled with a solution containing an amino acid content enhancer examples thereof include a method of placing a support and irrigating from the bottom.
- the amount of watering from the upper part can be appropriately adjusted according to the cultivation conditions such as the use conditions of the amino acid content enhancer and the pot volume. For example, it is assumed that 1 mM GSSG is used.
- the solution containing the amino acid content enhancer may be wetted substantially uniformly on the support.
- the amount and concentration of the solution used is applied per soil. It can also be defined as the amount of amino acid content enhancer.
- the solution When the composition in liquid form is sprayed directly on the plant, the solution may be sprayed on a part or the whole of the plant in a mist form using a spray or the like.
- the application amount of the solution is appropriately set depending on the concentration of the amino acid content enhancer in the solution.
- the number of spraying may be one time or two or more times, but it is preferable to spray at the start of cultivation. Further, depending on the use conditions of the amino acid content enhancer, additional spraying may be performed as appropriate during the cultivation period (for example, every few days (2 to 7 days)).
- the medium or solution containing the amino acid content enhancer is preferably supplied to the plant after the amino acid content enhancer has been adjusted within the above-mentioned concentration range. It only has to be mixed with the solution. Therefore, even if the medium or solution containing no amino acid content enhancer and the adjuvant are supplied directly or continuously to the outer surface of the plant, they are supplied to the vicinity of the plant (support or soil). Also good. By using such a procedure, a plant can take up a medium or solution mixed with an adjuvant.
- composition for increasing the amino acid content of plants provides a composition for increasing the amino acid content of a plant (hereinafter also referred to as “the composition of the present invention”).
- the composition of this invention should just contain the amino acid content enhancer.
- composition of the present invention is used in the same manner as the amino acid content enhancer described above, the amino acid content of the plant can be easily increased, and further, a plant having an improved amino acid content can be produced.
- the amino acid content enhancer in the present invention is preferably glutathione or a derivative thereof.
- Glutathione includes reduced glutathione (hereinafter referred to as “GSH”) and oxidized glutathione (hereinafter referred to as “GSSG”).
- the glutathione used in the present invention may be of any type. Regardless of whether GSSG is used or GSH is used, a plant having a higher content of all amino acids than that of the control group can be obtained as shown in Examples below.
- Oxidized glutathione is defined as a molecule in which two molecules of reduced glutathione are connected by a disulfide bond. It is well known to those skilled in the art that GSH has a property of being easily oxidized.
- the composition of the present invention contains not a little GSSG. That is, the composition of the present invention may contain GSH and GSSG in a mixed state as glutathione.
- GSH may be contained in the composition of the present invention, and may be used as a form oxidized to GSSG during storage or use, or may be used as a form oxidized to GSSG after application to plants.
- the method for oxidizing GSH to GSSG is not particularly limited. For example, GSH can be easily converted to GSSG by air oxidation. Further, GSH may be converted to GSSG by any conventionally known artificial method.
- composition of the present invention may contain other components as long as the effect of the amino acid content enhancer is not impaired.
- the composition of the present invention may be dissolved in water or a conventionally known liquid carrier and provided in the form of a solution, emulsion, gel or the like.
- liquid carriers include aromatic hydrocarbons such as xylene; alcohols such as ethanol and ethylene glycol; ketones such as acetone; ethers such as dioxane and tetrahydrofuran; dimethylformamide, dimethyl sulfoxide, acetonitrile, and the like. However, it is not limited to these.
- the composition of the present invention may be a solid agent, a powder agent, or the like in which an amino acid content enhancer is supported on a solid carrier component.
- a solid carrier component include inorganic substances such as talc, clay, vermiculite, diatomaceous earth, kaolin, calcium carbonate, calcium hydroxide, white clay, silica gel; organic substances such as wheat flour and starch, but are not limited thereto.
- the composition of the present invention may contain other auxiliary agents as appropriate.
- auxiliary agents examples include anionic surfactants such as alkyl sulfates, alkyl sulfonates, alkyl aryl sulfonates, and dialkyl sulfosuccinates; cationic surfactants such as salts of higher aliphatic amines; Nonionic surfactants such as polyoxyethylene glycol alkyl ether, polyoxyethylene glycol acyl ester, polyoxyethylene glycol polyhydric alcohol acyl ester, cellulose derivatives; thickeners such as gelatin, casein, gum arabic; bulking agents, binding Agents and the like.
- anionic surfactants such as alkyl sulfates, alkyl sulfonates, alkyl aryl sulfonates, and dialkyl sulfosuccinates
- cationic surfactants such as salts of higher aliphatic amines
- Nonionic surfactants such as polyoxyethylene glycol alkyl ether, polyoxyethylene glyco
- the form of the composition of the present invention is not particularly limited, and may be in the form of a liquid, a tablet, a powder, or a granule.
- the composition of the present invention when provided in a liquid form, may be contained in a medium or the like used for growing a plant, or a part of a plant such as a growth point, bud, leaf, or stem, or You may spread, dripping, and apply
- the "medium” for cultivating a plant includes soil and a soil conditioner.
- composition of the present invention may be contained in a medium used when growing a plant when provided in a tablet, powder or granule, or placed in water when applied to a plant cultivated on the water. May be gradually dissolved. It may be provided as a solid agent for dissolving in water and dissolved in water when used. Further, the composition of the present invention may be mixed with conventionally known fertilizers, plant hormones and other chemicals to give to plants.
- the plant cultivated by applying the composition of the present invention has a significantly higher amino acid content than the plant cultivated by applying nitrogen fertilizer (ammonium nitrate). This indicates that it is not always necessary to use a conventional nitrogen fertilizer in order to increase the amino acid content.
- the composition of the present invention may not contain a nitrogen source.
- the present invention also provides a kit for increasing the amino acid content of a plant (hereinafter also referred to as “kit of the present invention”).
- kit of the present invention should just be equipped with the composition (composition of this invention) containing an amino acid content enhancer, or an amino acid content enhancer.
- the kit of this invention may be used in order to manufacture the plant which the amino acid content improved.
- the kit of the present invention may include components other than these substances.
- the amino acid content-enhancing agent and the above-mentioned other components may be provided in one container containing them in an appropriate volume and / or form, or may be provided in separate containers. Moreover, you may provide the instrument, culture medium, etc. for growing a plant.
- the kit of the present invention includes an instruction describing a use procedure for increasing the amino acid content of a plant, or a plant for improving the amino acid content. It is preferable to provide instructions that describe the procedure for use.
- the “instructions” may be written or printed on paper or other media, or may be affixed to electronic media such as magnetic tape, computer readable disk or tape, CD-ROM, etc. .
- the kit of the present invention may be used to constitute the above-described composition, and may comprise the substances contained in the above-described composition separately, or may comprise the above-described composition and additional components separately. May be.
- composition or amino acid content enhancer of the present invention is applied under conditions where the plant can always absorb the amino acid content enhancer.
- the composition or amino acid content of the present invention may be used under conditions that allow the amino acid content enhancer to be absorbed intermittently throughout the cultivation period (for example, conditions applied at intervals of once a week or twice a week).
- An enhancer may be applied, and the composition of the present invention or the amino acid content enhancer may be applied only at a specific growth period.
- the composition or the amino acid content enhancer of the present invention may be given from the time when plant seeds are sown.
- the composition of the present invention or the amino acid content enhancer may be given on the day of sowing, preferably from the day of sowing to sowing. More preferably, it is given periodically for 4 weeks, more preferably from the day of sowing to 7 weeks after sowing, more preferably from the day of sowing to the date of harvest.
- the interval at which the composition of the present invention or the amino acid content enhancer is given is not particularly limited, but is preferably 1 to 4 times per week, more preferably 2 to 3 times.
- the time interval for applying the composition or amino acid content enhancer of the present invention is not particularly limited, and the concentration of the amino acid content enhancer applied, the target plant, and the composition or amino acid content of the present invention What is necessary is just to determine according to the time etc. which apply an enhancer.
- the plant to be applied is a herbaceous plant, it is preferably performed once to twice a week or at the same time as the topdressing time.
- composition or amino acid content enhancer of the present invention When the composition or amino acid content enhancer of the present invention is applied only at a specific time, the composition or amino acid content of the present invention under a condition that the plant can always absorb the amino acid content enhancer for a certain period of time.
- An enhancer may be applied, or the composition of the present invention or the amino acid content enhancer may be applied under conditions that allow the amino acid content enhancer to be intermittently absorbed for a certain period of time.
- the amount of the amino acid content enhancer to be applied is not particularly limited and may be appropriately set according to the type of plant.
- GSSG is applied as an amino acid content enhancer
- GSSG is applied per individual throughout the cultivation period. Is preferably 0.02 mmol or more and 0.5 mmol or less, more preferably 0.05 mmol or more and 0.5 mmol or less.
- the amino acid content enhancer applied in this way is more preferably used within the range of the use concentration described above, but is not limited thereto.
- the composition of the present invention may be applied for a predetermined period after sowing and after growing to some extent, for example, after producing seedlings.
- the composition of the present invention may be applied after growing seedlings.
- the composition of the present invention may be preliminarily contained in a medium for planting the produced seedlings, and after the seedlings are planted in the medium, the composition of the present invention may be periodically applied to the medium.
- composition of the present invention is provided to the medium after replanting the seedling, it is not particularly limited as a more specific application time, but for example, after replanting the seedling and before harvesting, It is preferable to give 1 to 4 times a week, more preferably 2 to 3 times. It does not specifically limit as usage-amount, What is necessary is just to set suitably according to the kind of plant.
- the time to give the composition of the present invention or the amino acid content enhancer may be set by calculating backward from the harvest time. For example, it may be set such that it is given from 10 days before the harvest time, or given from 20 days before.
- harvest time refers to the seed harvest time when the seed is a harvest, and refers to the harvest time of the leaf when the leaf is a harvest, regardless of the form of the harvest.
- the time when the composition of the present invention or the amino acid content enhancer is applied may be set based on the time when flowers are added. For example, it may be applied at the time of buds, or after the petals are scattered, or from the time of buds until the fruits are ripened, and from the time of flowering until the fruits are ripened, the petals are scattered. Until the fruit is produced, the composition of the present invention or the amino acid content enhancer may be applied or applied to the inflorescence.
- the composition of the present invention is preferably in the form of a tablet, powder or granule. And it is preferable that the amino acid content enhancer is contained in the composition so that the final concentration of the amino acid content enhancer in the obtained solution falls within the above-mentioned range.
- the composition of the present invention or the amino acid content enhancer during cultivation is mixed with a fertilizer and / or a plant hormone or the like and applied to the plant as described above. May be. In this case, it does not specifically limit as the time which gives the mixture of the said fertilizer etc. and a composition, You may follow the above-mentioned illustration and may follow the preferable time which gives a fertilizer etc.
- plant refers to the whole plant, plant organs (eg, leaves, petals, stems, roots, seeds, etc.), plant tissues (eg, epidermis, phloem, soft tissue, xylem, vascular bundle, fence-like shape) Tissue, spongy tissue, etc.) or plant culture cells, or various forms of plant cells (eg, suspension culture cells), protoplasts, leaf sections, callus, etc. are contemplated.
- the plant to which the present invention is applied is not particularly limited, and can be applied to various monocotyledonous plants, dicotyledonous plants, plants such as trees, and the like.
- monocotyledonous plants include, for example, duckweed plants including duckweed plants (duckweed) and duckweed plants (duckweed, Hingemo); cattleya plants, cymbidium plants, dendrobium plants, phalaenopsis plants, vanda genera Plants, Paphiopedilum spp., Oncidium spp., Etc .; Rubiaceae plants; Rubiaceae plants; Rubiaceae plants; Relatives plants; Thorny plants; Tochika department plant, Japanese cucurbitaceae plant, Gramineae plant (such as corn such as sweet corn), Kasuragigusa plant, Palmiaceae plant, Sugar beet family plant, Hosogusa plant, Thousandaceae plant, Mizuaoi family plant, rush family plant, Rabbit family
- examples of dicotyledonous plants include Asagao genus plants (Asagao), Convolvulus genus plants (Convolvulus, Coleoptera, Clamgao), Sweet potato species (Gumbai convolvulus, Sweet potato), and Neonka quail plants (Nenka quail, Legumes).
- Plants Nadesico genus plants (carnations, etc.), Jacobe genus plants, Takanetus genus plants, Miminagusa genus, clover genus plants, Nominotsutsuri genus plants, Oyafusuma genus plants, Waigaiso genus plants, Hamahakobe genus plants, Otsumexa genus plants, Shiotsuma genus Plants, mantemae plants, genus plants, genus fusiflora, nanbanjakobe plants; anemoneaceae plants; aroma family plants, donut family plants, anthropaceae plants, anthropaceae plants, anthropaceae plants, yam family Plant, walnut plant , Birch family plant, beech family plant, bittern family plant, laceaceae plant, iridaceae plant, dendrobaceae plant, sweet potato family plant, shabby genus plant, duck family plant,
- the site where the amino acid content in the plant is improved is not particularly limited, and even in the harvest, other sites (for example, organs used only for the purpose of extracting amino acids) Or organization).
- “Crop” refers to the part of the plant that serves as food, for example, in the case of a plant that eats fruit, in the case of a plant that eats seeds, in the case of a plant that eats seeds, in the case of a plant that eats stems, In the case of plants that do, roots, in the case of plants that eat flowers, and in the case of plants that eat leaves, leaves and the like are intended, but not limited thereto.
- the present invention provides a method for increasing the amino acid content of a plant (hereinafter referred to as “the method of the present invention”).
- the method of this invention should just include the process of applying the composition or amino acid content enhancer of this invention to a plant.
- the above step allows the target plant to absorb the amino acid content enhancer even in the step of contacting the amino acid content enhancer with the target plant. It can also be a process.
- the procedure for causing the plant to absorb the amino acid content enhancer is not particularly limited, and for example, roots are cultivated by cultivating the plant in a medium (including soil and soil conditioner) containing the composition of the present invention or the amino acid content enhancer.
- the plant absorbs the amino acid content-enhancing agent by giving, spraying, or applying the composition or the amino acid content-enhancing agent of the present invention as a granule or liquid fertilizer during cultivation of the plant. You may make it do.
- the plant or the amino acid content enhancer may be adsorbed on an adsorbent such as an ion exchange resin, and the plant may be cultivated after being placed in a medium such as being embedded in soil. That is, the method of the present invention further includes a step of cultivating a plant in the presence of an amino acid content enhancer.
- an amino acid content enhancer such as an ion exchange resin
- the concentration of the amino acid content enhancer to be applied may be high or low within the range in which the amino acid content of the plant can be increased.
- the desired effect can be derived by setting.
- the concentration range of the amino acid content enhancer that is brought into contact with the plant is preferably 0.2 mM to 5 mM, more preferably 0.5 mM to 5 mM, still more preferably 1 mM to 5 mM, and even more preferably 2 mM to 5 mM.
- the amino acid content of the plant can be increased.
- the total amount of the amino acid content enhancer given to the plant throughout the cultivation period can be converted to the amount of GSSG.
- the amount of GSSG used for a cultivation period of 4 weeks is preferably in the range of 12.5 mg to 300 mg per plant, and preferably in the range of 60 mg to 1450 mg per liter of soil.
- the period which cultivates a plant by applying GSSG is not specifically limited, It is preferable to be from 4 weeks (28 days) before harvest to the harvest time.
- the contact time with the plant body becomes longer, and the effect is exerted with a smaller amount of application than when used for soil and plants as liquid fertilizer. be able to.
- the amino acid content is improved in the plant to which the method of the present invention is applied.
- the method of the present invention may further include a step of measuring the amino acid content in the plant to which the amino acid content enhancer is applied.
- the amino acid content in the target crop of the plant is improved by the method of the present invention.
- the method of the present invention may further include a step of measuring the amino acid content in the target crop of the plant to which the amino acid content enhancer is applied.
- the measuring method of the amino acid content in a plant what is necessary is just to follow a conventionally well-known procedure, and the procedure as described in the Example mentioned later may be sufficient.
- the method of the present invention further includes a step of controlling the light conditions at the time of harvesting the plant to which the present invention is applied in order to control the effect of the present invention (that is, the effect of increasing the amino acid content of the plant).
- the effect of the present invention that is, the effect of increasing the amino acid content of the plant.
- Good there are amino acids whose contents are increased and amino acids whose contents are decreased by combining application of an amino acid content enhancer and light irradiation before harvesting.
- the content of the target amino acid can be increased successfully, or the content ratio of the amino acid in a crop can be adjusted to a desired value.
- the control of the light condition may be a change from a bright condition to a dark condition, a change from a dark condition to a bright condition, or a change in the amount of light under a bright condition.
- the start time and the control period are not particularly limited as long as the harvest is performed before harvesting, and the harvest is performed after 8 hours or more from the start of the control and before the end of the control.
- the start of control may be before or after the start of application of the amino acid content enhancer to the plant, and is preferably performed after the start of application of the amino acid content enhancer.
- the method of the present invention further includes a step of controlling the temperature condition of the cultivation period of the plant to which the present invention is applied in order to control the effect of the present invention (that is, the effect of increasing the amino acid content of the plant). Also good.
- the amino acid content can be improved.
- the control of the temperature condition may be a change from a high temperature condition to a low temperature condition or a change from a low temperature condition to a high temperature condition, and the control is started after sowing (preferably germination) and the control ends. If the harvesting is performed before, the start time and the control period are not particularly limited.
- the start of control may be before or after the start of application of the amino acid content enhancer to the plant, and is preferably performed after the start of application of the amino acid content enhancer.
- the present invention further provides a method for producing a plant having an improved amino acid content (hereinafter referred to as “the production method of the present invention”).
- the production method of the present invention is characterized by using the above-described method of the present invention, the step of applying the composition of the present invention or the amino acid content enhancer to a plant, and the plant in the presence of the amino acid content enhancer. What is necessary is just to include the process to grow.
- the production method of the present invention preferably further includes a step of measuring the amino acid content in the plant to which the amino acid content enhancer has been applied, and the amino acid content in the target crop of the plant to which the amino acid content enhancer has been applied. It is also preferable to further include the step of measuring
- the production method of the present invention is an amino acid compared to a plant cultivated in the absence of an amino acid content enhancer. More preferably, the method further includes a step of selecting a plant having an improved content. By having the said structure, the target plant can be selected successfully.
- the method includes a step of selecting a plant having a profile characteristic of a plant cultivated in the presence of an amino acid content enhancer as described later.
- the profile used here may be a metabolite production amount profile obtained by profiling a metabolite production amount or a gene expression amount profile obtained by profiling a gene expression amount.
- the target plant may be selected based on the comparison with the metabolite generation amount profile or gene expression level profile acquired in advance, but the step of acquiring the metabolite generation amount profile or gene expression level profile in the plant May further be included.
- the method for obtaining the metabolite production amount profile is not particularly limited, and a conventionally known method for measuring the amount of metabolite can be used.
- a conventionally known method for measuring the amount of metabolite can be used.
- the metabolite production amount profile can be acquired as follows, for example.
- Use hierarchical clustering (HCA: Hierarchical Cluster Analysis) that quantifies the trend of increase or decrease in the amount of each metabolite produced between samples measured using CE-TOFMS and groups similar results.
- HCA Hierarchical Cluster Analysis
- the dendrogram and Heat Map obtained in this manner include a unique tendency for each applied condition, for example, the plant obtained by the method of the present invention and the plant in the control plot can be easily obtained. Can be distinguished.
- the present invention further provides a plant having an improved amino acid content (hereinafter referred to as “the plant of the present invention”).
- the plant of the present invention is a plant obtained by the production method of the present invention.
- the plant of the present invention is not particularly limited as long as it is listed above as the “plant to which the present invention is applied”, and may be a terrestrial plant or an aquatic plant, and the aquatic plant is an algae. Preferably there is.
- the plant of the present invention can be identified by comparing metabolite production amount profiles obtained using metabolomic analysis or the like.
- an amino acid content enhancer eg, GSSG
- a metabolite production profile in a plant cultivated by applying an amino acid content enhancer Is also different from the metabolite production amount profile obtained in plants cultivated by other methods. Therefore, whether or not the plant is obtained by the production method of the present invention by obtaining a metabolite production amount profile of the plant to be investigated and comparing it with the previously obtained metabolite production amount profile of the present invention. Can be easily and clearly determined.
- a gene expression profile of a plant cultivated by applying an amino acid content enhancer (eg, GSSG) (also referred to as a gene expression profile of the present invention) is cultivated by other methods. It may be different from the gene expression profile obtained in the plant obtained.
- the gene expression level profile of the plant to be investigated by acquiring the gene expression level profile of the plant to be investigated and comparing it with the gene expression level profile of the present invention acquired in advance, it is easy to determine whether the plant is obtained by the production method of the present invention. And it can be determined clearly. As yet another example, it can be determined whether or not GSSG has been applied by comparing with a pattern change examined in advance from a two-dimensional electrophoresis image of glutathione-binding protein. It is also possible to confirm that the plant of the present invention is not a plant obtained by gene transfer (transformation) by confirming the target gene in the plant by PCR method, Southern hybridization method, Northern hybridization method or the like. it can.
- a plant obtained by the method of the present invention is obtained by a method other than the method of the present invention by examining at least one of the amount and ratio of the amino acid content enhancer in the plant. And can be clearly distinguished.
- Such a method may be performed alone or in combination. By performing a combination of a plurality, the plant of the present invention and the plant obtained by a method other than the method of the present invention can be more clearly distinguished.
- Arabidopsis thaliana was grown at 22 ° C. under daylight conditions of 16 hours light period / 8 hours dark period with light of 100 ⁇ E / m 2 intensity. Growth experiments were conducted using soil formed by layering vermiculite (Asahi Kogyo) 2 on the lower layer, Kureha nursery soil (Kureha) 1 on the middle layer, and vermiculite (Asahi Kogyo) 1 on the upper layer.
- plants were given water only (Cont), 1 mM oxidized glutathione (GSSG) solution, 2 mM reduced glutathione (GSH) solution, or 3 mM ammonium nitrate (NH 4 NO 3 ).
- GSSG oxidized glutathione
- GSH reduced glutathione
- NH 4 NO 3 ammonium nitrate
- CE-TOFMS capillary electrophoresis-time-of-flight mass spectrometer: Agilent CE-TOFMS system (Agilent Technologies)
- the detected peaks were collated against a database based on m / Z and electrophoresis time, and amino acids were searched, identified and quantified.
- the specimen used for CE-TOFMS was prepared as follows. First, 500 ⁇ L of a methanol solution containing a leaf sample and 50 ⁇ M of an internal standard substance was placed in a crushing tube, frozen with liquid nitrogen, and crushed using a desktop crusher. To this, 500 ⁇ L of chloroform and 200 ⁇ L of Milli-Q water were added and stirred, followed by centrifugation (2300 ⁇ g, 4 ° C., 5 minutes). After centrifugation, the aqueous phase was transferred to an ultrafiltration tube (MILLIPORE, Ultra Free MC UFC3 LCC centrifugal filter unit 5 kDa) 400 ⁇ L ⁇ 1. This was centrifuged (9100 ⁇ g, 4 ° C., 120 minutes), and an ultrafiltration treatment of the aqueous phase was performed. The filtrate was dried and dissolved in 50 ⁇ L of Milli-Q water and used for measurement.
- MILLIPORE Ultra Free MC UFC3 LCC centrifugal filter unit 5 kDa
- FIG. 1 (a) The results of amino acid content determined using CE-TOFMS are shown in FIG.
- FIG. 1 (a) when the total free amino acid content in the plants 4 weeks after sowing was compared, the total free amino acid content of the control group (1) fed with water alone was compared with the GSSG-treated group ( The total free amino acid content of 2) or GSH-treated section (3) was about 2.8-fold or about 2.9-fold, respectively, showing a marked increase.
- the ammonium nitrate treatment section (4) as a nitrogen source no increase in the amino acid content was observed.
- the total free amino acid content was lower than that of the plant after 4 weeks of sowing under all conditions.
- the total free amino acid content of the GSSG-treated group (2) or GSH-treated group (3) was about 2.0 times or about 2.4 times the total free amino acid content of the control group (1) There was a marked increase.
- the amino acid content was slightly increased (about 1.37 times), unlike the case of the plant 4 weeks after sowing, but clearly less than the glutathione treatment group. It was.
- FIG. 2 (a) shows the amount of each free amino acid of Arabidopsis thaliana grown for 4 weeks after sowing in the presence of an amino acid content enhancer under the same conditions as described above and quantified by CE-TOFMS. Although the absolute amount of each amino acid is greatly different for each amino acid, any of the amino acids shown in FIG. As shown in FIG. 2 (b), there was a significant increase (about 1.5 to about 30 times) in the content of some amino acids.
- FIG. 3 (a) shows the amount of each free amino acid in Arabidopsis thaliana grown for 5 weeks after seeding and quantified by CE-TOFMS in the presence of an amino acid content enhancer under the same conditions as described above. Although the absolute amount of each amino acid is greatly different for each amino acid, all the amino acids shown in FIG. As shown in FIG. 3 (b), there was a significant increase (about 1.5 times to about 20 times) in the content of some amino acids.
- FIG. 4 shows a metabolite production profile obtained when Arabidopsis thaliana was treated with oxidized glutathione (GSSG) and reduced glutathione (GSH) at the same time as the amino acid analysis, and a comparative analysis was performed.
- GSSG oxidized glutathione
- GSH reduced glutathione
- the measured amount of metabolite produced was classified as shown in the tree diagram of FIG. Furthermore, the classification of metabolites was more visually expressed by showing the degree of increase and decrease in the Haet Map format.
- SampleStat ver 3.13 and PeakStat ver. 3.17 (both manufactured by Human Metabolome Technologies, Inc.) were used for hierarchical clustering and creation of Heat Map. From FIG. 4, it is possible to recognize a cluster of metabolites that increases characteristically in the GSH treatment section and a cluster that increases characteristically in the GSSG treatment section. Thus, it is shown that a production profile of a characteristic metabolite can be obtained from the glutathione application section, and it is possible to distinguish a plant that has been treated with glutathione and improved in amino acid from an untreated plant. I understood.
- the degree of improvement of each free amino acid content by glutathione was different depending on the light conditions at the time of sampling. For example, as shown in FIG. 5, for ⁇ -alanine, glycine, proline, threonine, serine, and glutamic acid, the content in the leaf 8 hours after light irradiation (L8) is the content in the leaf before light irradiation (L0). Had risen more than. On the other hand, for leucine, valine, histidine, alanine, asparagine, aspartic acid, arginine, and glutamine, the content in the leaves sampled before light irradiation (L0: dark condition) was 8 hours after light irradiation (L8). It was better than.
- the serine content (nmol / g FW) is shown in FIG.
- the serine content in the leaves is significantly improved by combining the treatment of oxidized glutathione or reduced glutathione with light irradiation. Such a remarkable effect was not observed in the control group and the ammonium nitrate fertilized group.
- the content (nmol / g FW) of asparagine is shown in FIG.
- the content of asparagine is greatly improved by applying oxidized glutathione or reduced glutathione, but the effect is greater before light irradiation. Such an effect was not observed in the control group and the ammonium nitrate fertilized group.
- amino acid content can be further improved by controlling the light conditions at harvest time in addition to the application of glutathione.
- CE-TOFMS capillary electrophoresis-time-of-flight mass spectrometer: Agilent CE-TOFMS system (Agilent Technologies)
- cation mode anion mode
- FIG. 8 and FIG. 9 show the amino acid content of spinach treated with glutathione, with 1 for the control group.
- the effect of glutathione was observed only with some amino acids, and the effect was small.
- various amino acid contents were improved under high temperature conditions.
- oxidized glutathione it was shown that the amino acid content of tyrosine, glycine, homoserine, and phenylalanine was improved 5 times or more.
- oxidized glutathione can be used more favorably than reduced glutathione.
- CE-TOFMS capillary electrophoresis-time-of-flight mass spectrometer: Agilent CE-TOFMS system (Agilent Technologies)
- cation mode anion mode
- FIG. 10 and FIG. 11 show the amino acid content of Komatsuna treated with glutathione, with 1 for the control group.
- the effect of improving the amino acid content by glutathione was limited to some amino acids such as ⁇ -alanine, asparagine, and glutamine under high temperature conditions.
- the content of more amino acids was improved under low temperature conditions.
- Komatsuna it was shown that by applying reduced glutathione, the amino acid content of aspartic acid, threonine, GABA, isoleucine, asparagine, glutamine, arginine was improved more than twice.
- Komatsuna it was found that reduced glutathione can be used more favorably than oxidized glutathione.
- CE-TOFMS capillary electrophoresis-time-of-flight mass spectrometer: Agilent CE-TOFMS system (Agilent Technologies)
- cation mode anion mode
- FIG. 12b shows the ratio of the free amino acid content in the treated group at each concentration when the free amino acid content in the control group is 1.
- the total free amino acid content was 24.8 times, showing a particularly remarkable effect.
- the content of glycine, asparagine, histidine, homoserine, glutamine, and arginine increased about 100 times or more when 5 mM GSSG was used, and arginine showed a remarkable increase of 1070 times, the maximum.
- Example 2 In the same manner as in Example 1, the collected fruit was used as a specimen, and CE-TOFMS (capillary electrophoresis-time-of-flight mass spectrometer: Agilent CE-TOFMS system (Agilent Technologies)) was used to measure in the cation mode and anion mode. Carried out. The detected peaks were collated against a database based on m / Z and electrophoresis time, and amino acids were searched, identified and quantified. The obtained result is shown in FIG.
- CE-TOFMS capillary electrophoresis-time-of-flight mass spectrometer: Agilent CE-TOFMS system (Agilent Technologies)
- FIG. 13 shows the ratio of the amino acid content in the fruit when the GSSG granule or GSH granule is applied to the amino acid content of the fruit in the control group.
- the GSSG granule was used, an increase in amino acid content was observed in the fruit collected 20 days after the granule treatment. Furthermore, in the fruit collected 29 days after the granule treatment, the content of all amino acids was improved, and the total free amino acid content was 2.2 times.
- GSH granules were used, an increase in the content of some amino acids was observed 20 days after the granule treatment, and all amino acid contents were improved after 29 days.
- the total free amino acid content when the GSH granule was treated was 1.5 times that of the control group, and it was found that the GSSG granule can be preferably used.
- the method of the present invention can improve the amino acid content not only in crop leaves but also in fruits. Moreover, it was shown that the glutathione used in the present invention does not depend on the dosage form, and in addition to liquid fertilizer, a granule or the like holding glutathione can be used.
- Solution soil cultivation in a pot was carried out, and as additional fertilization, one obtained by diluting Otsuka Nourishment soil cultivation No. 5 (NPK: 12-20-20) to EC 0.6 to 1.0 dS / m, Served simultaneously with irrigation 2-3 times a day.
- Example 2 Glutathione was applied on July 31, 2012 at 4.8 g / pot of GSSG granules.
- the edible portion collected 4 weeks after application of the granules was subjected to measurement of amino acid content.
- CE-TOFMS capillary electrophoresis-time-of-flight mass spectrometer: Agilent CE-TOFMS system (Agilent Technologies)
- the detected peaks were collated against a database based on m / Z and electrophoresis time, and amino acids were searched, identified and quantified. The obtained result is shown in FIG.
- FIG. 14 shows arginine content and lysine content in leek subjected to GSSG treatment.
- the arginine content was improved by 1.8 times and the lysine content was improved by 1.6 times compared to the GSSG untreated group (control). From this, it was found that even in leek, which is a monocotyledonous plant, the amino acid content can be improved by glutathione treatment.
- the present invention can be in the following aspects: [1] A composition for increasing the amino acid content of a plant, comprising an amino acid content enhancer. [2] The composition of 1, wherein the amino acid content enhancer is glutathione or a derivative thereof. [3] The composition according to 1 or 2, wherein the amino acid content enhancer is oxidized glutathione, reduced glutathione, or an ester thereof. [4] The composition of 1 to 3, which is in the form of a liquid, tablet, powder or granule. [5] The composition of 1 to 4, which does not contain a nitrogen source. [6] A composition of 1 to 5, which is used for producing a plant having an improved amino acid content.
- a kit for increasing the amino acid content of a plant comprising an amino acid content enhancer or a composition containing the amino acid content enhancer.
- the kit of 7 comprising an instruction document describing a use procedure for increasing the amino acid content of a plant.
- a method for increasing the amino acid content of a plant comprising a step of applying to the plant an amino acid content enhancer or a composition containing the amino acid content enhancer.
- the method of 10 further comprising the step of cultivating a plant in the presence of an amino acid content enhancer.
- the method of 1 to 24, wherein the plant to be applied is a terrestrial plant.
- the method of 1 to 24, wherein the plant to be applied is an aquatic plant.
- the method according to 26, wherein the aquatic plant is algae.
- 28 plants, wherein the plant to be applied is a terrestrial plant.
- 28 plants, wherein the plant to be applied is an aquatic plant.
- 30 methods or plants, wherein the aquatic plant is algae.
- the amino acid whose content in the plant is improved by the amino acid content enhancer used in the above 1 to 31 varies depending on the plant species and is not particularly limited.
- GABA glutamic acid, ⁇ -alanine, aspartic acid, alanine, lysine, threonine
- It is preferably at least one amino acid selected from the group consisting of hydroxyproline, leucine, serine, tryptophan, valine, tyrosine, phenylalanine, proline, isoleucine, glycine, asparagine, histidine, homoserine, glutamine and arginine, proline
- the arginine is at least one amino acid selected from the group consisting of isoleucine, glycine, asparagine, histidine, homoserine, glutamine and arginine. It is particularly preferred.
- composition of the present invention a plant having an improved amino acid content can be easily produced. Therefore, the present invention can be used in industries such as agriculture and the food industry. The scope of application seems to be extremely wide across plants and agricultural products. Considering the recent health orientation, plants with improved amino acid content are highly marketable.
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Abstract
Description
本明細書中で使用される場合、「アミノ酸含量亢進剤」は、植物のアミノ酸含量を高めることができる物質が意図され、グルタチオンの合成またはグルタチオン生成量を増大させる物質もまた、アミノ酸含量亢進剤に包含される。本発明において、アミノ酸含量亢進剤は、植物に接触させることによって植物に吸収されて作用する物質であることが好ましく、グルタチオンまたはその誘導体であることが好ましい。
本発明は、植物のアミノ酸含量を高めるための組成物(以下、「本発明の組成物」ともいう。)を提供する。本発明の組成物は、アミノ酸含量亢進剤を含有していればよい。
本発明は、植物のアミノ酸含量を高める方法(以下、「本発明の方法」という。)を提供する。本発明の方法は、本発明の組成物またはアミノ酸含量亢進剤を植物に施用する工程を包含すればよい。
シロイヌナズナを、100μE/m2の強さの光で16時間明期/8時間暗期の日長条件下にて22℃で育成した。培地には、下層にバーミキュライト(旭工業)2、中層にクレハ育苗培土(クレハ)1、上層にバーミキュライト(旭工業)1の割合で重層して形成される土壌を用いて生育実験を行った。
図2(a)は、上記と同様の条件のアミノ酸含量亢進剤の存在下で、播種後4週間生育し、CE-TOFMSにて定量したシロイヌナズナの各遊離アミノ酸の量を示したものである。各アミノ酸の絶対量は、アミノ酸ごとに大きく異なるが、図2に示したいずれのアミノ酸も対照区(Cont)に比べ、GSSG処理区及びGSH処理区で大きな増加がみられた。図2(b)に示されるように、いくつかのアミノ酸について、その含量に著しい増加(約1.5倍~約30倍)がみられた。具体的には、プロリン、チロシン、アスパラギン、グルタミン、グルタミン酸、メチオニン、ヒスチジン、アルギニンの含量において明らかな増加がみられ、特にアスパラギン、グルタミン、アルギニンにおいて顕著な増加がみられた。また、GABA,ヒドロキシプロリン,ホモセリン等のタンパク質を構成する主要なαアミノ酸以外のアミノ酸についても増加がみられた。なお、窒素肥料の添加(NH4NO3)では、アミノ酸含量の増加が殆どみられなかった。
図4は、シロイヌナズナに酸化型グルタチオン(GSSG)と還元型グルタチオン(GSH)を処理したときの代謝物質生成量プロファイルを上記アミノ酸分析と同時に作成し、これを比較解析したものである。CE-TOFMSでは、アミノ酸以外にも多くの代謝物質を検出することが可能であるが、ここでは、CE-TOFMSで得られた132個の候補物質を定量した結果において、測定したサンプル間での各代謝物質量の増減の傾向を数値化し、類似した結果を示したものをグループ分けする階層的クラスタリング(HCA:Hierarchical Cluster Analysis)を用いて分類した。測定した代謝物質の生成量を、図4の樹形図に示すように分類した。さらに、増減の程度をHaet Mapの様式にて示すことによって代謝物質の分類をより視覚的に表した。階層的クラスタリングおよびHeat Mapの作成には、SampleStat ver3.13およびPeakStat ver.3.17(共に、ヒューマン・メタボローム・テクノロジーズ株式会社製)を用いた。図4から、GSH処理区にて特徴的に増加する代謝物質のクラスターやGSSG処理区にて特徴的に増加するクラスターを認めることができる。このように、グルタチオン施用区からは特徴的な代謝物質の生成プロファイルを得られることが示され、グルタチオンを処理しアミノ酸が向上した植物と、未処理の植物を区別することが可能であることが分かった。
実施例1と同様の栽培条件で生育させたシロイヌナズナにおいて、光(100μE/m2/s)を照射する前(L0)の葉と、8時間の光照射後(L8)の葉におけるアミノ酸含量を比較した。アミノ酸含量の計測を実施例1と同様に行った。対照区(Cont)、1mM GSSG処理区、2mM GSH処理区、3mM硝酸アンモニウム(NH4NO3)処理区における、葉内の各アミノ酸含量を図5に示した。
〔1:ホウレンソウの栽培温度制御による各遊離アミノ酸含量への影響〕
アカザ科の野菜であるホウレンソウの、グルタチオンを施用する場合の栽培条件を検討した。ホウレンソウは、播種後、発芽の揃ったものを選び、インキュベーター(明期:14時間/暗期:10時間、光強度:約250μE/m2/s)の中で栽培し、28日後にサンプリングした。栽培温度として、低温条件LT(Low Temperature:明期20℃/暗期15℃)と高温条件HT(High Temperature:明期25℃/暗期20℃)の2種類を設定した。なお、ホウレンソウの生育適温範囲は、本試験における低温条件であるが、高温条件においても問題なく生育させることが可能である。
アブラナ科の野菜であるコマツナの、グルタチオンを施用する場合の栽培条件を検討した。コマツナは、播種後、発芽の揃ったものを選び、インキュベーター(明期:14時間/暗期:10時間、光強度:約250μE/m2/s)の中で栽培し、28日後にサンプリングした。栽培温度として、低温条件LT(Low Temperature:明期20℃/暗期15℃)と高温条件HT(High Temperature:明期25℃/暗期20℃)の2種類を設定した。なお、コマツナの生育適温範囲は、本試験における高温条件であるが、低温条件においても問題なく生育させることが可能である。
キク科の野菜であるキクナ(シュンギク)に種々の濃度のグルタチオンを施用する場合の、アミノ酸含量への影響を検証した。キクナは、播種後、発芽の揃ったものを選び、インキュベーター(明期:14時間20℃/暗期:10時間15℃、光強度:約250μE/m2/s)の中で栽培し、28日後にサンプリングした。培地には、下層にバーミキュライト(旭工業)2、中層にクレハ育苗培土(クレハ)1、上層にバーミキュライト(旭工業)1の割合で重層して形成される土壌を用いた。
ナス科野菜であるミニトマト(品種:シャンデリア)に対するグルタチオンの効果を検証した。市販されている苗を購入し、これを実験に用いた。購入後、苗を1/2000a(アール)ポットに植え替え、6週間馴化栽培した。栽培土壌として、下層にバーミキュライト(旭工業)6L、中層にクレハ育苗培土(クレハ)3L、上層にバーミキュライト(旭工業)3Lを重層して形成される土壌を用いた。
単子葉植物(ひがんばな科)であるニラにおけるアミノ酸含量向上効果を検証した。ニラ植物を、セルトレー(128穴)に、種子を3粒/穴の条件にて2011年6月8日に播種し、これらを生育させた後、ポット(1/5000a(アール))に、6本/株の条件にて2011年9月12日に移植した。土壌として、まさ土:パーライト:ピートモスを2:1:1にて混合したものを3L/ポットにて使用した。また、基肥には、固形30号(N-P-K:10-10-10)を4g/ポットにて使用した。ポット上で溶液土耕栽培を行い、追肥として、大塚養液土耕5号(N-P-K:12-20-20)をEC0.6~1.0dS/mに希釈したものを、一日に2~3回、潅水と同時に供した。
[1]アミノ酸含量亢進剤を含有している、植物のアミノ酸含量を高めるための組成物。
[2]上記アミノ酸含量亢進剤がグルタチオンまたはその誘導体である、1の組成物。
[3]上記アミノ酸含量亢進剤が酸化型グルタチオンもしくは還元型グルタチオンまたはこれらのエステル体である、1または2の組成物。
[4]液体、錠剤、散剤または顆粒剤の形態である、1~3の組成物。
[5]窒素源を含有していない、1~4の組成物。
[6]アミノ酸含量が向上した植物を製造するために用いられる、1~5の組成物。
[7]アミノ酸含量亢進剤、またはアミノ酸含量亢進剤を含有している組成物を備えている、植物のアミノ酸含量を高めるためのキット。
[8]植物のアミノ酸含量を高めるための使用手順を記載した指示書を備えている、7のキット。
[9]アミノ酸含量が向上した植物を製造するために用いられる、7または8のキット。
[10]アミノ酸含量亢進剤、またはアミノ酸含量亢進剤を含有している組成物を植物に施用する工程を包含する、植物のアミノ酸含量を高める方法。
[11]アミノ酸含量亢進剤の存在下にて植物を栽培する工程をさらに包含する、10の方法。
[12]0.1mM~5mMの濃度範囲のアミノ酸含量亢進剤を植物に接触させる、11の方法。
[13]植物1個体当たりに施用するアミノ酸含量亢進剤の総量が、12.5mg~300mgの範囲内である、11または12の方法。
[14]土壌1L当たりに施用するアミノ酸含量亢進剤の総量が、60mg~1450mgの範囲内である、11~13の方法。
[15]アミノ酸含量亢進剤を施用した植物におけるアミノ酸含量を測定する工程をさらに包含する、10~14の方法。
[16]アミノ酸含量亢進剤を施用した植物の、目的とする収穫物におけるアミノ酸含量を測定する工程をさらに包含する、10~15の方法。
[17]上記施用する工程が、連続的または間欠的に行われる、10~16の方法。
[18]植物の収穫時期の光条件を制御する工程をさらに包含する、10~17の方法。
[19]植物の栽培時期の温度条件を制御する工程をさらに包含する、10~18の方法。
[20]10~19の方法を用いる、アミノ酸含量が向上した植物を製造する方法。
[21]アミノ酸含量亢進剤の非存在下にて栽培した植物と比較してアミノ酸含量が向上した植物を選択する工程をさらに包含する、20の方法。
[22]アミノ酸含量亢進剤の非存在下にて栽培した植物と比較して、目的とする収穫物におけるアミノ酸含量が向上した植物を選択する工程をさらに包含する、20または21の方法。
[23]アミノ酸含量亢進剤の存在下にて栽培した植物に特徴的な代謝物質生成量プロファイルまたは遺伝子発現量プロファイルを有する植物を選択する工程をさらに包含する、20~22の方法。
[24]植物における代謝物質生成量プロファイルまたは遺伝子発現量プロファイルを取得する工程をさらに包含する、23の方法。
[25]適用対象の植物が陸生植物である、1~24の方法。
[26]適用対象の植物が水生植物である、1~24の方法。
[27]上記水生植物が藻類である、26の方法。
[28]20~27の方法によって製造された、植物。
[29]適用対象の植物が陸生植物である、28の植物。
[30]適用対象の植物が水生植物である、28の植物。
[31]上記水生植物が藻類である、30の方法または植物。
Claims (15)
- アミノ酸含量亢進剤を含有している、植物のアミノ酸含量を高めるための組成物。
- 前記アミノ酸含量亢進剤がグルタチオンまたはその誘導体である、請求項1に記載の組成物。
- 窒素源を含有していない、請求項1または2に記載の組成物。
- 含量が高められるアミノ酸が、GABA,グルタミン酸、βアラニン、アスパラギン酸、アラニン、リジン、スレオニン、ヒドロキシプロリン、ロイシン、セリン、トリプトファン、バリン、チロシン、フェニルアラニン、プロリン、イソロイシン、グリシン、アスパラギン、ヒスチジン、ホモセリン、グルタミンおよびアルギニンからなる群より選択されるアミノ酸の少なくとも1つである、請求項1~3のいずれか一項に記載の組成物。
- アミノ酸含量亢進剤、またはアミノ酸含量亢進剤を含有している組成物を備えている、植物のアミノ酸含量を高めるためのキット。
- 請求項1~4のいずれか一項に記載の組成物または請求項5に記載のキットの、アミノ酸含量が向上した植物を製造するための、使用。
- アミノ酸含量亢進剤、またはアミノ酸含量亢進剤を含有している組成物を植物に施用する工程を包含する、植物のアミノ酸含量を高める方法。
- アミノ酸含量亢進剤の存在下にて植物を栽培する工程をさらに包含する、請求項7に記載の方法。
- アミノ酸含量亢進剤を施用した植物におけるアミノ酸含量を測定する工程をさらに包含する、請求項7または8に記載の方法。
- 植物の収穫時期の光条件を制御する工程をさらに包含する、請求項7~9のいずれか一項に記載の方法。
- 植物の栽培時期の温度条件を制御する工程をさらに包含する、請求項7~10のいずれか一項に記載の方法。
- 請求項7~11のいずれか一項に記載の方法を用いる、アミノ酸含量が向上した植物を製造する方法。
- アミノ酸含量亢進剤の非存在下にて栽培した植物と比較してアミノ酸含量が向上した植物を選択する工程をさらに包含する、請求項12に記載の方法。
- アミノ酸含量亢進剤の存在下にて栽培した植物に特徴的な代謝物質生成量プロファイルまたは遺伝子発現量プロファイルを有する植物を選択する工程をさらに包含する、請求項12または13に記載の方法。
- 請求項12~14のいずれか一項に記載の方法によって製造された、植物。
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JP6998256B2 (ja) | 2018-03-29 | 2022-01-18 | 株式会社カネカ | タマネギ中のケルセチン増量剤およびタマネギの栽培方法 |
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JP2020080682A (ja) * | 2018-11-20 | 2020-06-04 | 岡山県 | 葉物野菜の生産方法 |
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CN103987249A (zh) | 2014-08-13 |
JPWO2013088956A1 (ja) | 2015-04-27 |
TW201328598A (zh) | 2013-07-16 |
CN103987249B (zh) | 2015-10-21 |
KR101703180B1 (ko) | 2017-02-06 |
KR20140107415A (ko) | 2014-09-04 |
JP5967780B2 (ja) | 2016-08-10 |
TWI517790B (zh) | 2016-01-21 |
US9930887B2 (en) | 2018-04-03 |
US20140325712A1 (en) | 2014-10-30 |
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