Abstract
Alternaria blight on araliaceous plants is a common disease caused by Alternaria panax Whetzel and occurs worldwide. Genetic diversity among 58 isolates of A. panax from different araliaceous hosts in Korea was determined by amplified fragment length polymorphism (AFLP) analysis. Selected isolates from genetic groups (determined by AFLP analysis) were examined based on the results of phylogenetic analyses of eight genes (Alt a1, BT1, BT2, EF-1α, gpd, H3, ITS, and RPB2), morphological characteristics, and pathogenicity tests. Isolates were divided into two distinct genetic groups (A and B) by AFLP analysis and based on the results of sequence analyses of the BT1, BT2, gpd, and RPB2 genes. Isolates from ginseng plants (Panax ginseng and P. quinquefolius) fell into group B, whereas isolates from the other araliaceous plants clustered in group A. Morphologically, although some overlap was observed among isolates in the two groups, isolates in group B had longer and narrower conidia, distinct sporulation patterns at 15 °C, and did not secrete pigment into PDA media. Pathogenicity tests revealed that isolates in groups A and B only induced severe disease symptoms on leaves of their hosts, such as isolates in group A on Aralia elata, Aralia continentalis, and in group B on Panax ginseng. The results indicate that the two genetic groups of Alternaria from araliaceous plants should be considered as two different species, and we propose that group A is a candidate of new Alternaria species distinguished from A. panax.
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References
Andersen B, Thrane U (1996) Differentiation of Alternaria infectoria and Alternaria alternata based on morphology, metabolite profiles, and cultural characteristics. Can J Microbiol 42:685–689
Andersen B, KrØger E, Roberts RG (2001) Chemical and morphological segregation of Alternaria alternata, A. gaisen and A. longipes species-groups. Mycol Res 105:291–299
Andersen B, KrØger E, Roberts RG (2002) Chemical and morphological segregation of Alternaria arboresens, A. infectoria and A. tenuissima species-groups. Mycol Res 106:170–182
Andersen B, Dongo A, Pryor BM (2008) Secondary metabolite profiling of Alternaria dauci, A. porri, A. solani, and A. tomatophila. Mycol Res 112:241–250
Andersen B, Sorensen JL, Nielsen KF, Gerrits van den Ende B, de Hoog GS (2009) A polyphasic approach to the taxonomy of the Alternaria infectoria species-group. Fungal Genet Biol 46:642–656
Aradhya MK, Chan HM, Parfitt DE (2001) Genetic variability in the pistachio late blight fungus, Alternaria alternata. Mycol Res 105:300–306
Atilano RA (1983) Alternaria leaf spot of Schefflera arboricola. Plant Dis 67:64–66
Aveskamp MM, Verkley GJM, de Gruyter J, Murace MA, Perelló A, Woudenberg JHC, Groenewald JZ, Crous PW (2009) DNA phylogeny reveals polyphyly of Phoma section Peyronellaea and multiple taxonomic novelties. Mycologia 101:363–382
Barnes I, Crous PW, Wingfield BD, Wingfield MJ (2004) Multigene phylogenies reveal that red band needle blight of Pinus is caused by two distinct species of Dothistroma, D. septosporum and D. pini. Stud Mycol 50:551–565
Berbee ML, Pirseyedi M, Hubbard S (1999) Cochliobolus phylogenetics and the origin of known, highly virulent pathogens, inferred from ITS and glyceraldehydes-3-phosphate dehydrogenase gene sequences. Mycologia 91:964–977
Bock CH, Thrall PH, Brubaker CL, Burdon JJ (2002) Detection of genetic variation in Alternaria brassicicola using AFLP fingerprinting. Mycol Res 106:428–434
Bruns TD, Vilgalys R, Barns SM, Gonzales D, Hibbet DS, Lane DJ, Simon L, Stickel S, Szaro TM, Weisberg WG, Sogin ML (1992) Evolutionary relationships within the fungi: analyses of nuclear small subunit rRNA sequences. Mol Phylogenet Evol 1:231–241
Camara MPS, Palm ME, van Berkum P, O’Neill NR (2002) Molecular phylogeny of Leptosphaeria and Phaeosphaeria. Mycologia 94:630–640
Carbone I, Anderson JB, Kohn LM (1999) Patterns of descent in clonal lineages and their multilocus finger prints are resolved with combined gene genealogies. Evolution 53:11–21
Chen YJ, Wang Y, Feng GQ, Liu YZ (2005) Biological characteristics of Alternaria panax Whetzel isolated from Panax notoginseng. ACTA Phytopathologica Sinica 35:267–269
Chun J (1995) Computer-assisted classification and identification of Actinomycetes. Dissertation, Unversity of Newcastle
Dearness J, House HD (1940) New or noteworthy species of fungi. V. Circ. New York State Museum 24:25-60
Forsberg LI (1983) New Disease: Alternaria panax on Umbrella tree. Australas Plant Pathol 12:7
Gannibal PB, Klemsdal SS, Levitin MM (2007) AFLP analysis of Russian Alternaria tenussima populations from wheat kernels and other hosts. Eur J Plant Pathol 119:175–182
Garibaldi A, Gilardi G, Gullino ML (2004) First Report of Alternaria leaf blight of Aralia japonica caused by Alternaria panax in Europe. Plant Dis 88:82
Gherbawy YAMH (2005) Genetic variation among isolates of Altenraria spp. from select Egyptian crops. Arch Phytopathol Plant Protect 38:77–89
Glass NL, Donaldson GC (1995) Development of primer sets designed for use with the PCR to amplify conserved genes from filamentous ascomycetes. Appl Environ Microbiol 61:1323–1330
Greene HC (1953) Notes on Wisconsin parasitic fungi. XVIII. Wis Acad Sci Art Lett 42:69–81
Hong SG, Cramer RA, Lawrence CB, Pryor BM (2005) Alt a 1 allergen homologs from Alternaria and related taxa: analysis of phylogenetic content and secondary structure. Fungal Genet and Biol 42:119–129
Hong SG, Maccaroni M, Figuli PJ, Pryor BM, Belisario A (2006) Polyphasic classification of Alternaria isolated from hazelnut and walnut fruit in Europe. Mycol Res 110:1290–1300
Kang JC, Crous PW, Mchau GRA, Serdani M, Song SM (2002) Phylogenetic analysis of Alternaria spp. associated with apple core rot and citrus black rot in South Africa. Mycol Res 106:1151–1162
Kim YC, Lee JH, Bae YS, Sohn BK, Park SK (2010) Development of effective environmentally-friendly approaches to control Alternaria blight and anthracnose diseases of Korean ginseng. Eur J Plant Pathol 127:443–450
Kumar V, Haldar S, Pandey KK, Singh RP, Singh AK, Singh PC (2008) Cultural, morphological, pathogenic and molecular variability amongst tomato isolates of Alternaria solani in India. World J Microbiol Biotechnol 24:1003–1009
Kusaba M, Tsuge T (1994) Nuclear ribosomal RNA variation and pathogenic specialization in Alternaria fungi known to produce host-specific toxins. Appl Environ Microbiol 60:3055–3062
Kusaba M, Tsuge T (1995) Phylogeny of Alternaria fungi known to produce host-specific toxins on the basis of variation in internal transcribed spacers of ribosomal DNA. Curr Genet 28:491–498
Leahy RM (1986) Alternaria leaf blight of Brassaia and related hosts. Plant Pathology Circular No. 283, Florida Department of Agriculture and Consumer Services, Division of Plant Industry
Levy E, Elkind G, Ben-Ze’ev IS (2006) First report in israel of Aralia leaf spot caused by Alternaria panax. Phytoparasitica 34:269–271
Liu YJ, Whelen S, Hall BD (1999) Phylogenetic relationships among ascomycetes: evidence from an RNA Polymerse II Subunit. Mol Biol Evol 16:1799–1808
Lourenço V Jr, Moya A, González-Candelas F, Carbone I, Maffia LA, Mizubuti ESG (2009) Molecular diversity and evolutionary processes of Alternaria solani in Brazil inferred using genealogical and coalescent approaches. Phytopathology 99:765–774
Lourenço V Jr, Rodrigues TTMS, Campos AMD, Bragança CAD, Scheuermann KK, Reis A, Brommonschenkel SH, Maffia LA, Mizubuti ESG (2011) Genetic structure of the population of Alternaria solani in Brazil. Phytopathology 159:233–240
Martinez SP, Snowdon R, Pons-Kuhnemann J (2004) Variability of Cuban and international populations of Alternaria solani from different hosts and localities: AFLP genetic analysis. Eur J Plant Pathol 110:399–409
McKay GJ, Brown AE, Bjourson AJ, Mercer P (1999) Molecular characterization of Alternaria linicola and its detection in linseed. Eur J Plant Pathol 105:157–166
Miller HN (1957). An Alternaria leaf spot of Schefflera actinophylla. Phytopathology 47:529
Miller MA, Pfeiffer W, Schwartz T (2010) Creating the CIPRES Science Gateway for inference of large phylogenetic trees. In: Proceedings of the Gateway Computing Environments Workshop (GCE), New Orleans, pp 1–8
Park MS, Seo GS, Bae KS, Yu SH (2005) Characterization of Trichoderma spp. associated with green mold oyster mushroom by PCR-RFLP and sequence analysis of ITS regions of rDNA. Plant Pathol J 21:229–236
Park MS, Romanoski CE, Pryor BM (2008) A re-examination of the phylogenetic relationship between the causal agents of carrot black rot, Alternaria radicina and A. carotiincultae. Mycologia 100:511–527
Parke JL, Shotwell KM (1989) Diseases of cultivated ginseng. Univ Wisconsin Madison Coll Agric Life Sci Res Div Res Bull A3465:16
Peever TL, Ibanez A, Akimitsu K, Timmer LW (2002) Worldwide phylogeography of the citrus brown spot pathogen, Alternaria alternata. Phytopathology 92:794–802
Peever TL, Su J, Carpenter-Boggs L, Timmer LW (2004) Molecular systematics of citrus-associated Alternaria species. Mycologia 96:119–134
Peterson SW (2008) Phylogenetic analysis of Aspergillus species using DNA sequences from four loci. Mycologia 100:205–226
Proctor JTA, Baily WG (1987) Ginseng: industry, botany and culture. Hortic Rev 9:187–236
Pryor BM, Bigelow DM (2003) Molecular characterization of Embllisia and Nimbya species and their relationship to Altenraria, Ulocladium and Stemphylium. Mycologia 95:1141–1154
Pryor BM, Gilbertson RL (2002) Relationships and taxonomic status of Alternaria radicina, A. carotiincultae, and A. petroselini based upon morphological, biochemical, and molecular characteristics. Mycologia 94:49–61
Pryor BM, Michailides TJ (2002) Morphological, pathogenic, and molecular characterization of Alternaria isolates associated with Alternaria late blight of pistachio. Phytopathology 92:407–416
Putnam ML, du Toit LJ (2003) First report of alternaria blight caused by Alternaria panax on ginseng (Panax quinquefolius) in Oregon and Washington, USA. Plant Pathol 52:406
Quayyum HA, Gijzen M, Traquair JA (2003) Purification of a necrosis-inducing, hostspecific protein toxin from spore germination fluid of Alternaria panax. Phytopathology 93:323–328
Quayyum HA, Dobinson KF, Traquair JA (2005) Conidial morphology, virulence, molecular characterisation, and host-parasite interactions of selected Alternaria panax isolates on American ginseng. Can J Bot 83:1133–1143
Roberts RG, Reymond ST, Andersen B (2000) RAPD fragment pattern analysis and morphological segregation of small-spored Alternaria species and species groups. Mycol Res 104:151–160
Simmons EG (1982) Alternaria: Themes and Variations (7–10). Mycotaxon 14:17–43
Simmons EG (1992) Alternaria taxonomy: Current status, viewpoint, challenge. In: Chelkowski J, Visconti A (eds) Alternaria biology, plant diseases and metabolites. Elsevier, Amsterdam, pp 1–36
Simmons EG (2007) ALTERNARIA: an identification manual. CBS Fungal Biodiversity Centre Utrecht, the Netherlands, pp 38–41
Stamatakis A (2006) RAxML-VI-HPC: maximum likelihood-based phylogenetic analyses with thousands of taxa and mixed models. Bioinformatics 22:2688–2690
Stamatakis A, Hoover P, Rougemont J (2008) A rapid bootstrap algorithm for the RAxML web servers. Syst Biol 57:758–771
Tamura K, Peterson D, Peterson N, Stecher G, Nei M, Kumar S (2011) MEGA5: molecular evolutionary genetics analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods. Mol Biol Evol 28:2731–2739
Uchida JY, Aragaki M, Yoshimura MA (1984) Alternaria leaf spots of Brassaia actinophylla, Dizygotheca elegantissima, and Tupidanthus calyptratus. Plant Dis 68:447–449
Van der Merwe NA, Gryzenhout M, Steenkamp ET, Wingfield BD, Wingfield MJ (2010) Multigene phylogenetic and population differentiation data confirm the existence of a cryptic species within Chrysoporthe cubensis. Fungal Biol 114:966–979
Van der Waals JE, Korsten L, Slippers B (2004) Genetic diversity among Alternaria solani isolates from potatoes in South Africa. Plant Dis 88:959–964
Vos P, Rogers R, Bleeker M, Reijans M, van de Lee T, Hornes M, Frijters A, Pot J, Peleman J, Kuiper M, Zabeau M (1995) AFLP: a new technique for DNA fingerprinting. Nucleic Acids Res 23:4407–4414
Whetzel HH, Rosenbaum J (1912) The diseases of ginseng and their control. U. S. Dept Agric, Bur Plant Ind, Bulletin No. 250, pp 44
White TJ, Bruns T, Lee S, Taylor JW (1990) Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. In: Innis MA, Gelfand DH, Sninsky JJ, White TJ (eds) PCR protocols: a guide to methods and applications. New York, pp 253–288
Woodhall J, Sansford C (2006) CSL Pest risk analysis for Alternaria panax. Summary pest risk analysis for PHSI interceptions. CSL Sand Hutton, UK
Yu SH (2001) Korean Species of Alternaria and Stemphylium. National Institute of Agricultural Science and Technology, Suwon, pp 100–106
Yu SH, Syoyo N, Takayuki H (1984) Morphology and Pathogenicity of Alternaria panax isolated from Panax schiseng in Japan and Korea. Ann Phytopath Soc Japan 50:313–321
Yu SH, Yun HK, Kim WG, Lee HY, Lee EJ (1992) Alternaria leaf spot of Arlia cordata caused by Alternaria panax. Korean J Plant Pathol 8:81–84
Yu SH, Cho HS, Kim BR, Park MS (2003) Morphological and molecular characterization of Alternaria isolates from Solanaceous crops. Korean J Mycol 31:103–113
Zaccardelli M, Balmas V, Altomare C, Corazza L, Scotti C (2006) Characterization of Italian isolates of Fusarium semitectum from Alfalfa (Medicago sativa L.) by AFLP analysis, morphology, pathogenicity and toxin production. J Phytophathology 154:454–460
Zhang TY (2003) Flora Fungorum Sinicorum, Alternaria, vol. 16, 1st edn. Beijing, China, pp 55–61
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This study was supported by a grant from Regional Subgenebank Support Program of the Rural Development Administration (RDA), Republic of Korea.
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Deng, J.X., Paul, N.C., Park, M.S. et al. Molecular characterization, morphology, and pathogenicity of Alternaria panax from araliaceous plants in Korea. Mycol Progress 12, 383–396 (2013). https://doi.org/10.1007/s11557-012-0844-8
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DOI: https://doi.org/10.1007/s11557-012-0844-8