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Field evaluation of insect-resistant transgenic Populus nigra trees

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Abstract

The performance of insect-resistant transgenic poplar trees (Populusnigra) expressing a Cry1Ac gene from Bacillus thuringiensis subsp. Kurstaki HD-1 against poplar defoliators was evaluated in the field at the Manas Forest Station in Xinjiang Uygur Autonomous Region during1994–1997. The results showed that the average percentage of highly damaged leaves on the transgenic trees was 10% while that on the control trees in nearby plantations reached 80–90%. The average number of pupae per m2 of soil at 20cm depth in transgenic poplar plantation was 18 which was only 20% of that found in the non-transgenic control field. The number of pupae and the leaf-damage on transgenic trees described above are all far below the threshold set for chemical protection measures. The non-transformed poplar trees grown in the same plantation with the transgenic trees were also protected indicating that cross protection occurred between these two kinds of trees. Insect-resistant transgenic poplar trees have a potential application value in afforestation.

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Authors and Affiliations

  1. Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, P.R. China

    J.J. Hu, Y.F. Han & L. Li

  2. Institute of Microbiology, Chinese Academy of Science, Beijing, 100080, P.R. China

    Y.C. Tian

  3. Manas Forest Station, Xinjiang Uygur Autonomous Region, 832206, P.R. China

    B.E. Zhang

Authors
  1. J.J. Hu
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  2. Y.C. Tian
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  3. Y.F. Han
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  4. L. Li
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  5. B.E. Zhang
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Hu, J., Tian, Y., Han, Y. et al. Field evaluation of insect-resistant transgenic Populus nigra trees. Euphytica 121, 123–127 (2001). https://doi.org/10.1023/A:1012015709363

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  • DOI: https://doi.org/10.1023/A:1012015709363

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