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Scientia Silvae Sinicae ›› 2022, Vol. 58 ›› Issue (4): 110-118.doi: 10.11707/j.1001-7488.20220412

• Research papers • Previous Articles     Next Articles

Effects of Transgenic BtCry1Ac and API gene in Poplar 107 on Diversity and Stability of Arthropod Community

Minxia Ren1,Tan Li2,Ziheng Zhang1,Yuexia Zeng3,Lifeng Wang1,Minsheng Yang1,4,Junxia Liu1,4,*   

  1. 1. College of Forestry, Hebei Agricultural University Baoding 071000
    2. Administrative Examination and Approval Bureau of Xinglong County of Chengde, Hebei Province Chengde 067000
    3. Forestry Research Institute of Hengyang City, Hunan Province Hengyang 421200
    4. Hebei Key Laboratory of Forest Germplasm Resources and Protection Baoding 071000
  • Received:2020-12-17 Online:2022-04-25 Published:2022-07-20
  • Contact: Junxia Liu

Abstract:

Objective: This study aims to investigate the ecological safety of transgenic poplar 107(Populus×euramericana 'Neva'), and to provide scientific basis for further popularization and application. Method: In this study, the composition, structure, diversity and stability of arthropod community in grafted transgenic 107 poplar (Btcry1Ac and API gene) and control 107 poplar were investigated for five consecutive years. Result: A total of 54 091 arthropods belonging to 13 orders were collected, of which, Lepidoptera, Coleoptera, Coleoptera, Diptera, Hymenoptera and Araneae were the main groups. Lepidoptera is dominant in individual number. Compare with the control 107 poplar, the quanity of pest sub-communities in transgenic 107 poplar was significantly lower (P < 0.05). The number of target pests Clostera anachoreta and Hyphantria cunea decreased significantly (P < 0.05). But there was no significant difference (P>0.05) in species and individual number of natural enemies and neutral arthropod community. The natural enemies of Coccinellidae, Araneae and the other neutral insects of Monamorium pharaonis and flies showed increased to a certain degree year by year. There were significant interannual differences in species and individual numbers of transgenic 107 poplar sub-community (P < 0.05). The characteristic index of arthropod community in transgenic 107 poplar forest showed that the diversity and evenness index was higher than that in the control 107 poplar forest, and the dominance index was lower. There were significant interannual differences in the community characteristic index of transgenic 107 poplar forest (P < 0.05). Stability analysis showed that the ratio of total community species to total community individual (Ss/Si), the ratio of herbivorous insects species to herbivorous insects individuals (Sp/Sb), and the ratio of predatory natural enemies individuals to herbivorous insects individuals (Sa/Sb) in transgenic 107 poplar forest were significantly higher than those in the control 107 poplar forest (P < 0.05), indicating that the transgenic 107 poplar had more species and fewer individuals, and the restriction on interspecific number was stronger than that of the control 107 poplar. But the Sn/Sa in transgenic 107 poplar forest and Sn/Sp were not significantly different from the control 107 populus (P>0.05), indicating that the number of predatory natural enemies species and individuals in the transgenic 107 poplar forest were not significantly different from those in the control 107 poplar forest (P>0.05), and the community structure of arthropod in the transgenic 107 poplar forest was relatively stable. Conclusion: Transgenic 107 poplar has a continuous insect resistance, and has no obvious adverse effects on natural enemies and neutral arthropod sub-communities. The transgenic 107 poplar has high ecological safety.

Key words: transgenic 107 poplar, arthropod community, diversity, stability, ecological safety

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