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Effects of straw leachates from Cry1C-expressing transgenic rice on the development and reproduction of Daphnia magna

机译:表达Cry1C的转基因水稻秸秆浸出液对大型水蚤发育和繁殖的影响

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摘要

The transgenic rice line T1C-19 provides high resistance to lepidopteran pests because of the synthesis of the Bacillus thuringiensis (Bt) insecticidal protein Cry1C. It thus shows good prospect for commercial planting in China. Species of Cladocera, an order of aquatic arthropods commonly found in aquatic ecosystems such as rice paddies, might be exposed to the insecticidal protein released from Bt-transgenic rice-straw residues. For the study reported herein, we used Daphnia magna (water flea) as a representative of Cladocera to evaluate whether aquatic arthropods are adversely affected when exposed to Bt rice-straw leachates. We exposed D. magna to M4 medium containing various volume percentages of medium that had been incubated with TIC -19 rice straw or rice straw from its non-transformed near-isoline Minghui 63 (MH63) for 21 days. Compared with pure M4 medium (control), the fitness and developmental and reproduction parameters of D. magna decreased significantly when exposed to rice-straw leachates; conversely, no significant differences between the T1C-19 and MH63 rice-straw leachate treatments were observed, indicating that the Bt rice straw leachate did not adversely affect this non-target species.
机译:转基因水稻品系T1C-19由于对苏云金芽孢杆菌(Bt)杀虫蛋白Cry1C的合成而对鳞翅目害虫具有较高的抗性。因此,它显示出在中国商业化种植的良好前景。 Cladocera物种是常见于水生生态系统(如稻田)中的一种水生节肢动物,可能会暴露于从Bt转基因稻草残渣中释放的杀虫蛋白。对于本文报道的研究,我们以水蚤(Daphnia magna)(水蚤)为代表,评估了暴露于Bt稻草浸出液中的水生节肢动物是否受到不利影响。我们将D. magna暴露于M4培养基中,该培养基中含有不同体积百分比的培养基,该培养基已与TIC -19稻草或未转化的近等位基因Minghui 63(MH63)的稻草孵育了21天。与纯M4培养基(对照)相比,暴露于稻草浸出液中的D. magna的适应性,发育和繁殖参数显着降低。相反,在T1C-19和MH63稻草浸出液处理之间未观察到显着差异,这表明Bt稻草浸出液不会对该非目标物种产生不利影响。

著录项

  • 来源
    《Ecotoxicology and Environmental Safety》 |2018年第12期|630-636|共7页
  • 作者单位

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China;

    Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bt protein; Environmental risk assessment; Non-target effects; Daphnia magna; Chronic toxicity; Catalase;

    机译:Bt蛋白;环境风险评估;非目标效应;大型蚤;慢性毒性;过氧化氢酶;

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