控制的二氧化可以使植物在没有自毒性的情况下进行化学防御
Jiancai Li1, Rayko Halitschke1, Dapeng Li1
1Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Strasse 8, D-07745 Jena, Germany.
Science (New York, N.Y.)
|January 15, 2021
概括
野生烟草植物通过调节其新陈代谢来避免防御性二烯的自我毒性. 这些专门的代谢物也抑制了草食脂生物合成,提供了重要的植物防御.
科学领域:
- 植物生物化学
- 化学生态学
- 分子生物学
背景情况:
- 植物特种代谢物对于食草动物的防御至关重要,但可以引起自身毒性.
- 植物防御和自毒性的分子机制尚未完全理解.
研究的目的:
- 为了阐明尼古提纳缩菌*中二烯诱导的自毒性和防御的分子机制.
- 研究P450细胞染色体在迪特尔生物合成和调节中的作用.
主要方法:
- 在*Nicotiana attenuata*中抑制P450细胞的基因.
- 对迪特尔衍生物及其对脂生物合成的影响的分析.
- 对食草动物脂代谢的摄入后影响的研究.
主要成果:
- 抑制特定的P450细胞染色体导致自毒性,原因是不受控制的化二烯抑制了脂生物合成.
- 迪特尔通过消化后的氧化抑制草食类脂生物合成以防御作用.
- 代谢调节使烟草植物能够防止自身毒性,并建立有效的草食防御.
结论:
- 特殊代谢物的代谢修饰是平衡植物防御和自我毒性的关键.
- 植物与食草动物的相互作用涉及复杂的分子交叉声,特别是涉及脂代谢.
- 这项研究揭示了二烯在植物生存和草食动物威方面的双重作用.
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