葡萄糖酸盐代谢物是阿拉比多普西斯天生的免疫反应所需的
Nicole K Clay1, Adewale M Adio, Carine Denoux
1Department of Genetics, Harvard Medical School, Massachusetts General Hospital, Boston, MA 02114, USA.
Science (New York, N.Y.)
|December 20, 2008
概括
植物对病原体的防御包括质沉积和乙烯信号. 以前已知的草食防御化合物对植物对微生物的免疫力也至关重要.
科学领域:
- 植物免疫力 植物免疫力
- 植物与微生物的相互作用
- 植物生物化学 植物生物化学
背景情况:
- 植物对与微生物相关的分子模式的感知触发了基底防御,类似于动物的天生的免疫力.
- 病原体接触的细胞壁部位上的质沉积是这种防御的关键特征.
- 乙烯信号传递和代谢物4-甲基-英多-3-甲基葡萄糖酸盐都与植物病原体的反应有关.
研究的目的:
- 研究乙烯和特定葡萄糖酸盐在植物防御微生物病原体中的作用.
- 阐明PEN2和PEN3基因在病原体攻击期间的质沉积和葡萄糖酸盐激活中的功能.
- 为了确定已知的植物代谢物是否也参与微生物防御.
主要方法:
- 利用阿拉比多普西斯突变物用于转录和代谢分析.
- 监控的病原体触发的质沉积.
- 分析了PEN2和PEN3基因对于植物抗性和防御反应的必要性.
主要成果:
- 乙烯和4- methoxy-indol-3-ylmethylglucosinolate 在植物病原体反应中起着重要的作用.
- PEN2和PEN3基因对于病原体耐药性,质沉积和葡萄糖酸盐激活至关重要.
- 以前与草食动物防御相关的植物代谢物也需要有效防御微生物病原体.
结论:
- 病原体触发的素反应是植物对微生物病原体的抗性不可或缺的组成部分.
- 植物的二次代谢物,包括那些参与草食动物防御的代谢物,有助于广泛的免疫.
- 这项研究强调了某些代谢物在植物-食草动物和植物-微生物防御系统中的保留作用.
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