绿叶的挥发性感官转导在阿拉比多普西斯
Yuri Aratani1, Takuya Uemura1, Takuma Hagihara1
1Department of Biochemistry and Molecular Biology, Saitama University, Saitama, 338-8570, Japan.
Nature communications
|October 17, 2023
概括
植物使用被称为挥发性有机化合物 (VOC) 的空气信号来检测邻居的损伤. 这项研究表明,特定的VOC迅速增加卫细胞中的,启动植物防御反应.
科学领域:
- 植物生物学 植物生物学
- 植物生理学 植物生理学
- 化学生态化学生态学
背景情况:
- 植物在受损时使用挥发性有机化合物 (VOC) 进行通信.
- 通过VOCs进行植物间的通信会触发植物的防御机制.
- 植物中VOC传感转导的精确机制和时间尚未完全理解.
研究的目的:
- 为了研究信号传递的时空动态,以响应Arabidopsis中的VOCs.
- 为了识别涉及植物防御信号的特定VOC.
- 阐明离子和胃在VOC感知中的作用.
主要方法:
- 实时广场成像Arabidopsis叶中的细胞质度 ([Ca2+]cyt).
- 植物暴露于机械或食草动物损害的植物的VOC.
- 使用气色谱-质谱法识别特定的绿叶挥发物 (GLVs).
- 组织特异性成像和对口腔突变的分析.
主要成果:
- 暴露于受损植物的VOC引起了Arabidopsis叶中的[Ca2+]cyt的增加.
- 两个GLVs, (Z) -3-hexenal (Z-3-HAL) 和 (E) -2-hexenal (E-2-HAL),被确定为[Ca2+]细胞增加的触发者.
- 这些GLVs以依赖的方式启动了应激反应基因的表达.
- Z-3-HAL引起了护卫细胞的立即[Ca2+]细胞增加,随后是美索菲尔细胞,这表明口腔吸收.
结论:
- 绿叶挥发物 (GLV) 作为植物感知到的空气信号.
- 信号传递在植物对GLVs的反应中起着至关重要的作用.
- 胃口吸收促进了快速的GLV感知和在Arabidopsis中启动防御反应.
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