转录因子WOX11通过偶然的横向根形成来调节对囊线虫的耐受性
Jaap-Jan Willig1, Nina Guarneri1, Thomas van Loon1
1Laboratory of Nematology, Wageningen University & Research, Wageningen 6708 PB, The Netherlands.
Plant physiology
|February 8, 2024
概括
转录因子WOX11 (WUSCHEL-RELATED HOMEOBOX 11) 在被线虫感染的Arabidopsis植物中促进偶然的根形成. 这种反应有助于植物通过改善根系和整体生长来耐受线虫感染.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 植物病原体相互作用
背景情况:
- 在Arabidopsis thaliana中的转录因子WUSCHEL-RELATED HOMEOBOX 11 (WOX11) 在机械损伤后启动偶然的横向根形成.
- 侵入根系的线虫会导致根部过度分枝,但WOX11在这个过程中的作用及其对植物的益处尚不清楚.
研究的目的:
- 为了调查甜菜囊线虫 Heterodera schachtii 是否激活WOX11介导的偶然横向植根.
- 通过评估其对根生长和整体发育的影响,确定这种线虫诱导的植根是否有利于植物.
主要方法:
- 在Arabidopsis thaliana中进行了针对性的转录抑制和记者基因分析.
- 在线虫感染下对根系组件和地面植物生长的分析.
主要成果:
- Heterodera schachtii激活了由WOX11介导的从感染部位附近的初级根源中的偶然横向植根.
- WOX11的激活是通过ETHYLENE RESPONSE FACTOR109.9向下游的素酸信号.
- 通过WOX11介导的偶然根植补偿了线虫诱导的初级根生长抑制,并减少了对地面生长的负面影响.
结论:
- WOX11在调节根系可塑性方面发挥着至关重要的作用,以应对囊线虫带来的生物压力.
- 通过WOX11介导的偶然根植是促进Arabidopsis对囊线虫感染耐受性的关键机制.
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