阿拉比多普西斯的根防御障碍支持与菌Pseudomonas simiae WCS417的有益相互作用
Jiayu Zhou1,2, Melissa Uribe Acosta1, Max J J Stassen1
1Plant-Microbe Interactions, Department of Biology, Science4Life, Utrecht University, P.O. Box 800.56, 3508 TB, Utrecht, the Netherlands.
The New phytologist
|September 4, 2025
概括
植物根的防御障碍形成了有益的微生物相互作用. 特定的障碍物影响植物生长促进和根植殖由Pseudomonas simiae WCS417,影响植物-微生物通信.
科学领域:
- 植物与微生物的相互作用
- 植物免疫力
- 根生理学
背景情况:
- 植物的根含有多种微生物,包括病原体和有益的微生物.
- 根系防御障碍对病原体耐药性至关重要,但它们在有益关联中的作用较少被理解.
研究的目的:
- 调查Arabidopsis thaliana根防御障碍对有益的促进植物生长的草原菌Pseudomonas simiae WCS417的影响.
- 了解结构和化学防御障碍如何影响植物和微生物之间的交流和植物的反应.
主要方法:
- 使用了15种具有结构性 (皮质素,素,素) 和化学性 (素,葡萄糖酸盐) 防御障碍的变种.
- 分析了WCS417的殖民和植物生长促进.
- 对细菌和植物进行了转录基因分析.
- 对细菌运动性和化学反应进行了体外研究.
主要成果:
- 特定的根防御障碍显著影响了WCS417介导的植物生长促进和根殖民.
- 阿拉比多普西斯根排泄物对WCS417转录组进行了差异调节,卡马莱克辛影响了细菌的移动性和化学反应.
- 突变植物中WCS417诱导的转录组变化与野生类型不同,影响了生长和防御途径.
- 在防御屏障突变体中观察到改变的反应性氧物种活性.
结论:
- 根系防御障碍在调节有益的植物微生物相互作用方面起着至关重要的作用.
- 这些屏障有助于平衡植物生长和防御,影响互助微生物的建立和有效性.
- 这些发现将根防御障碍的已知功能扩展到疾病抵抗之外,包括有益关联的调节.
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