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阿斯伯吉路斯cvjetkovicii通过在植物界的物种间化学信号来保护植物病原体

Xiaoyan Fan^1,2,3,4,5, Haruna Matsumoto^1,2,3, Haorong Xu^1,2,3

¹College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China.

Nature microbiology

|August 5, 2024

概括

居民的叶子微生物使用小分子来保护植物. 阿斯伯吉卢斯cvjetkovicii产生2,4-Di-tert-butylphenol (2,4-DTBP),它可以保护像大米这样的作物免受诸如Rhizoctonia solani.这样的病原体的影响.

科学领域:

植物病理学植物病理学
微生物生态学微生物生态学
化学生态化学生态学

背景情况:

居民微生物群对植物叶子化学有影响.
微生物群在植物病原体防御中的信号作用尚不清楚.
植物病原体对作物生产构成重大威胁.

研究的目的:

为了研究阿斯伯吉勒斯cvjetkovicii在米叶微生物群中的作用.
为了识别参与微生物之间的物种间信号传递的小分子.
评估微生物信号分子在作物保护中的潜力.

主要方法:

标识由阿斯伯吉勒斯cvjetkovicii.产生的信号分子.
评估 2,4-Di-tert-butylphenol (2,4-DTBP) 对 Rhizoctonia solani 病原性的影响.
实地实验评估了A. cvjetkovicii和2,4-DTBP在各种作物上的外部应用.
测试 2,4-DTBP 活性与其他大米植物病原体.

主要成果:

阿斯珀吉勒斯cvjetkovicii通过小分子信号来颠覆Rhizoctonia solani感染.
2,4-Di-tert-butylphenol (2,4-DTBP) 通过抑制R. solani.中的bZIP激活的AMT1转录来中和反应性氧物种依赖的病原性.
外源应用的A.cvjetkovicii和2,4-DTBP显著降低了在米中的R.solani疾病指数 (19.7-32.2%对比67.2-82.6%在控制中).
2,4-DTBP在黄瓜,玉米,大豆和西红中对R. solani表现出保护作用,对Fusarium fujikuroi表现出活性.

结论:

植物界中对植物病原体的防御策略包括微生物群驱动的病原性中和.
2,4-DTBP是一种关键的信号分子,具有广泛的抗植物病原体活性.
共生微生物群及其代谢物代表着可持续作物保护的有希望的途径.

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