基石 在小麦植物圈微生物群中的 Pseudomonas 种类通过改变宿主 pH 来减轻 Fusarium 头部疾病
Yujiao Xu1, Zhiyuan Wang1, Jinmei Wu1
1State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing 211800, China.
Cell host & microbe
|November 20, 2025
概括
有益的植物界微生物,特别是 Pseudomonas,可以通过产生有机酸来控制小麦 Fusarium 头部病 (FHB). 这些微生物抵消了病原体引起的pH值变化,为管理这种破坏性小麦疾病提供了一种可持续的方法.
科学领域:
- 植物病理学 植物病理学
- 微生物学 微生物学
- 农业科学 农业科学
背景情况:
- 植物界微生物群对于植物健康至关重要.
- 在病原体感染期间,植物圈微生物组动态的作用在很大程度上是未知的.
- 虫头部炎 (Fusarium head blight,FHB) 是一种严重的小麦疾病,由虫虫 (Fusarium graminearum) 引起,虫虫通过增加宿主植物头部pH来繁殖.
研究的目的:
- 为了研究花球微生物组变化的影响小麦在Fusarium graminearum感染期间小麦.
- 确定用于减轻FHB的微生物机制.
- 探索特定微生物的潜力,以实现可持续的FHB控制.
主要方法:
- 采用了小麦头微生物社区概况和元转录组学.
- 从受感染的小麦头中分离和描述细菌菌株,重点是Pseudomonas物种.
- 试验室测试评估细菌分离物产生有机酸和抵消pH变化的能力.
- 实地试验,以评估在控制FHB时所选细菌菌株的疗效.
主要成果:
- 发现植物界微生物,特别是Pseudomonas物种,可以减轻FHB.
- 鉴定出了特定的 Pseudomonas 隔离物,它们产生有机酸以抵消由 Fusarium graminearum 诱导的化.
- 证实了在小麦头上选择性地促进这些酸性化Pseudomonas菌株.
- 实地试验表明,这些宿主酸性 Pseudomonas 菌株可以有效控制 FHB.
结论:
- 生物圈微生物在调节植物头部的pH值和控制FHB方面发挥着重要作用.
- 宿主酸化的Pseudomonas菌株代表了在小麦中可持续FHB管理的有希望的途径.
- 了解植物微生物相互作用为作物疾病控制提供了创新的策略.
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