两种细菌花和一种花病原体之间的物种间相互作用减少了疾病发生率并改变了病原体的活动
M Amine Hassani1, Zhouqi Cui1, Jacquelyn LaReau2
1Department of Plant Pathology and Ecology, The Connecticut Agricultural Experiment Station, New Haven, Connecticut, USA.
mBio
|February 20, 2024
概括
有益的果花细菌,Pseudomonas和Pantoea,通过改变病原体基因表达和pH,而不是通过竞争性排斥来减少火灾病. 这些新出现的特性突出显示了植物健康中的复杂微生物相互作用.
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
- 细菌相互作用 细菌相互作用
背景情况:
- 鲜花是各种微生物的宿主,影响植物健康和病原体相互作用.
- 埃尔维尼亚amyylovora (E. amylovora) 导致果 (Malus × domestica) 中的火灾.
- 之前的研究表明,鲜花共生植物通过对抗性来降低E. amylovora.
研究的目的:
- 研究两种果花细菌 (Pseudomonas,Pantoea) 和E. amylovora.之间的生态相互作用.
- 了解这些相互作用如何影响病原体行为和植物健康.
- 探索由多方微生物共同培养产生的新兴性质.
主要方法:
- 实地实验和Pseudomonas,Pantoea和E. amylovora的体外共同培养.
- 细菌在污名和合成介质上共存的分析.
- 在三元共同培养中基因表达概况.
- 测量生长环境中的pH值变化.
主要成果:
- 交叉体细菌和E. amylovora在果花的印上和体外共存,这表明没有竞争性排斥.
- 三级共同培养在所有三种细菌物种中显著改变了基因表达,显示出新兴的功能.
- 同注射导致生长媒介的较强酸化,这是一个新出现的属性.
结论:
- 对E. amylovora的植物保护可能涉及超出竞争性利基排除的机制.
- 在多方微生物群落中的物种间相互作用产生新兴性质.
- 这些新兴的特性显著影响植物健康和病原体的行为在植物的全生物体.
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