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通过分享和隔离铁,Streptomyces和Mesorhizobium之间建立了基于近距离的防御互惠关系

Xueyuan Du^1,2,3, Ning Liu¹, Bingfa Yan^1,2

¹State Key Laboratory of Microbial Resources, Chinese Academy of Sciences, Institute of Microbiology, Beijing 100101, P. R. China.

The ISME journal

|February 17, 2024

概括

土壤微生物Streptomyces和Mesorhizobium表现出基于近距离的防御互惠主义 (PBDM). 铁竞争和共享推动了这种相互作用,促进了植物生长促进根茎细菌 (PGPR) 的共存.

科学领域:

微生物学微生物学
土壤科学土壤科学
生物化学生化学

背景情况:

土壤微生物形成复杂的相互作用,影响植物生长.
土壤微生物相互作用的机制,特别是在Streptomyces和Mesorhizobium之间,尚未完全理解.
促进植物生长的草原细菌 (PGPR),如Streptomyces和Mesorhizobium在土壤生态系统中发挥着至关重要的作用.

研究的目的:

为了识别和描述Streptomyces和Mesorhizobium之间的新型相互作用.
阐明这些微生物相互作用背后的机制,重点关注铁代谢.
了解这些相互作用如何促进PGPR在土壤环境中的共存.

主要方法:

隔离和共同培养的Streptomyces sp. 这种菌种. FXJ1.4098 和 Mesorhizobium sp. 这两种植物. BAC0120.20. 这是一个很好的例子.
分析代谢物介导相互作用,包括 siderophore 生产和铁的吸收.
研究涉及其他微生物竞争对手的三元相互作用.
扩大规模的查,以评估发现的相互作用的流行程度.

主要成果:

在Streptomyces和Mesorhizobium之间发现了基于近距离的防御互惠主义 (PBDM).
证明PBDM是由铁竞争 (desferrioxamine) 和共享 (铁 - 氨酸复合物) 驱动的.
证据表明PBDM可以保护Mesorhizobium免受竞争对手的影响,从而促进PGPR的共存.
这表明PBDM可能是Mesorhizobium和红土衍生的Streptomyces之间的常见相互作用.

结论:

铁的可用性和竞争是中介复杂的土壤微生物相互作用的关键因素.
基于近距离的防御互惠主义是一种新的机制,有助于植物生长促进根茎细菌的稳定性和共存.
这项研究为Streptomyces和Mesorhizobium在土壤生态系统中的生态作用提供了新的见解.

关键词:

梅索里索是二氧化的一种物质.这种病名为Streptomyces.互动互动互动互动互动.铁是铁,铁是铁,铁是铁.铁 - 氨酸 - 铁 - 氨酸基于近距离的防御互惠主义.在 siderophore 的位置上.

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