Deciphering bacterial mechanisms of root colonization.
Deciphering bacterial mechanisms of root colonization.
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破译根部定植的细菌机制。
DOI：
10.1111/1758-2229.12934
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发表时间：
2021-08
影响因子：
3.3
通讯作者：
Poole PS
中科院分区：
文献类型：
--
作者：
Knights HE;Jorrin B;Haskett TL;Poole PS
根际细菌定植对于植物与细菌相互作用的建立至关重要，而植物与细菌相互作用是植物健康和生产力的关键决定因素。植物主要通过调节根部分泌物的成分和产生先天免疫反应来影响细菌定植。结果是细菌从周围土壤中水平过滤，导致细菌多样性梯度下降，同时细菌向根部的专业化程度更高。细菌与细菌的相互作用（BBI）在根际也很普遍，通过代谢交换、抗菌化合物的分泌和其他过程影响细菌的持久性和根部定植。传统上，细菌定植是在无菌实验室条件下进行的，以减轻 BBI 的影响。使用简化的合成细菌群落结合微流体成像平台和转座子诱变筛选方法，我们现在能够开始揭示根定植早期阶段发挥作用的分子机制。这篇综述探讨了有关细菌根定植的知识现状，并确定了未来探索的关键工具。
Bacterial colonization of the rhizosphere is critical for the establishment of plant–bacteria interactions that represent a key determinant of plant health and productivity. Plants influence bacterial colonization primarily through modulating the composition of their root exudates and mounting an innate immune response. The outcome is a horizontal filtering of bacteria from the surrounding soil, resulting in a gradient of reduced bacterial diversity coupled with a higher degree of bacterial specialization towards the root. Bacteria–bacteria interactions (BBIs) are also prevalent in the rhizosphere, influencing bacterial persistence and root colonization through metabolic exchanges, secretion of antimicrobial compounds and other processes. Traditionally, bacterial colonization has been examined under sterile laboratory conditions that mitigate the influence of BBIs. Using simplified synthetic bacterial communities combined with microfluidic imaging platforms and transposon mutagenesis screening approaches, we are now able to begin unravelling the molecular mechanisms at play during the early stages of root colonization. This review explores the current state of knowledge regarding bacterial root colonization and identifies key tools for future exploration.
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