Harfouche Lamia, Haichar Feth el Zahar, Achouak Wafa
New Phytol. 2015 Apr;206(1):98-106. doi: 10.1111/nph.13195. Epub 2014 Dec 4.
Small regulatory RNAs (sRNAs) play a key role in many physiological and adaptive responses in bacteria. Faced with rapidly changing environments, it is more advantageous for bacteria to use sRNA-mediated responses than regulation by protein transcriptional factors, as sRNAs act at the post-transcriptional level and require less energy and time for their synthesis and turnover. The use of RNA deep sequencing has provided hundreds of sRNA candidates in different bacterial species that interact with plants. Here, we review the most recent results for the involvement of bacterial sRNAs in beneficial as well as deleterious plant–bacteria interactions. We describe the current view for the role of sRNAs, which are suggested to improve competition for both niches and resources in plant-interacting bacteria. These sRNAs also help plant-associated bacteria individually adapt to the rapidly changing conditions to which they are exposed, during different stages of this interaction.
小调控RNA（sRNA）在细菌的许多生理和适应性反应中起着关键作用。面对快速变化的环境，细菌利用sRNA介导的反应比通过蛋白质转录因子进行调控更具优势，因为sRNA在转录后水平起作用，其合成和周转所需的能量和时间较少。RNA深度测序的应用已在与植物相互作用的不同细菌物种中发现了数百种sRNA候选物。在此，我们综述了细菌sRNA参与有益和有害植物-细菌相互作用的最新研究结果。我们描述了sRNA作用的当前观点，即它们被认为可增强植物相互作用细菌在生态位和资源方面的竞争力。这些sRNA还帮助与植物相关的细菌在这种相互作用的不同阶段分别适应它们所面临的快速变化的条件。
