Contribution of the RNA Chaperone Hfq to Environmental Fitness and Symbiosis in
            <i>Sinorhizobium meliloti</i>

Jiménez‐Zurdo, José I.; Torres‐Quesada, Omar; Valverde, Claudio; Sobrero, Patricio

doi:10.1002/9781119053095.ch73

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Proteins Assisting Srna Activity1

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2020

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“…The role of RNA-binding proteins and ribonucleases in RNA-mediated regulation is best understood in the model E. coli, phylogenetically close enterobacteria and other pathogens [102]. Nonetheless, RNA research has also contributed to gain specific insights into the biology of these proteins in rhizobia [103,110].…”

Section: Proteins Assisting Srna Activitymentioning

confidence: 99%

Riboregulation in Nitrogen-Fixing Endosymbiotic Bacteria

2020

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Small non-coding RNAs (sRNAs) are ubiquitous components of bacterial adaptive regulatory networks underlying stress responses and chronic intracellular infection of eukaryotic hosts. Thus, sRNA-mediated regulation of gene expression is expected to play a major role in the establishment of mutualistic root nodule endosymbiosis between nitrogen-fixing rhizobia and legume plants. However, knowledge about this level of genetic regulation in this group of plant-interacting bacteria is still rather scarce. Here, we review insights into the rhizobial non-coding transcriptome and sRNA-mediated post-transcriptional regulation of symbiotic relevant traits such as nutrient uptake, cell cycle, quorum sensing, or nodule development. We provide details about the transcriptional control and protein-assisted activity mechanisms of the functionally characterized sRNAs involved in these processes. Finally, we discuss the forthcoming research on riboregulation in legume symbionts.

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Section: Proteins Assisting Srna Activitymentioning

confidence: 99%