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Identification of c-di-GMP Signaling Components in and Their Orthologs in Xanthomonads Involved in Regulation of Bacterial Virulence Expression. | LitMetric

Identification of c-di-GMP Signaling Components in and Their Orthologs in Xanthomonads Involved in Regulation of Bacterial Virulence Expression.

Front Microbiol

State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.

Published: July 2019

AI Article Synopsis

Article Abstract

pv. () causes bacterial leaf blight of rice, one of the most devastating bacterial diseases of this staple crop worldwide. produces a range of virulence-related factors to facilitate its pathogenesis in rice, however, the regulatory mechanisms of virulence expression have been not fully elucidated. Recent studies have revealed that virulence factor production is regulated via cyclic dimeric guanosine monophosphate (c-di-GMP) signaling pathway that is well-conserved in and other species. A set of GGDEF, EAL, HD-GYP, and PilZ domain proteins with diverse signal sensory domains for c-di-GMP synthesis, hydrolysis, and binding is encoded in the genome. Bioinformatic, genetic, and biochemical analysis has identified an array of diguanylate cyclases (DGCs) and phosphodiesterases (PDEs), as well as degenerate GGDEF/EAL, PilZ domain proteins along with a transcription regulator. These signaling components have been characterized to regulate various bacterial cellular processes, such as virulence, exopolysaccharide (EPS) production, biofilm formation, motility, and adaptation at the transcriptional, post-translational, and protein-protein interaction levels. This review summarized the recent progress in understanding the importance and complexity of c-di-GMP signaling in regulating bacterial virulence expression, highlighting the identified key signal elements and orthologs found in Xanthomonads, discussing the diverse functions of GGDEF/EAL/HD-GYP domains, existence of a complicated multifactorial network between DGCs, PDEs, and effectors, and further exploration of the new c-di-GMP receptor domains. These findings and knowledge lay the groundwork for future experimentation to further elucidate c-di-GMP regulatory circuits involved in regulation of bacterial pathogenesis.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6637768PMC
http://dx.doi.org/10.3389/fmicb.2019.01402DOI Listing

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