Unveiling the Role of Diffusible Signal Factor-Family Quorum Sensing Signals in Regulating Behavior of Xanthomonas and Lysobacter

文献类型： 外文期刊

第一作者： Li, Kaihuai

作者： Li, Kaihuai;Ma, Chaoyun;Xiong, Chunlan;Zhou, Xue;Wang, Yong;Liu, Fengquan;Li, Kaihuai;Ma, Chaoyun;Xiong, Chunlan;Zhou, Xue;Wang, Yong;Liu, Fengquan;Li, Kaihuai;Wang, Yong;Mao, Yahui;Liu, Fengquan

作者机构：

关键词： diffusible signal factor; Lysobacter enzymogenes; quorum sensing; Xanthomonas campestris

期刊名称：PHYTOPATHOLOGY （ 影响因子：3.2； 五年影响因子：3.9 ）

ISSN： 0031-949X

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Diffusible signal factor (DSF) family signals represent a unique group of quorum sensing (QS) chemicals that modulate a wide range of behaviors for bacteria to adapt to different environments. However, whether DSF-mediated QS signaling acts as a public language to regulate the behavior of biocontrol and pathogenic bacteria remains unknown. In this study, we present groundbreaking evidence demonstrating that RpfF(Xc1) or RpfF(OH11) could be a conserved DSF-family signal synthase in Xanthomonas campestris or Lysobacter enzymogenes. Interestingly, we found that both RpfF(OH11) and RpfF(Xc1) have the ability to synthesize DSF and BDSF signaling molecules. DSF and BDSF positively regulate the biosynthesis of an antifungal factor (heat-stable antifungal factor, HSAF) in L. enzymogenes. Finally, we show that RpfF(Xc1) and RpfF(OH11) have similar functions in regulating HSAF production in L. enzymogenes, as well as the virulence, synthesis of virulence factors, biofilm formation, and extracellular polysaccharide production in X. campestris. These findings reveal a previously uncharacterized mechanism of DSF-mediated regulation in both biocontrol and pathogenic bacteria.

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