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The LuxO-OpaR quorum-sensing cascade differentially controls Vibriophage VP882 lysis-lysogeny decision making in liquid and on surfaces.

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العنوان: The LuxO-OpaR quorum-sensing cascade differentially controls Vibriophage VP882 lysis-lysogeny decision making in liquid and on surfaces.
المؤلفون: Francis J Santoriello, Bonnie L Bassler
المصدر: PLoS Genetics, Vol 20, Iss 7, p e1011243 (2024)
بيانات النشر: Public Library of Science (PLoS), 2024.
سنة النشر: 2024
المجموعة: LCC:Genetics
مصطلحات موضوعية: Genetics, QH426-470
الوصف: Quorum sensing (QS) is a process of cell-to-cell communication that bacteria use to synchronize collective behaviors. QS relies on the production, release, and group-wide detection of extracellular signaling molecules called autoinducers. Vibrios use two QS systems: the LuxO-OpaR circuit and the VqmA-VqmR circuit. Both QS circuits control group behaviors including biofilm formation and surface motility. The Vibrio parahaemolyticus temperate phage φVP882 encodes a VqmA homolog (called VqmAφ). When VqmAφ is produced by φVP882 lysogens, it binds to the host-produced autoinducer called DPO and launches the φVP882 lytic cascade. This activity times induction of lysis with high host cell density and presumably promotes maximal phage transmission to new cells. Here, we explore whether, in addition to induction from lysogeny, QS controls the initial establishment of lysogeny by φVP882 in naïve host cells. Using mutagenesis, phage infection assays, and phenotypic analyses, we show that φVP882 connects its initial lysis-lysogeny decision to both host cell density and whether the host resides in liquid or on a surface. Host cells in the low-cell-density QS state primarily undergo lysogenic conversion. The QS regulator LuxO~P promotes φVP882 lysogenic conversion of low-cell-density planktonic host cells. By contrast, the ScrABC surface-sensing system regulates lysogenic conversion of low-cell-density surface-associated host cells. ScrABC controls the abundance of the second messenger molecule cyclic diguanylate, which in turn, modulates motility. The scrABC operon is only expressed when its QS repressor, OpaR, is absent. Thus, at low cell density, QS-dependent derepression of scrABC drives lysogenic conversion in surface-associated host cells. These results demonstrate that φVP882 integrates cues from multiple sensory pathways into its lifestyle decision making upon infection of a new host cell.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1553-7390
1553-7404
Relation: https://doaj.org/toc/1553-7390; https://doaj.org/toc/1553-7404
DOI: 10.1371/journal.pgen.1011243
URL الوصول: https://doaj.org/article/33c2de319020401984475243f69b501b
رقم الانضمام: edsdoj.33c2de319020401984475243f69b501b
قاعدة البيانات: Directory of Open Access Journals
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