PXD052703-1

PXD052703 is an original dataset announced via ProteomeXchange.

Title	The flavonoid-sensing regulator AefR is involved in modulating quorum sensing through repressing the MexEF-OprN efflux pump in Pseudomonas fluorescens
Description	Pseudomonas fluorescens is an important plant growth-promoting rhizobacteria (PGPR) for its biocontrol properties, which are mostly influenced by the quorum sensing (QS) system. Plants produce multiple metabolites like flavonoids to regulate physiology of PGPR. However, it remains under-explored how flavonoids produced by plant roots influence the QS system of PGPR. In this study, we found the TetR-family regulator AefR was capable of binding to flavonoids and could inhibit production of AHLs by suppressing the expression of mexEF-oprN in P. fluorescens 2P24. We further showed that the efflux pump MexEF-OprN could attenuate the quorum sensing system PcoR/PcoI by extruding homoserine lactone (AHLs) molecules, leading to reduced biosynthesis of secondary metabolite mupirocin. Taken together, this study identified a TetR-like regulator responding to plant flavonoids and regulating the quorum sensing, providing insights into the interaction between PGPR and plant roots.
HostingRepository	PRIDE
AnnounceDate	2025-02-15
AnnouncementXML	Submission_2025-02-14_23:04:06.306.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	yu xiaoquan
SpeciesList	scientific name: Pseudomonas fluorescens; NCBI TaxID: 294;
ModificationList	monohydroxylated residue
Instrument	Orbitrap Fusion Lumos

Revision	Datetime	Status	ChangeLog Entry
0	2024-05-30 02:06:02	ID requested
⏵ 1	2025-02-14 23:04:06	announced

Dataset with its publication pending

submitter keyword: Pseudomonas fluorescens

He Yongxing
contact affiliation	lanzhou university
contact email	heyx@lzu.edu.cn
lab head
yu xiaoquan
contact affiliation	Lanzhou University
contact email	csu_yxq@163.com
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD052703
     1. Label: PRIDE project
     2. Name: The flavonoid-sensing regulator AefR is involved in modulating quorum sensing through repressing the MexEF-OprN efflux pump in Pseudomonas fluorescens