Results 71 to 80 of about 6,063 (169)

A Burkholderia cenocepacia Orphan LuxR Homolog Is Involved in Quorum-Sensing Regulation [PDF]

Journal of Bacteriology, 2009
ABSTRACT Burkholderia cenocepacia utilizes quorum sensing to control gene expression, including the expression of genes involved in virulence. In addition to CepR and CciR, a third LuxR homolog, CepR2, was found to regulate gene expression and virulence factor production. All B.
Malott Rebecca J, O'Grady Eoin P, Toller Jessica, Inhülsen Silja, Eberl Leo, Sokol Pamela A   +5 more
openaire   +3 more sources

An Evolving Perspective on the Pseudomonas aeruginosa Orphan Quorum Sensing Regulator QscR

Frontiers in Cellular and Infection Microbiology, 2014
Many Proteobacteria govern responses to changes in cell density by using acyl-homoserine lactone (AHL) quorum-sensing (QS) signaling. Similar to the LuxI-LuxR system described in Vibrio fischeri, a minimal AHL QS circuit comprises a pair of genes, a luxI-
Everett Peter Greenberg, Sudha eChugani
doaj   +1 more source

Exposure to static magnetic field stimulates quorum sensing circuit in luminescent Vibrio strains of the Harveyi clade. [PDF]

PLoS ONE, 2014
In this study, the evidence of electron-dense magnetic inclusions with polyhedral shape in the cytoplasm of Harveyi clade Vibrio strain PS1, a bioluminescent bacterium living in symbiosis with marine organisms, led us to investigate the behavior of this ...
Adelfia Talà, Domenico Delle Side, Giovanni Buccolieri, Salvatore Maurizio Tredici, Luciano Velardi, Fabio Paladini, Mario De Stefano, Vincenzo Nassisi, Pietro Alifano   +8 more
doaj   +1 more source

Microbiome‐mediated chemical communication in insects: Implications for pest management

Pest Management Science, Volume 82, Issue 9, Page 8132-8151, September 2026.
Microbiome–semiochemical interactions involve the following processes: direct microbial synthesis, host gene regulation, precursor biotransformation, microbiome modulation and indirect ecological signaling. Abstract Insects rely on semiochemicals to regulate aggregation, mating, foraging, and host selection. This review synthesizes evidence that insect‐
Ioannis Eleftherianos, Wei Zhang, Amr Mohamed, Rasha K. Al‐Akeel, Abeer M. Alkhaibari, Nemat Keyhani, Guy Smagghe   +6 more
wiley   +1 more source

A Mutational Analysis Defines Vibrio fischeri LuxR Binding Sites [PDF]

Journal of Bacteriology, 2008
ABSTRACT Vibrio fischeri quorum sensing involves the LuxI and LuxR proteins. The LuxI protein generates the quorum-sensing signal N -3-oxohexanoyl- l -homoserine lactone (3OC6-HSL), and LuxR is a signal-responsive transcriptional regulator which activates the ...
Luis Caetano M, Antunes, Rosana B R, Ferreira, C Phoebe, Lostroh, E Peter, Greenberg   +3 more
openaire   +2 more sources

A LuxR Homolog in a Cottonwood Tree Endophyte That Activates Gene Expression in Response to a Plant Signal or Specific Peptides

mBio, 2016
Homologs of the LuxR acyl-homoserine lactone (AHL) quorum-sensing signal receptor are prevalent in Proteobacteria isolated from roots of the Eastern cottonwood tree, Populus deltoides.
Amy L. Schaefer, Yasuhiro Oda, Bruna Goncalves Coutinho, Dale A. Pelletier, Justin Weiburg, Vittorio Venturi, E. Peter Greenberg, Caroline S. Harwood   +7 more
doaj   +1 more source

Halogenated furanones inhibit quorum sensing through accelerated LuxR turnover [PDF]

Microbiology, 2002
N-acyl-L-homoserine lactones (AHLs) are co-regulatory ligands required for control of the expression of genes encoding virulence traits in many Gram-negative bacterial species. Recent studies have indicated that AHLs modulate the cellular concentrations of LuxR-type regulatory proteins by binding and fortifying these proteins against proteolytic ...
Manefield, Michael, Rasmussen, Thomas Bovbjerg, Henzter, Morten, Andersen, Jens Bo, Steinberg, Peter, Kjelleberg, Staffan, Givskov, Michael   +6 more
openaire   +2 more sources

2-Substituted Aniline as a Simple Scaffold for LuxR-Regulated QS Modulation

Molecules, 2017
The ability of the 2-substituted aniline motif to serve as a scaffold for designing potential LuxR-regulated quorum sensing (QS) modulators has been investigated, using docking experiments and biological evaluation of a series of 15 specially synthesized
Sizhe Li, Julien Wawrzyniak, Yves Queneau, Laurent Soulère   +3 more
doaj   +1 more source

Epinephrine Enhances Virulence‐Associated Traits of Vibrio alginolyticus and Increases Mortality in Sciaenops ocellatus (Linnaeus, 1766)

Aquaculture, Fish and Fisheries, Volume 6, Issue 4, August 2026.
ABSTRACT Stress hormones released during aquaculture handling and environmental disturbances can influence host–pathogen interactions, yet their effects on marine bacterial pathogens remain largely unexplored. This study examined how the stress hormone epinephrine affects the virulence of Vibrio alginolyticus isolated from diseased red drum (Sciaenops ...
Nguyen Duc Quynh Anh, Nguyen Thi Hue Linh, Nguyen Thi Xuan Hong, Nguyen Nam Quang, Tran Quang Khanh Van, Tran Nguyen Ngoc, Carola Venturini, Francisca Samsing Pedrals, Ruth N. Zadoks, Nguyen Ngoc Phuoc   +9 more
wiley   +1 more source

In silico analyses of conservational, functional and phylogenetic distribution of the LuxI and LuxR homologs in Gram-positive bacteria

Scientific Reports, 2017
LuxI and LuxR are key factors that drive quorum sensing (QS) in bacteria through secretion and perception of the signaling molecules e.g. N-Acyl homoserine lactones (AHLs).
Akanksha Rajput, Manoj Kumar
doaj   +1 more source