Results 71 to 80 of about 14,518 (211)

N-Acyl Homoserine Lactone Production by Klebsiella pneumoniae Isolated from Human Tongue Surface

open access: yesSensors, 2012
Bacteria communicate by producing quorum sensing molecules called autoinducers, which include autoinducer-1, an N-hexanoyl homoserine lactone (AHL), and autoinducer-2.
Kok-Gan Chan   +6 more
doaj   +1 more source

Quorum-sensing synthase mutations re-calibrate autoinducer concentrations in clinical isolates of Pseudomonas aeruginosa to enhance pathogenesis

open access: yesNature Communications, 2023
Quorum sensing is a mechanism of bacterial communication that controls virulence gene expression. Pseudomonas aeruginosa regulates virulence via two synthase/transcription factor receptor pairs: LasI/R and RhlI/R.
Kayla A. Simanek   +5 more
doaj   +1 more source

One can’t stand on its own: Are non-luminescence traits necessary for V. fischeri colonization of E. scolopes? [PDF]

open access: yes, 2012
Vibrio fischeri and Euprymna scolopes squid establish mutualistic symbiosis and select for each other in the natural environment. V. fischeri provides bioluminescent camouflage for E. scolopes while E. scolopes provides nutrients for V. fischeri.
Liu, Feier
core   +1 more source

How Salmonella Works Under Osmotic and Desiccation Stresses

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 3, May 2026.
ABSTRACT Salmonella remains one of the leading threats in foods with reduced water activity, where it can survive for long periods and cause outbreaks. Its persistence stems from a wide array of adaptive strategies shaped by the selective pressures imposed by low‐moisture foods.
Mayara Messias Oliveira   +2 more
wiley   +1 more source

AinS and a new family of autoinducer synthesis proteins [PDF]

open access: yesJournal of Bacteriology, 1995
In Vibrio fischeri, the autoinducer N-3-oxohexanoyl-L-homoserine lactone (AI-1) governs the cell density-dependent induction of the luminescence operon via the LuxR transcriptional activator. The synthesis of AI-1 from bacterial metabolic intermediates is dependent on luxI. Recently, we found a second V.
L, Gilson, A, Kuo, P V, Dunlap
openaire   +2 more sources

The Pseudomonas chlororaphis PCL1391 Sigma Regulator psrA Represses the Production of the Antifungal Metabolite Phenazine-1-Carboxamide

open access: yesMolecular Plant-Microbe Interactions, 2005
The rhizobacterium Pseudomonas chlororaphis PCL1391 produces the antifungal metabolite phenazine-1-carboxamide (PCN), which is a crucial trait in its competition with the phytopathogenic fungus Fusarium oxysporum f. sp.
Thomas F. C. Chin-A-Woeng   +3 more
doaj   +1 more source

Impeding Quorum Sensing Among the Intestinal Microbiota Impacts the Metastatic Rate of Colorectal Cancer

open access: yesCancer Medicine
Background The gut microbiota is associated with colorectal cancer (CRC) risk and CRC metastatic potential. However, the role of bacteria in CRC progression and metastasis remains unclear. Aims Here, we hypothesized that microbial communication, mediated
Matthew Dietz   +5 more
doaj   +1 more source

Examination of AI-2 quorum sensing System in Prevotella bryantii and Prevotella ruminicola-like strains by using bioluminiscence assay

open access: yesActa Agriculturae Slovenica, 2007
Rumen is an example of a complex microbial ecosystem where extensive intraspecies as well as interspecies cell-cell cross-communication is expected, but little is known about. Four ruminal Prevotella strains, Prevotella bryantii B14, TC1-1 and TF1-3, and 
Gregor GORENC   +2 more
doaj   +1 more source

Coupling metabolic footprinting and flux balance analysis to predict how single gene knockouts perturb microbial metabolism [PDF]

open access: yes, 2012
Tese de mestrado. Biologia (Bioinformática e Biologia Computacional). Universidade de Lisboa, Faculdade de Ciências, 2012The model organisms Caenorhabditis elegans and E. coli form one of the simplest gut microbe host interaction models. Interventions in
Correia, Gonçalo dos Santos, 1989-
core  

Quorumpeps database : chemical space, microbial origin and functionality of quorum sensing peptides [PDF]

open access: yes, 2012
Quorum-sensing (QS) peptides are biologically attractive molecules, with a wide diversity of structures and prone to modifications altering or presenting new functionalities. Therefore, the Quorumpeps database (http://quorumpeps.ugent.be) is developed to
Bracke, Nathalie   +9 more
core   +2 more sources

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