Gac two-component system in Pseudomonas syringae pv. tabaci is required for virulence but not for hypersensitive reaction [PDF]
, 2008 Pseudomonas syringae pv. tabaci 6605 causes wildfire disease on host tobacco plants. To investigate the regulatory mechanism of the expression of virulence, Gac two-Component system-defective mutants, Delta gacA and Delta gacS, and a double mutant, Delta
A Bultreys +38 more
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Acylated homoserine lactones in the environment: chameleons of bioactivity [PDF]
Philosophical Transactions of the Royal Society B: Biological Sciences, 2007 Over the last 15 years, it has become increasingly apparent that a single class of compounds, the acylated homoserine lactones (AHLs), elicit effects on many levels of biological and ecological organization. Despite the fact that the distribution of AHL production in the prokaryotic phylogenetic tree is restricted to a small set of genera ...
Manefield, Mike, Whiteley, Andrew S.
openaire +3 more sources
Molecules, 2019 Many Gram-negative bacteria can regulate gene expression in a cell density-dependent manner via quorum-sensing systems using N-acyl-homoserine lactones (AHLs), which are typical quorum-sensing signaling molecules, and thus modulate physiological ...
Ling-Pu Liu +7 more
doaj +1 more source
Quorum-quenching activity of the AHL-lactonase from Bacillus licheniformis DAHB1 inhibits vibrio biofilm formation in vitro and reduces shrimp intestinal colonisation and mortality [PDF]
, 2014 Vibrio parahaemolyticus is a significant cause of gastroenteritis resulting from the consumption of undercooked sea foods and often cause significant infections in shrimp aquaculture. Vibrio virulence is associated with biofilm formation and is regulated
Shanthi, S. +4 more
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Detection of acyl-homoserine lactones by Escherichia and Salmonella [PDF]
Current Opinion in Microbiology, 2011 Escherichia and Salmonella do not synthesize quorum-sensing signaling molecules of the N-acyl-l-homoserine lactone (AHL) type but they can detect AHLs produced by other species of bacteria. AHLs are present in the bovine rumen but not in the remainder of the gastrointestinal tract. Enterohemorrhagic E.
Jitesh A, Soares, Brian M M, Ahmer
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Acyl homoserine lactones from culture supernatants of Pseudomonas aeruginosa accelerate host immunomodulation. [PDF]
PLoS ONE, 2011 The virulence of Pseudomonas aeruginosa is multifactorial and under the control of quorum sensing signals, such as acyl homoserine lactones (AHLs). The importance of these molecules in the establishment of infection has been previously reported.
Ravi Kumar Gupta +2 more
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Interkingdom signaling: Deciphering the language of acyl homoserine lactones [PDF]
FEMS Microbiology Reviews, 2005 Bacteria use small secreted chemicals or peptides as auto-inducers to coordinately regulate gene expression within a population in a process called quorum sensing. Quorum sensing controls several important functions in different bacterial species, including the production of virulence factors and biofilm formation in Pseudomonas aeruginosa and ...
Erin K, Shiner +2 more
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Rapid Acyl-Homoserine Lactone Quorum Signal Biodegradation in Diverse Soils [PDF]
Applied and Environmental Microbiology, 2005 ABSTRACT Signal degradation impacts all communications. Although acyl-homoserine lactone (acyl-HSL) quorum-sensing signals are known to be degraded by defined laboratory cultures, little is known about their stability in nature. Here, we show that acyl-HSLs are biodegraded in soils sampled from diverse U.S.
Wang, Ya-Juan, Leadbetter, Jared Renton
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In Planta Biocontrol of Pectobacterium atrosepticum by Rhodococcus erythropolis Involves Silencing of Pathogen Communication by the Rhodococcal Gamma-Lactone Catabolic Pathway. [PDF]
PLoS ONE, 2013 The virulence of numerous Gram-negative bacteria is under the control of a quorum sensing process based on synthesis and perception of N-acyl homoserine lactones.
Corinne Barbey +10 more
doaj +1 more source
Improvement in calcified anaerobic granular sludge performance by exogenous acyl-homoserine lactones
Ecotoxicology and Environmental Safety, 2021 Given the high content of Ca2+ in waste paper recycling wastewater, the anaerobic granular sludge (AnGS) undergoes calcification during wastewater treatment and affects the treatment efficiency.
Meiling Li +7 more
doaj +1 more source