Transcriptome analysis expands the potential roles of quorum sensing in biodegradation and physiological responses to microcystin

2021 ◽  
Vol 771 ◽  
pp. 145437
Author(s):  
Yan-Hua Zeng ◽  
Ke-Ke Cheng ◽  
Zhong-Hua Cai ◽  
Jian-Ming Zhu ◽  
Xiao-Peng Du ◽  
...  
PLoS ONE ◽  
2013 ◽  
Vol 8 (4) ◽  
pp. e62337 ◽  
Author(s):  
Christopher N. LaRock ◽  
Jing Yu ◽  
Alexander R. Horswill ◽  
Matthew R. Parsek ◽  
F. Chris Minion

Author(s):  
Christopher N. LaRock ◽  
Jing Yu ◽  
Alexander R. Horswill ◽  
Matthew R. Parsek ◽  
F. Chris Minion

BMC Genomics ◽  
2016 ◽  
Vol 17 (1) ◽  
Author(s):  
Nadia Mhedbi-Hajri ◽  
Noura Yahiaoui ◽  
Samuel Mondy ◽  
Nathalie Hue ◽  
Franck Pélissier ◽  
...  

2013 ◽  
Vol 29 (3) ◽  
pp. 249-259 ◽  
Author(s):  
Sunyoung Kim ◽  
Jungwook Park ◽  
Ji Hyeon Kim ◽  
Jongyun Lee ◽  
Bongjun Bang ◽  
...  

3 Biotech ◽  
2018 ◽  
Vol 8 (9) ◽  
Author(s):  
Jianmin Xu ◽  
Zhiming Yan ◽  
Zhigang Xu ◽  
Yuanhua Wang ◽  
Zhenqiang Xie

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Jinpeng Wan ◽  
Ping Zhang ◽  
Ruling Wang ◽  
Liangliang Sun ◽  
Qiong Ju ◽  
...  

2003 ◽  
Vol 185 (7) ◽  
pp. 2066-2079 ◽  
Author(s):  
Martin Schuster ◽  
C. Phoebe Lostroh ◽  
Tomoo Ogi ◽  
E. P. Greenberg

ABSTRACT There are two interrelated acyl-homoserine lactone quorum-sensing-signaling systems in Pseudomonas aeruginosa. These systems, the LasR-LasI system and the RhlR-RhlI system, are global regulators of gene expression. We performed a transcriptome analysis to identify quorum-sensing-controlled genes and to better understand quorum-sensing control of P. aeruginosa gene expression. We compared gene expression in a LasI-RhlI signal mutant grown with added signals to gene expression without added signals, and we compared a LasR-RhlR signal receptor mutant to its parent. In all, we identified 315 quorum-induced and 38 quorum-repressed genes, representing about 6% of the P. aeruginosa genome. The quorum-repressed genes were activated in the stationary phase in quorum-sensing mutants but were not activated in the parent strain. The analysis of quorum-induced genes suggests that the signal specificities are on a continuum and that the timing of gene expression is on a continuum (some genes are induced early in growth, most genes are induced at the transition from the logarithmic phase to the stationary phase, and some genes are induced during the stationary phase). In general, timing was not related to signal concentration. We suggest that the level of the signal receptor, LasR, is a critical trigger for quorum-activated gene expression. Acyl-homoserine lactone quorum sensing appears to be a system that allows ordered expression of hundreds of genes during P. aeruginosa growth in culture.


2021 ◽  
Vol 5 (7) ◽  
pp. 275-292
Author(s):  
Ting Ding ◽  
◽  
Yong Li

Pseudomonas fluorescens is an important psychrotrophic food-spoilage bacterium. Quorum sensing (QS) enables bacteria to control various physiological processes. Hence, targeting bacterial QS would be a novel method to improve food quality. In this study, P. fluorescens P07 was treated with vanillin, which showed strong QS inhibitory activity, and its resultant effects on swarming motility, biofilm formation, and extracellular polymeric substance (EPS) secretion were measured. The mechanisms underlying the inhibitory effects were then explored by transcriptomic analysis. The results showed that vanillin had inhibitory effects on swarming motility, biofilm formation, N-acyl-L-homoserine Lactone (AHLs) and EPS secretion of P. fluorescens P07. The result of transcriptionomic tests indicated that the decrease in bacterial biofilm formation was probably due to the influence of vanillin on mobility, adhesion, chemotaxis, EPS secretion, and QS system of the bacteria. Keywords: Pseudomonas fluorescens, quorum sensing, biofilm formation, transcriptome analysis, swarming motility


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