Distribution characteristics of N-acyl homoserine lactones during the moving bed biofilm reactor biofilm development process: Effect of carbon/nitrogen ratio and exogenous quorum sensing signals

2019 ◽  
Vol 289 ◽  
pp. 121591 ◽  
Author(s):  
Jinfeng Wang ◽  
Qiuju Liu ◽  
Sijia Ma ◽  
Haidong Hu ◽  
Bing Wu ◽  
...  
Keyword(s):  
Development Process ◽  
Biofilm Reactor ◽  
Distribution Characteristics ◽  
Moving Bed Biofilm Reactor ◽  
Homoserine Lactones ◽  
Acyl Homoserine Lactones ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio ◽  
Biofilm Development ◽  
Quorum Sensing Signals

Effect of carbon-to-nitrogen ratio on simultaneous nitrification denitrification and phosphorus removal in a microaerobic moving bed biofilm reactor

2019 ◽  
Vol 250 ◽  
pp. 109518 ◽  
Author(s):  
Francesca Iannacone ◽  
Francesco Di Capua ◽  
Francesco Granata ◽  
Rudy Gargano ◽  
Francesco Pirozzi ◽  
...  
Keyword(s):  
Phosphorus Removal ◽  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Carbon To Nitrogen Ratio ◽  
Nitrogen Ratio

scholarly journals Metabolism of Acyl-Homoserine Lactone Quorum-Sensing Signals by Variovorax paradoxus

2000 ◽  
Vol 182 (24) ◽  
pp. 6921-6926 ◽  
Author(s):  
Jared R. Leadbetter ◽  
E. P. Greenberg
Keyword(s):  
Energy Source ◽  
Nitrogen Sources ◽  
Homoserine Lactone ◽  
Sole Source ◽  
Acyl Homoserine Lactone ◽  
Homoserine Lactones ◽  
Variovorax Paradoxus ◽  
Acyl Homoserine Lactones ◽  
Quorum Sensing Signals ◽  
Sole Energy

ABSTRACT Acyl-homoserine lactones (acyl-HSLs) serve as dedicated cell-to-cell signaling molecules in many species of the classProteobacteria. We have addressed the question of whether these compounds can be degraded biologically. A motile, rod-shaped bacterium was isolated from soil based upon its ability to utilizeN-(3-oxohexanoyl)-l-homoserine lactone as the sole source of energy and nitrogen. The bacterium was classified as a strain of Variovorax paradoxus. TheV. paradoxus isolate was capable of growth on all of the acyl-HSLs tested. The molar growth yields correlated with the length of the acyl group. HSL, a product of acyl-HSL metabolism, was used as a nitrogen source, but not as an energy source. Cleavage and partial mineralization of the HSL ring were demonstrated by using radiolabeled substrate. This study indicates that some strains of V. paradoxus degrade and grow on acyl-HSL signals as the sole energy and nitrogen sources. This study provides clues about the metabolic pathway of acyl-HSL degradation by V. paradoxus.

scholarly journals Evidence for Acyl Homoserine Lactone Signal Production in Bacteria Associated with Marine Sponges

2004 ◽  
Vol 70 (7) ◽  
pp. 4387-4389 ◽  
Author(s):  
Michael W. Taylor ◽  
Peter J. Schupp ◽  
Harriet J. Baillie ◽  
Timothy S. Charlton ◽  
Rocky de Nys ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Bacterial Colonization ◽  
Homoserine Lactone ◽  
Marine Sponges ◽  
Acyl Homoserine Lactone ◽  
Homoserine Lactones ◽  
Acyl Homoserine Lactones ◽  
Signal Production ◽  
First Time ◽  
Quorum Sensing Signals

ABSTRACT We report for the first time the production of acyl homoserine lactones (AHLs) by bacteria associated with marine sponges. Given the involvement of AHLs in bacterial colonization of many higher organisms, we speculate that such quorum sensing signals could play a part in interactions between sponges and the dense bacterial communities living within them.

Inactivation of bacterial quorum sensing signals N-acyl homoserine lactones is widespread in yeasts

2018 ◽  
Vol 122 (1) ◽  
pp. 52-62 ◽  
Author(s):  
Ana Carolina del V. Leguina ◽  
Carolina Nieto ◽  
Hipólito F. Pajot ◽  
Elisa V. Bertini ◽  
Walter Mac Cormack ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Homoserine Lactones ◽  
Acyl Homoserine Lactones ◽  
Bacterial Quorum Sensing ◽  
Bacterial Quorum ◽  
Quorum Sensing Signals

A photoluminescence biosensor for the detection of N-acyl homoserine lactone using cysteamine functionalized ZnO nanoparticles for the early diagnosis of urinary tract infections

2020 ◽  
Vol 8 (19) ◽  
pp. 4228-4236
Author(s):  
Sahana Vasudevan ◽  
Parthasarathy Srinivasan ◽  
John Bosco Balaguru Rayappan ◽  
Adline Princy Solomon
Keyword(s):  
Urinary Tract ◽  
Early Diagnosis ◽  
Urinary Tract Infections ◽  
Zno Nanoparticles ◽  
Homoserine Lactone ◽  
Acyl Homoserine Lactone ◽  
Homoserine Lactones ◽  
Acyl Homoserine Lactones ◽  
Tract Infections ◽  
Quorum Sensing Signals

We report a PL biosensor using cysteamine functionalized ZnO nanoparticles for the detection of quorum sensing signals (N-acyl homoserine lactones).

scholarly journals Global and Phylogenetic Distribution of Quorum Sensing Signals, Acyl Homoserine Lactones, in the Family of Vibrionaceae

Marine Drugs ◽  
2014 ◽  
Vol 12 (11) ◽  
pp. 5527-5546 ◽  
Author(s):  
Bastian Rasmussen ◽  
Kristian Nielsen ◽  
Henrique Machado ◽  
Jette Melchiorsen ◽  
Lone Gram ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Phylogenetic Distribution ◽  
Homoserine Lactones ◽  
Acyl Homoserine Lactones ◽  
The Family ◽  
Quorum Sensing Signals

scholarly journals The GCR1 and GPA1 Participate in Promotion of Arabidopsis Primary Root Elongation Induced by N-Acyl-Homoserine Lactones, the Bacterial Quorum-Sensing Signals

2012 ◽  
Vol 25 (5) ◽  
pp. 677-683 ◽  
Author(s):  
Fang Liu ◽  
Ziriu Bian ◽  
Zhenhua Jia ◽  
Qian Zhao ◽  
Shuishan Song
Keyword(s):  
Quorum Sensing ◽  
Root Elongation ◽  
Primary Root ◽  
Homoserine Lactone ◽  
Collective Behaviors ◽  
Homoserine Lactones ◽  
Acyl Homoserine Lactones ◽  
Bacterial Quorum Sensing ◽  
Bacterial Quorum ◽  
Quorum Sensing Signals

Many gram-negative bacteria use N-acyl-homoserine lactones (AHL) as quorum-sensing signals to coordinate their collective behaviors. Accumulating evidence indicates that plants can respond to AHL. However, little is known about the molecular mechanism of plants reacting to these bacterial signals. In this study, we show that the treatment of Arabidopsis roots with N-3-oxo-hexanoyl-homoserine lactone (3OC6-HSL) and N-3-oxo-octanoyl-homoserine lactone (3OC8-HSL) resulted in significant root elongation. The genetic analysis revealed that the T-DNA insertional mutants of gcr1, encoding a G-protein-coupled receptor GCR1, were insensitive to 3OC6-HSL or 3OC8-HSL in assays of root growth. The loss-of-function mutants of the sole canonical Gα subunit GPA1 showed no response to AHL promotion of root elongation whereas Gα gain-of-function plants overexpressing either the wild type or a constitutively active version of Arabidopsis Gα exhibited the exaggerated effect on root elongation caused by AHL. Furthermore, the expression of GCR1 and GPA1 were significantly upregulated after plants were contacted with both AHL. Taken together, our results suggest that GCR1 and GPA1 are involved in AHL-mediated elongation of Arabidopsis roots. This provides insight into the mechanism of plant responses to bacterial quorum-sensing signals.

Sign in / Sign up

Export Citation Format

Share Document