Microbial #dysbiosis alters chemical cues in the oral #microbiome, but how do commensals sense these? This study shows that #Streptococcus salivarius detects dysbiosis metabolites & repurposes a peptide #QuorumSensing receptor to drive antibacterial predation @PLOSBiology plos.io/4rtVSbf
The science of how fireflies stay in sync Engineers have uncovered the mathematical rules fireflies follow to sync up their flashes. https://s.faithcollapsing.com/tvptu#biology #biophysics #collective-motion #quorum-sensing #science #swarms
The science of how fireflies stay in sync

Engineers have uncovered the mathematical rules fireflies follow to sync up their flashes.

Ars Technica
New publication: AHL quorum sensing regulates T6SS and volatiles production in #rice root-colonizing #Enterobacter asburiae AG129, by @PaolinaGarbeva and others. #bacteria #quorumsensing
https://doi.org/10.1093/femsec/fiaf120
Wow, I hadn't realised Nigel Franks didn't publish about this until 2015. He'd been talking about it as long as I'd been at Bath (since 2002), probably longer. Gives me hope for some of my own #cooperation work that's languishing. IMO, #quorumSensing explains a LOT. www.nature.com/articles/sre...

How ants use quorum sensing to...
How ants use quorum sensing to estimate the average quality of a fluctuating resource - Scientific Reports

We show that one of the advantages of quorum-based decision-making is an ability to estimate the average value of a resource that fluctuates in quality. By using a quorum threshold, namely the number of ants within a new nest site, to determine their choice, the ants are in effect voting with their feet. Our results show that such quorum sensing is compatible with homogenization theory such that the average value of a new nest site is determined by ants accumulating within it when the nest site is of high quality and leaving when it is poor. Hence, the ants can estimate a surprisingly accurate running average quality of a complex resource through the use of extraordinarily simple procedures.

Nature
Many bacteria use #QuorumSensing to control genes based on population density. This Primer explores a @PLOSBiology study showing that in P. aeruginosa, two QS circuits activate each other, enhancing robustness & explaining redundancy. Paper: https://plos.io/3I7DhRG Primer: https://plos.io/4niSZZd
Bacterial #QuorumSensing is often assumed to follow a strict hierarchy. This study finds that #Pseudomonas aeruginosa instead uses a reciprocal, cooperative system that enhances responsiveness to population density & environmental changes @PLOSBiology https://plos.io/3I7DhRG
Winzig klein, doch hochkomplex: #Bakterien sind faszinierende Organismen. Mithilfe chemischer Signale - dem sogenannten #QuorumSensing - koordinieren sie ihr Verhalten kommunizieren in Lebensgemeinschaften. Mehr bei @scifri im Podcast. https://www.sciencefriday.com/segments/bacteria-communication-bonnie-bassler/
How Do Bacteria Talk To Each Other?

Bacteria are not as simple as their reputation suggests. Understanding how they communicate may lead to better disease treatments for us humans.

Science Friday
Before you continue to YouTube

#Vibrio #bacteria sense and respond to changes in cell density & nutrients. @biolluminator &co reveal a link between #QuorumSensing & metabolic regulation that confers fitness advantages in the presence of certain nutrients #PLOSBiology https://plos.io/4fI0AN1
Quorum sensing in Vibrio controls carbon metabolism to optimize growth in changing environmental conditions

Vibrio bacteria sense their surroundings, such as changes in cell density and nutrients, and respond to them using various signaling pathways. This study reveals a link between quorum sensing and metabolic regulation that confers fitness advantages in the presence of certain nutrients.