Logic of two antagonizing intra-species quorum sensing systems in bacteria

Prajapat, Mahendra Kumar; Saini, Supreet

doi:10.1016/j.biosystems.2018.01.004

Cited by 8 publications

(4 citation statements)

References 83 publications

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“…aeruginosa have been described leading to a hierarchical activation of these mechanisms [ 79 – 81 ] and also to the synthesis of inductive and inhibitory molecules [ 82 ]. The existence of multiple arrangements between the different mechanisms of quorum sensing might play an important role in processing of environmental cues and thus, dictating necessary and robust collective responses [ 83 ]. Additional studies should be performed in Salmonella to confirm this possible connection.…”

Section: Resultsmentioning

confidence: 99%

N-dodecanoyl-homoserine lactone influences the levels of thiol and proteins related to oxidation-reduction process in Salmonella

et al. 2018

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Quorum sensing is a cell-cell communication mechanism mediated by chemical signals that leads to differential gene expression in response to high population density. Salmonella is unable to synthesize the autoinducer-1 (AI-1), N-acyl homoserine lactone (AHL), but is able to recognize AHLs produced by other microorganisms through SdiA protein. This study aimed to evaluate the fatty acid and protein profiles of Salmonella enterica serovar Enteritidis PT4 578 throughout time of cultivation in the presence of AHL. The presence of N-dodecanoyl-homoserine lactone (C12-HSL) altered the fatty acid and protein profiles of Salmonella cultivated during 4, 6, 7, 12 and 36 h in anaerobic condition. The profiles of Salmonella Enteritidis at logarithmic phase of growth (4 h of cultivation), in the presence of C12-HSL, were similar to those of cells at late stationary phase (36 h). In addition, there was less variation in both protein and fatty acid profiles along growth, suggesting that this quorum sensing signal anticipated a stationary phase response. The presence of C12-HSL increased the abundance of thiol related proteins such as Tpx, Q7CR42, Q8ZP25, YfgD, AhpC, NfsB, YdhD and TrxA, as well as the levels of free cellular thiol after 6 h of cultivation, suggesting that these cells have greater potential to resist oxidative stress. Additionally, the LuxS protein which synthesizes the AI-2 signaling molecule was differentially abundant in the presence of C12-HSL. The NfsB protein had its abundance increased in the presence of C12-HSL at all evaluated times, which is a suggestion that the cells may be susceptible to the action of nitrofurans or that AHLs present some toxicity. Overall, the presence of C12-HSL altered important pathways related to oxidative stress and stationary phase response in Salmonella.

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Section: Resultsmentioning

confidence: 99%

N-dodecanoyl-homoserine lactone influences the levels of thiol and proteins related to oxidation-reduction process in Salmonella

et al. 2018

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“…AI-2 signaling molecule used for interspecific communication was determined here where the communication mechanism of mixed bacteria was either competition or cooperation. Many bacteria had more than one QS system and these systems interact with each other (Prajapat & Saini, 2018), the specific genes and proteins regulated by signal molecules of QS were expressed in multispecies biofilms, but may not be expressed effectively in a single-species biofilm (Periasamy, et al, 2012).…”

Section: Qsi Effect Of Geraniol On Ai-2 Production Of Mixed Bacteriamentioning

confidence: 99%

Geraniol as a Quorum Sensing inhibitor of Erwinia carotovora and Pseudomonas fluorescens isolated from vegetable and their dual‐species biofilm production on stainless steel

Zhang

Xie

et al. 2021

J. Food Process. Preserv.

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Biofilm formation is a serious problem in the food industry due to spoilage bacteria colonization. The main spoilage bacteria of postharvest vegetables are Erwinia and Pseudomonas species (Lone Gram et al., 2002). These bacteria form biofilms on the surface on which they colonize, thereby providing shelter for antimicrobial agents and other sanitation procedures (Claessen et al., 2014;Yu et al., 2021). Biofilm formation is considered a stagewise process. Firstly, planktonic bacteria move to the surface mediated by flagellum, where they may then attach reversibly and the initial adherence of bacterial colonists to a surface is through weak van der Waals forces. After enough cells adhere to the solid surface, the bacteria begin to secrete extracellular substances, such as exopolysaccharide (EPS), to anchor themselves more enduringly. The biofilm can further develop and mature with the protection of the

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“…Virulence of many important pathogens are regulated via Quorum sensing, which is a strategy of bacteria in which communication between cells occurs by using specific signal molecules [19,20]. This strategy is known to play very important role in many bacterial behaviors such as formation of bacterial biofilm, pathogenicity and several virulence factors of different pathogenic bacteria [21,22].…”

Section: Introductionmentioning

confidence: 99%

High Potential Activity of Garlic on Some Physiological Characteristics of Bacteria: Review

Yaseen¹

2023

ijcsrr

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In history, various cultures and civilizations had been applied garlic to prevent infections throughout many centuries. It could be used as raw juice, powders and capsules by means of dietary complements, so it differs from elements of food or conventional foods. It displays antibiotics activities against microorganisms, especially bacterial strains which have become resistant to antibiotics. Therefore, natural origins of antibiotics resemble cheap and effective choice for resistant strains. Because of garlic impressive antimicrobial effectiveness against multiple microbial infections, it is necessary to highlight its role in reduction of some physiological characteristics of bacteria that can cause many infections.

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Logic of two antagonizing intra-species quorum sensing systems in bacteria

Cited by 8 publications

References 83 publications

N-dodecanoyl-homoserine lactone influences the levels of thiol and proteins related to oxidation-reduction process in Salmonella

N-dodecanoyl-homoserine lactone influences the levels of thiol and proteins related to oxidation-reduction process in Salmonella

Geraniol as a Quorum Sensing inhibitor of Erwinia carotovora and Pseudomonas fluorescens isolated from vegetable and their dual‐species biofilm production on stainless steel

High Potential Activity of Garlic on Some Physiological Characteristics of Bacteria: Review

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