Keeping a pace with Quorum sensing, analyzing communication shows the close co-evolution of fungi with organisms present in their environment giving insights into multispecies communication. Subsequently, many examples of cell density dependent regulation by extracellular factors have been found in diverse microorganisms. The widespread incidence of diverse quorum-sensing systems strongly sugge...

Quorum sensing is a chemical communication process that bacteria use to regulate collective behaviors. Disabling quorum-sensing circuits with small molecules has been proposed as a potential strategy to prevent bacterial pathogenicity. The human pathogen Pseudomonas aeruginosa uses quorum sensing to control virulence and biofilm formation. Here, we analyze synthetic molecules for inhibition of ...

Single-writer k-quorum protocols achieve high availability without incurring the risk of read operations returning arbitrarily stale values: in particular, they guarantee that, even in the presence of an adversarial scheduler, any read operation will return the value written by one of the last k writes. In this paper, we expand our understanding of k-quorums in two directions: first, we present...

Quorum sensing, a population density-dependent mechanism for bacterial communication and gene regulation, plays a crucial role in the symbiosis between alfalfa and its symbiont Sinorhizobium meliloti. The Sin system, one of three quorum sensing systems present in S. meliloti, controls the production of the symbiotically active exopolysaccharide EPS II. Based on DNA microarray data, the Sin syst...

Cell-cell communication in bacteria is accomplished through the exchange of chemical signal molecules called autoinducers. This process, called quorum sensing, allows bacteria to monitor their environment for the presence of other bacteria and to respond to fluctuations in the number and/or species present by altering particular behaviors. Most quorum-sensing systems are species- or group-speci...

In the problem of k-mutual exclusion, concurrent access to shared resource or the critical section (CS) must be synchronized such that at any time at most k processes can access the CS. In this paper, we propose a generalized grid quorum strategy for k-mutual exclusion, which imposes a logical grid structure on the network. The quorum size is always equal to (M + 1)/(k + 1) × (N + 1)/2 , where ...

Quorum sensing enables bacteria to control the gene expression in response to the cell density. It regulates a variety of bacterial physiological functions such as biofilm formation, bioluminescence, virulence factors and swarming which has been shown contribute to bacterial pathogenesis. The use of quorum sensing inhibitor would be of particular interest in treating bacterial pathogenicity and...

Bacteria are able to sense an increase in cell population density and to respond to it by the induction of a particular set of genes. This mechanism, called quorum sensing, includes in gram-negative bacteria the production and secretion of an acyl homoserine lactone, which diffuses through the cell wall, from the cell to the medium. Bacteria use the quorum sensing mechanism to regulate a variet...

Quorum sensing plays a pivotal role in Pseudomonas aeruginosa's virulence. This paper reviews experimental results on antimicrobial strategies based on quorum sensing inhibition and discusses current targets in the regulatory network that determines P. aeruginosa biofilm formation and virulence. A bioinformatics framework combining literature mining with information from biomedical ontologies a...

This paper presents robust emulation of multi-writer/multi-reader registers in message-passing systems using dynamic quorum conngurations. In addition to processor and link failures, this emulation tolerates changes in quorum conngurations, i.e., on-line replacements of one quorum system consisting of read and write quorums with another such system. This work extends the results of Attiya, Bar-...