BACKGROUND AND OBJECTIVES There is increasing emergence of multidrug resistant Pseudomonas aeruginosa (MDRPA) strains and drug resistance is positively-correlated with biofilm-forming ability. Since about 10% of P. aeruginosa genome is controlled by quorum sensing (QS), alteration in its antibiotic susceptibility by targeting QS was the focus of the present study. MATERIALS AND METHODS One da...

Acinetobacter baumannii is an important pathogen that causes nosocomial infections generally associated with high mortality and morbidity in Intensive Care Units (ICUs). Currently, little is known about the Quorum Sensing (QS)/Quorum Quenching (QQ) systems of this pathogen. We analyzed these mechanisms in seven clinical isolates of A. baumannii. Microarray analysis of one of these clinical isol...

1 UPMC Univ Paris 06, Laboratoire de Biodiversité et Biotechnologies Microbiennes, Centre National De La Recherche Scientifique (CNRS), Observatoire Océanologique, Sorbonne Universités, Banyuls-sur-Mer, France, 2 Unité Molécules de Communication et Adaptation des Micro-organismes (UMR 7245), Sorbonne Universités, Muséum National d’Histoire Naturelle, Centre National De La Recherche Scientifique...

Rhodococcus erythropolis strain R138 was isolated from the rhizosphere of Solanum tuberosum and selected for its capacity to degrade N-acyl-homoserine lactones, quorum-sensing signals used as communication molecules by the potato pathogens Pectobacterium and Dickeya. Here, we report the genome sequence of Rhodococcus erythropolis strain R138.

Agrobacterium tumefaciens strain WRT31 is a quorum-sensing signal-degrading bacterium that has been isolated from the rhizosphere of tobacco plants. This strain belongs to A. tumefaciens genomovar G1, is avirulent on various putative host plants, devoid of Ti plasmid, and contains the blcC gene encoding a gamma-butyrolactonase.

Although optoelectronic devices made of polymers are very attractive ones (low cost, easy to make), problems related to charge transport, exciton quenching, among others, can be an obstacle for their performance. The use of heterojunctions made of two polymers can be a strategy for improving the efficiency of polymer light emitting diodes (PLEDs) at low bias. Here we present a theoretical study...