Signaling among rhizobacteria and other soil microorganisms is an important mechanism to ensure a successful symbiotic relationship with their phytobionts. Quorum-sensing involves signaling molecules that provide essential networks for communication in the rhizosphere. These relay inter-and-intra-species information coordinates controls behavior mixed communities, expression of these changes re...

We have studied the response of excitons in a multiple quantum well structure under the presence of intense midinfrared fields. Peak fields (∼10 V/cm, in the plane of quantum wells) that would cause exciton quenching at low frequencies (up to ∼ GHz) are observed to have no significant quenching effect on the exciton resonance when applied at ∼100 THz. We attribute this lack of quenching to the ...

Bacteria control gene expression by quorum sensing (QS) mechanism owing to producing small signal molecules associated with population density. Both gram-positive and gram-negative bacteria use QS manage various physiological characteristics, including bioluminescence, virulence expression, biofilm formation, antibiotic resistance. Impatience balsamina is a flowering, perennial annual herb indi...

BACKGROUND Quorum sensing is the key regulator of virulence factors of Pseudomonas aeruginosa such as biofilm formation, motility, productions of proteases, hemolysin, pyocyanin, and toxins. The aim of this study was to explore the effect of the extracts from some medicinal plants on quorum sensing and related virulence factors of P. aeruginosa. MATERIAL AND METHODS Quorum sensing inhibitory ...