Signal Production and Response Specificity in the Quorum Sensing Systems of Species Complex.

strains are devastating plant pathogens with global distribution, a wide host range, and genetic diversity, and they are now also referred to as the species complex (RSSC). RSSC strains employ the quorum sensing (QS) system composed of the operon to regulate their virulence on plants. The RSSC strains previously examined produce either ()-methyl 3-hydroxymyristate (3-OH MAME) or ()-methyl 3-hydroxypalmitate (3-OH PAME) as their QS signals.

Contribution of a lectin, LecM, to the quorum sensing signalling pathway of Ralstonia solanacearum strain OE1-1.

The soil-borne bacterium Ralstonia solanacearum invades the roots and colonizes the intercellular spaces and then the xylem. The expression of lecM, encoding a lectin LecM, is induced by an OmpR family response regulator HrpG in R. solanacearum strain OE1-1.