The role of MorI/MorR quorum sensing in <i>Methylobacterium oryzae</i> CBMB20: modulating bacterial functions for enhanced adaptability.

ABSTRACT: The quorum-sensing (QS) system in Methylobacterium oryzae CBMB20, an endophytic bacterium associated with rice (Oryza sativa L.), plays a critical role in regulating bacterial behaviors essential for plant growth promotion and adaptation. This study aimed to elucidate the functional role of the MorI/MorR QS system in M. oryzae CBMB20 and its potential application as a bioinoculant. We identified and characterized two QS signals, 3-OH-C12-HSL and 3-oxo-C12-HSL, synthesized by the MorI enzyme. The MorR receptor was found to preferentially respond to 3-OH-C12-HSL, indicating a high degree of specificity in QS signaling. The deletion mutants of morI and morR exhibited significant changes in exopolysaccharides (EPS), motility, and methanol utilization, suggest

SUBMITTER: Deng Q 

PROVIDER: S-EPMC12502750 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature