Quorum-quenching halotolerant bacteria as biocontrol agents against potato phytopathogens.

ABSTRACT: Potato is highly susceptible to phytopathogens such as Dickeya solani, Pectobacterium atrosepticum and P. carotovorum, which cause an oxidative stress in the vegetal tissues, promote necrosis, and ultimately compromise postharvest quality. In many Gram-negative bacteria, virulence is regulated by quorum sensing (QS) via N-acyl homoserine lactones (AHLs). Quorum quenching (QQ), the enzymatic degradation of AHLs, has emerged as a promising biocontrol strategy. This study evaluated the biocontrol potential of two halotolerant bacterial strains, Pseudomonas kilonensis B34 and Psychrobacter sp. B38, capable of partially degraded AHLs produced by these phytopathogens. Co-cultures of these QQ strains with the mentioned pathogens significantly reduced tissue maceration in potato tubers, with stron

SUBMITTER: Sanchez P 

PROVIDER: S-EPMC12855182 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature