Cytokinin Plays a Multifaceted Role in Ralstonia solanacearum-Triggered Plant Disease Development.

ABSTRACT: Cytokinin signalling plays both positive and negative roles in plant resistance to pathogens. It is not clear whether the role of cytokinin changes at the different stages of pathogen infection. Arabidopsis thaliana sequentially exhibits distinct root morphological symptoms during Ralstonia solanacearum infection, which offers a good system to investigate function of cytokinin in the whole pathogen infection process. Using this system, we found increase of cytokinin signalling by Lonely Guy 2 (LOG2) overexpression or depletion of type-A Arabidopsis Response Regulators (ARRs), negative regulators of cytokinin signalling pathway, promoted cell death, wilting symptom and bacterial growth, but attenuated primary root growth inhibition and lateral root formation. The decrease of cytokinin signa

SUBMITTER: Wang X 

PROVIDER: S-EPMC11671236 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature