The Ralstonia solanacearum catalase-peroxidase KatG is crucial to survive environmental stresses and also plays a role in plant infection.

ABSTRACT: Throughout their life cycle, pathogens are challenged by Reactive Oxygen Species (ROS) and must deploy defence mechanisms against oxidative damage. Environmental stressors such as ultraviolet radiation and desiccation induce intracellular ROS production. Moreover, during pathogen colonisation, plant hosts initiate an oxidative burst, leading to the accumulation of hydrogen peroxide (H₂O₂). Catalases mitigate ROS toxicity by catalysing the breakdown of H₂O₂ into water and oxygen. In this study, we explored the roles of the monofunctional catalase (KatE) and the bifunctional catalase-peroxidase (KatG) in the phytopathogen Ralstonia solanacearum during both environmental stress conditions and in planta colonisation stages. Our results demonstrate th

SUBMITTER: Corral J 

PROVIDER: S-EPMC12508222 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature