A secreted catalase contributes to Puccinia striiformis resistance to host-derived oxidative stress.

ABSTRACT: Plants can produce reactive oxygen species (ROS) to counteract pathogen invasion, and pathogens have also evolved corresponding ROS scavenging strategies to promote infection and pathogenicity. Catalases (CATs) have been found to play pivotal roles in detoxifying H₂O₂ formed by superoxide anion catalyzed by superoxide dismutases (SODs). However, few studies have addressed H₂O₂ removing during rust fungi infection of wheat. In this study, we cloned a CAT gene PsCAT1 from Puccinia striiformis f. sp. tritici (Pst), which encodes a monofunctional heme-containing catalase. PsCAT1 exhibited a high degree of tolerance to pH and temperature, and forms high homopolymers.Heterologous complementation assays in Saccharomyces cerevisiae reveal that the signal

SUBMITTER: Yuan P 

PROVIDER: S-EPMC10441885 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature