In contrast, the ROS scavenging enzymes namely ascorbate peroxidases, catalase, alternative oxidase, glutathione S-transferase (GST), aldehyde dehydrogenase, superoxide dismutase and NADPH: quinonereductase showed repressed activities in initial stages of infection at 6 and 12 hpi but were up-regulated at later stages of interactions. Here, CAT is linked to infection.