Transcriptomic responses of cat2-2 and shr-6 cat2-2 to photorespiratory conditions

ABSTRACT: Hydrogen peroxide (H2O2) is a potent signaling molecule influencing various aspects of plant growth and development. Its limited lifetime and specific production sites in the plant cell necessitate the existence of specialized mechanisms that relay H2O2-encoded information. To discover such mechanisms, we focused on peroxisomal H2O2 production triggered by enhanced photorespiration in Arabidopsis mutants lacking catalase activity (cat2-2), and looked for second-site mutations that attenuate the negative effects (Fv'/Fm' decline and lesion formation) of H2O2 build up. A mutation residing in the GRAS family transcriptional regulator SHORT-ROOT (SHR) was found to underlie the increased performance of cat2-2 knock-outs under photorespiratory stress. In contrast to shr, introduction of the scr

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Cezary Waszczak 

PROVIDER: E-GEOD-66365 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress