Transcription profiling of control and catalase-deficient Arabidopsis (Arabidopsis thaliana) plants

ABSTRACT: In plants, reactive oxygen species and, more particularly, hydrogen peroxide (H2O2) play a dual role as toxic by-products of normal cell metabolism and as regulatory molecules in stress perception and signal transduction. Peroxisomal catalases are an important sink for photorespiratory H2O2. Using ATH1 Affymetrix microarrays, expression profiles were compared between control and catalase-deficient Arabidopsis (Arabidopsis thaliana) plants. Reduced catalase levels already provoked differences in nuclear gene expression under ambient growth conditions, and these effects were amplified by high light exposure in a sun simulator for 3 and 8 h. This genome-wide expression analysis allowed us to reveal the expression characteristics of complete pathways and functional categories during H2O2 stres

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Wilhelm Gruishem 

PROVIDER: E-MEXP-449 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress