Screening for altered high light response of Arabidopsis

Abstract

High light stress suppresses expression of photosysnthesis-related genes including CAB, and activates anti-stress factors like scavengers for reactive oxygen species. We are taking a genetic stragegy in order to understand regulatory mechanisms for transcriptional responses to high light. With the aid of a in vivo monitoring system of high light response, we isolated ca. 30 mutants that show altered response to high light. The mutants were classified into two groups: ones with reduced response and the others with consitutive response.