Transcriptomics

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Gene expression from Arabidopsis under high light conditions


ABSTRACT: We have investigated the genomic response of Arabidopsis cell suspension culture under high light. Our main goal has been twofold: first, to establish whether chloroplasts in Arabidopsis cell suspension culture are functional and, as such, can act as sensors of adverse external stimuli leading to the activation of genomic defence responses in a manner similar to that described in whole plants exposed to a wide range of environmental stresses and; second, to distinguish which of the ROS that would be probably generated in the chloroplasts is predominant. Our functional genomic analysis has led us to conclude that singlet oxygen is the major ROS in Arabidopsis cell suspension culture under high light stress and that singlet oxygen production is responsible for a genomic activation associated with the biosynthesis and signalling pathway of several phytohormones that ultimately triggers accelerated cell death.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE22671 | GEO | 2011/05/05

SECONDARY ACCESSION(S): PRJNA127985

REPOSITORIES: GEO

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