UV-B signaling in maize: transcriptomic and metabolomic studies at different irradiation times.

ABSTRACT: Plants have evolved adaptations to environmental factors, including UV-B present in solar radiation. Deployment of specific adaptive phenotypes to avoid or repair UV-B damage requires physiological and developmental acclimation to variable UV-B fluence. To gain a better understanding of the events in UV-B acclimation, we have analyzed a 5min to 6h time course of transcriptome and metabolome responses in irradiated and shielded leaves and in immature maize ears to unravel the systemic physiological and developmental responses in exposed and shielded organs. Within 10 min of UV-B exposure, transcripts are changed not only in irradiated leaves, but also in shielded tissues. The number of UV-B-regulated transcripts rapidly increases with exposure length. Interestingly, after 10 min of exposure

SUBMITTER: Casati P 

PROVIDER: S-EPMC3337180 | biostudies-literature | 2011 Dec

REPOSITORIES: biostudies-literature