Ascorbate peroxidase 1 plays a key role in the response of Arabidopsis thaliana to stress combination.

ABSTRACT: Within their natural habitat plants are subjected to a combination of different abiotic stresses, each with the potential to exacerbate the damage caused by the others. One of the most devastating stress combinations for crop productivity, which frequently occurs in the field, is drought and heat stress. In this study we conducted proteomic and metabolic analysis of Arabidopsis thaliana plants subjected to a combination of drought and heat stress. We identified 45 different proteins that specifically accumulated in Arabidopsis in response to the stress combination. These included enzymes involved in reactive oxygen detoxification, malate metabolism, and the Calvin cycle. The accumulation of malic enzyme during the combined stress corresponded with enhanced malic enzyme activity, a decrease

SUBMITTER: Koussevitzky S 

PROVIDER: S-EPMC2590703 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature