Involvement of genes encoding ABI1 protein phosphatases in the response of Brassica napus L. to drought stress.

ABSTRACT: In this report we characterized the Arabidopsis ABI1 gene orthologue and Brassica napus gene paralogues encoding protein phosphatase 2C (PP2C, group A), which is known to be a negative regulator of the ABA signaling pathway. Six homologous B. napus sequences were identified and characterized as putative PP2C group A members. To gain insight into the conservation of ABI1 function in Brassicaceae, and understand better its regulatory effects in the drought stress response, we generated transgenic B. napus plants overexpressing A. thaliana ABI1. Transgenic plants subjected to drought showed a decrease in relative water content, photosynthetic pigments content and expression level of RAB18- and RD19A-drought-responsive marker genes relative to WT plants. We present the characterization of the

SUBMITTER: Babula-Skowronska D 

PROVIDER: S-EPMC4486095 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature