A pepper MSRB2 gene confers drought tolerance in rice through the protection of chloroplast-targeted genes.

ABSTRACT:

Background

The perturbation of the steady state of reactive oxygen species (ROS) due to biotic and abiotic stresses in a plant could lead to protein denaturation through the modification of amino acid residues, including the oxidation of methionine residues. Methionine sulfoxide reductases (MSRs) catalyze the reduction of methionine sulfoxide back to the methionine residue. To assess the role of this enzyme, we generated transgenic rice using a pepper CaMSRB2 gene under the control of the rice Rab21 (responsive to ABA protein 21) promoter with/without a selection marker, the bar gene.

Results

A drought resistance test on transgenic plants showed that CaMSRB2 confers drought tolerance to rice, as evidenced by less oxidative stress symptoms and a strengthened PSII quantum yiel

SUBMITTER: Kim JS 

PROVIDER: S-EPMC3948683 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature