Selenium tolerance of an Arabidopsis drought-resistant mutant csm1-1

Selenium tolerance of an Arabidopsis drought-resistant mutant csm1-1 We isolated the Arabidopsis drought-resistant mutant csm1-1 and cloned the CSM1 gene (previously called RCI3) which encodes a kind of peroxidase. In this study, we showed that the mutant csm1-1 was more tolerant to selenium (Se) stress than the wild-type, and that the mutant csm1-1 accumulated similar Se content compared with the wild-type when subjected to Se stress. Further analysis revealed that the Se resistance of mutant csm1-1 was associated, at least in part, with the enhanced activities of antioxidant enzymes GSH-POD (glutathione peroxidase) and POD (peroxidase). In addition, enhanced Se resistance of the mutant csm1-1 was partially GSH dependent, which was related to the higher expression level of GSH1 gene involved in GSH synthesis and consequently increased GSH content. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Selenium tolerance of an Arabidopsis drought-resistant mutant csm1-1

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Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S102144371505009X
Publisher site
See Article on Publisher Site

Abstract

We isolated the Arabidopsis drought-resistant mutant csm1-1 and cloned the CSM1 gene (previously called RCI3) which encodes a kind of peroxidase. In this study, we showed that the mutant csm1-1 was more tolerant to selenium (Se) stress than the wild-type, and that the mutant csm1-1 accumulated similar Se content compared with the wild-type when subjected to Se stress. Further analysis revealed that the Se resistance of mutant csm1-1 was associated, at least in part, with the enhanced activities of antioxidant enzymes GSH-POD (glutathione peroxidase) and POD (peroxidase). In addition, enhanced Se resistance of the mutant csm1-1 was partially GSH dependent, which was related to the higher expression level of GSH1 gene involved in GSH synthesis and consequently increased GSH content.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Aug 14, 2015

References

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