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Identification of a drought-induced rice gene, OsSAP, that suppresses Bax-induced cell death in yeast |
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| Authors: | Mohammad Ubaidillah Kyung-A Kim Yoon Ha Kim In-Jung Lee Byung-Wook Yun Doh Hoon Kim Gary J Loake Kyung-Min Kim |
| Institution: | 1. Division of Plant Biosciences, School of Applied BioSciences, College of Agriculture and Life Science, Kyungpook National University, Taegu, 702-701, Korea 2. Department of Biology, College of Natural Sciences, Kyungpook National University, Taegu, 702-701, Korea 3. College of Life Science and Natural Resources, Dong-A University, Pusan, 604-714, Korea 4. Institute of Molecular Plant Sciences, The University of Edinburgh, Daniel Rutherford Buildings, Mayfield Road, Edinburgh, EH9 3JR, UK |
| Abstract: | We identified rice genes that might be involved in drought stress tolerance by virtue of their anti-apoptotic activity. Potential anti-apoptosis related genes were identified by screening an Oryza sativa cDNA library derived from drought stressed tissues in a yeast functional assay. About 28 O. sativa cDNAs promoted yeast survival following engagement of Bax-induced apoptosis. An O. sativa cDNA encoding R12H780 was a highly conserved putative senescence-associated-protein (OsSAP). OsSAP was both highly and rapidly expressed in response to drought stress. Additionally, OsSAP was found to be localized to the mitochondria. Overall, OsSAP represents a new type of Bax suppressor related gene and endows multiple stress tolerance in yeast. |
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