Differential Expression of Two Cytosolic Ascorbate Peroxidases and Two Superoxide Dismutase Genes in Response to Abiotic Stress in Rice

作     者：Shigeto MORITA Shinya NAKATANI Tomokazu KOSHIBA Takehiro MASUMURA Yasunari OGIHARA Kunisuke TANAKA 

作者机构：Laboratory of Genetic Engineering Graduate School of Life and Environmental Sciences Kyoto Prefectural University Basic Research Division Kyoto Prefectural Institute of Agricultural Biotechnology Department of Biological Sciences Tokyo Metropolitan University Kihara Institute for Biological Research Yokohama City University 

出 版 物：《Rice science》 (水稻科学（英文版）)

年 卷 期：2011年第18卷第3期

页      面：157-166页

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the Grants-in-Aid for Scientific Research (Grant No. 10460149 to K.T. and Grant No. 11740448 to S.M.) from the Ministry of Education, Culture, Sports, Science and Technology of Japan a grant from the Rice Genome Research Program (Grant No. MP2106 to K.T.) from the Ministry of Agriculture, Forestry and Fisheries of Japan 

主　　题：ascorbate peroxidase superoxide dismutase reactive oxygen species abiotic stress rice 

摘      要：Superoxide dismutase (SOD) and ascorbate peroxidase (APX) play central roles in the pathway for scavenging reactive oxygen species in plants, thereby contributing to the tolerance against abiotic stress. Here we report the responses of cytosolic SOD (cSOD; sodCc1 and sodCc2) and cytosolic APX (cAPX; OsAPX1 and OsAPX2) genes to oxidative and abiotic stress in rice. RNA blot analyses revealed that methyl viologen treatment caused a more prominent induction of cAPXs compared with cSODs, and hydrogen peroxide treatment induced the expression of cAPXs whereas cSODs were not affected. These results suggest that cAPXs play more important roles in defense against oxidative stress compared with cSODs. It is noted that cSODs and cAPXs showed coordinate response to abscisic acid treatment which induced both sodCc1 and OsAPX2. However, cSODs and cAPXs responded differentially to drought, salt and chilling stress, which indicates that cSOD and cAPX genes are expressed differentially in response to oxidative and abiotic stress in rice.