Involvement of hydrogen peroxide in heat shock- and cadmium- induced expression of ascorbate peroxidase and glutathione reducatse in leaves of rice seedlings.

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題 Involvement of hydrogen peroxide in heat shock- and cadmium- induced expression of ascorbate peroxidase and glutathione reducatse in leaves of rice seedlings.
出版類型SCI(Sciences Citation Index)
出版年度2012
AuthorsTing-Shao Chou, 周庭卲, Yun-Yang Chao 趙雲洋, & Ching-Huei Kao 高景輝
開始頁478
頁數8
出版日期2012 / 3
其他編號0000
中文摘要

Hydrogen peroxide (H2O2) is considered a signal molecule inducing cellular stress. Both heat shock (HS) and Cd can increase H2O2 content. We investigated the involvement of H2O2 in HS- and Cd-mediated changes in the expression of ascorbate peroxidase (APX) and glutathione reductase (GR) in leaves of rice seedlings. HS treatment increased the content of H2O2 before it increased activities of APX and GR in rice leaves. Moreover, HS-induced H2O2 production and APX and GR activities could be counteracted by the NADPH oxidase inhibitors dipehenylene iodonium (DPI) and imidazole (IMD). HS-induced OsAPX2 gene expression was associated with HS-induced APX activity but was not regulated by H2O2. Cd-increased H2O2 content and APX and GR activities were lower with than without HS. Cd did not increase the expression of OsAPX and OsGR without HS treatment. Cd increased H2O2 content by Cd before it increased APX and GR activities without HS. Treatment with DPI and IMD effectively inhibited Cd-induced H2O2 production and APX and GR activities. Moreover, the effects of DPI and IMD could be rescued with H2O2 treatment. H2O2 may be involved in the regulation of HS- and Cd-increased APX and GR activities in leaves of rice seedlings.

網址http://www.sciencedirect.com/science/article/pii/S0176161711004883
期刊名稱J Plant Physiol
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