Involvement of glutathione in heat shock- and hydrogen peroxide-induced cadmium tolerance of rice (Oryzasativa L.) seedlings. | Faculty Open Information System

Involvement of glutathione in heat shock- and hydrogen peroxide-induced cadmium tolerance of rice (Oryzasativa L.) seedlings.

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Involvement of glutathione in heat shock- and hydrogen peroxide-induced cadmium tolerance of rice (Oryzasativa L.) seedlings.
出版類型SCI(Sciences Citation Index)
出版年度2009
AuthorsYun-Yang Chao, 趙雲洋, Yi-Ting Hsu 許奕婷, & Ching-Huei Kao 高景輝
開始頁37
頁數8
出版日期2009 / 5
其他編號0000
中文摘要

The role of reduced glutathione (GSH) in heat shock (HS)- and H2O2-induced protection of rice
(Oryza sativa L., cv. Taichung 1) seedlings from Cd stress was investigated. HS- and H2O2-pretreatment resulted in an increase in GSH content in leaves of rice seedlings. Addition of exogenous GSH under non-HS conditions, which resulted in an increase in GSH in leaves, enhanced subsequent Cd tolerance of rice seedlings. Pretreatment with buthionine sulfoximine (BSO), a specific inhibitor of GSH synthesis, which effectively inhibited GSH content induced by HS and
H2O2, reduced subsequent Cd tolerance. Furthermore, the effect of BSO on HS- and H2O2-induced GSH accumulation and toxicity by subsequent Cd stress can be reversed by the addition of GSH. The time-course analyses of HS in rice seedlings demonstrated that the accumulation of H2O2 preceded the increase in GSH. Based on the data obtained in this study, it could be concluded that the early accumulation of H2O2 during HS signals the increase in GSH content, which in turn
protects rice seedlings from oxidative damage caused by Cd.

網址http://link.springer.com/article/10.1007%2Fs11104-008-9815-x
期刊名稱Plant Soil
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