Effect of nitrogen deficiency on antioxidant status and Cd toxicity in rice. | Faculty Open Information System

Effect of nitrogen deficiency on antioxidant status and Cd toxicity in rice.

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Effect of nitrogen deficiency on antioxidant status and Cd toxicity in rice.
出版類型SCI(Sciences Citation Index)
出版年度2011
AuthorsYa-Lin Lin, 林雅琳, Yun-Yang Chao 趙雲洋, Wen-Dar Huang 黃文達, & Ching-Huei Kao 高景輝
開始頁263
頁數10
出版日期2011 / 7
其他編號0000
中文摘要

Effect of nitrogen (N) deficiency on antioxidant status and Cd toxicity in rice seedlings was investigated. N deficiency resulted in a reduction of shoot growth but not root growth. The contents of N-containing compounds such as nitrate, chlorophyll, and protein decreased in leaves of rice seedlings grown under N deficiency. Accumulation of abscisic acid and H2O2 in leaves was induced by N deficiency. The content of ascorbate and the activities of ascorbate peroxidase, glutathione reductase, and catalase in N-deficient leaves were lower than their respective control leaves. However, glutathione content was not affected and superoxide dismutase activity was increased by N deficiency. Cd toxicity in N-deficient seedlings was more pronounced than that in N-sufficient ones. Pretreatment with ascorbate or L-galactono-1,4-lactone, a biosynthetic precursor of ascorbate resulted in a reduction of Cd toxicity enhanced by N deficiency. N deficiency also resulted in an enhancement of Cd uptake in rice seedlings. The possible mechanism of Cd toxicity enhanced by N deficiency is discussed.

網址http://link.springer.com/article/10.1007%2Fs10725-011-9567-0
期刊名稱 Plant Growth Regul
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