文献类型：期刊文献

英文题名：Involvement of Antioxidative Defense System in Rice Seedlings Exposed to Aluminum Toxicity and Phosphorus Deficiency

作者：Guo Tian-rong[1];Yao Peng-cheng[1];Zhang Zi-dong[1];Wang Jiang-jia[1];Wang Mei[1]

机构：[1]Shaoxing Univ, Life Sci Campus, Shaoxing 312000, Peoples R China

年份：2012

卷号：19

期号：3

起止页码：207

外文期刊名：RICE SCIENCE

收录：ESCI(收录号：WOS:000213871000006)、WOS

基金：This work was supported by the Natural Science Fund of Zhejiang Province, China (Grant No. Y3100450) and the Educative Department of Zhejiang Province, China (Grant No. Z201018672).

语种：英文

外文关键词：aluminum toxicity; phosphorus deficiency; rice; plant growth; oxidative stress

外文摘要：Plants growing in acid soils may suffer both phosphorus (P) deficiency and aluminum (Al) toxicity. Hydroponic experiments were undertaken to assess the single and combination effects of Al toxicity and low P stress on seedling growth, chlorophyll and proline contents, antioxidative response and lipid peroxidation of two rice genotypes (Yongyou 8 and Xiushui 132) differing in Al tolerance. Al toxicity and P deficiency both inhibited rice seedling growth. The development of toxic symptoms was characterized by reduced chlorophyll content, increased proline and malondialdehyde contents in both roots and leaves, and increased peroxidase and superoxide dismutase activities in roots, but decreased in leaves. The stress condition induced more severe growth inhibition and oxidative stress in Yongyou 8, and Xiushui 132 showed higher tolerance to both Al toxicity and P deficiency. P deficiency aggravated Al toxicity to plant growth and induced more severe lipid peroxidation.