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题名: Effects of Perchlorate Stress on Growth and Physiological Characteristics of Rice (Oryza sativa L.) Seedlings
作者: Xie, Yinfeng1; Tao, Gongsheng2; Chen, Qian3; Tian, Xueyao1
刊名: WATER AIR AND SOIL POLLUTION
关键词: Perchlorate stress ; Growth ; Physiology ; Olyza saliva L
英文摘要: Effects of perchlorate stress on the growth and physiological characteristics of rice (Oryza swim L.) were studied in controlled water culture experiments. Perchlorate stress resulted in varied patterns of biomass allocation to O. saliva organs (roots, stems, and leaves). When stressed with higher perchlorate concentrations, the proportion of root biomass was higher, stem biomass was invariant, while leaf biomass was lower. Coefficients of variation in biomass of different organs followed the order leaf>stem>root, indicating that leaf growth has a higher sensitivity to perchlorate. Compared to the control, the chlorophyll and protein content of leaves and root vigor were lower, whereas malondialdehyde (MDA) content and catalase (CAT) activity were higher and related to perchlorate concentration and duration of stress. Superoxide dismutase (SOD) activity was initially high and then decreased markedly during the experiment, while peroxidase (PDX) activity in perchlorate-treated rice was always higher than the PDX activity of the control. PDX was the most sensitive antioxidant enzyme to perchlorate stress. Correlation analysis showed a positive correlation between SOD activity and the fresh weight of the whole plant, and negative conelation with MDA content. The results suggest that perchlorate could induce oxidative stress and oxidative damage may be the main cause of physiological damage and growth inhibition in rice plants under perchlorate stress.
出版日期: 2014-08-01
卷号: 225, 期号:8, 页码:2077
DOI标识: 10.1007/s11270-014-2077-8
语种: 英语
ISSN号: 0049-6979
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/18322
Appears in Collections:中国西南野生生物种质资源库_期刊论文

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作者单位: 1.Nanjing Forestry Univ, Coll Forest Resources & Environm, Nanjing 210037, Jiangsu, Peoples R China
2.Tongcheng Teachers Coll, Dept Sci & Technol, Tongcheng 231400, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Peoples R China

Recommended Citation:
Xie,Yinfeng;Tao,Gongsheng;Chen,Qian;Tian,Xueyao.Effects of Perchlorate Stress on Growth and Physiological Characteristics of Rice (Oryza sativa L.) Seedlings,WATER AIR AND SOIL POLLUTION,2014,225(8):2077
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