Differential responses of lipid peroxidation and antioxidants in Alternanthera philoxeroides and Oryza sativa subjected to drought stress
文献类型: 外文期刊
作者: Gao, Jianming 1 ; Xiao, Qiang 1 ; Ding, Liping 1 ; Chen, Mingjie 1 ; Yin, Liang 1 ; Li, Jinzhi 1 ; Zhou, Shiyi 1 ; He, Gu 1 ;
作者机构: 1.Huazhong Univ Sci & Technol, China UK HUST RRes Genet Engn & Genom Joint Lab, Wuhan 430074, Peoples R China
2.Chinese Acad Trop Agr Sci, Inst Trop Biotechnol, Haikou 571101, Peoples R China
关键词: Alternanthera philoxeroides;antioxidants;drought;peroxidation;Oryza sativa;SUPEROXIDE-DISMUTASE;OXIDATIVE DAMAGE;GLYCINE BETAINE;TRANSGENIC RICE;PLANTS;TOLERANCE;SALT;CATALASE;PROLINE;EXPRESSION
期刊名称:PLANT GROWTH REGULATION ( 影响因子:3.412; 五年影响因子:3.691 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: To evaluate oxidative stress and the plant antioxidant system of Alternanthera philoxeroides [Mart.] Griseb and Oryza sativa L. in the response to drought, root and leaf tissues of drought-treated A. philoxeroides and O. sativa were collected and relative water content, stomatal conductance, the concentrations of malondialdehyde, proline and the activities of superoxide dismutase, peroxidases, catalase and total antioxidative activity investigated. The results showed that drought treatment had almost no effect on relative water content in A. philoxeroides but reduced relative water content in O. sativa. A. philoxeroides maintained a greater stomatal conductance than O. sativa under drought stress. In A. philoxeroides levels of lipid peroxidation were lower than in O. sativa and did not change during the experiment. After exposure to drought, concentrations of proline and activities of superoxide dismutase, peroxidases and catalase in A. philoxeroides were between 10% and 30% higher than in O. sativa, whereas total antioxidative activity in A. philoxeroides was several-fold higher than in O. sativa.
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