Protection of photosynthesis and antioxidative system by 24-epibrassinolide in Solanum melongena under cold stress
文献类型: 外文期刊
第一作者: Wu, X. X.
作者: Wu, X. X.;Zha, D. S.;Wu, X. X.;Zhu, Z. W.;Yang, S. J.;Zha, D. S.;He, J.
作者机构:
关键词: ascorbate peroxidase;catalase;brassinosteroids;low temperature;malondialdehyde;oxidative stress;peroxidase;Solanum melongena;superoxide dismutase
期刊名称:BIOLOGIA PLANTARUM ( 影响因子:1.747; 五年影响因子:2.146 )
ISSN: 0006-3134
年卷期: 2014 年 58 卷 1 期
页码:
收录情况: SCI
摘要: This study was carried out to understand the mechanism of protection of plants under cold stress by exogenous 24-epibrassinolide (EBR). The eggplant (Solanum melongena L.) seedlings were pretreated with five concentrations of EBR (0, 0.05, 0.1, 0.2 and 0.4 mu M) and then exposed to day/night temperatures of 10/5 degrees C for 8 d. The results show that EBR, especially 0.1 mu M EBR, dramatically alleviated growth suppression and a decrease in chlorophyll content and photosynthetic rate caused by the cold stress. In addition, EBR also decreased malondialdehyde content and O-2(center dot-) production rate induced by the cold stress, and increased the activities of superoxide dismutase, guaiacol peroxidase, catalase, and ascorbate peroxidase, and proline content. The results of the present study suggest that exogenous EBR could improve cold tolerance of eggplant by regulating photosynthesis and antioxidative systems.
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