期刊
BIOLOGIA PLANTARUM
卷 58, 期 1, 页码 185-188出版社
ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
DOI: 10.1007/s10535-013-0377-2
关键词
ascorbate peroxidase; catalase; brassinosteroids; low temperature; malondialdehyde; oxidative stress; peroxidase; Solanum melongena; superoxide dismutase
资金
- China Earmarked Fund for Modern Agro-industry Technology Research System [CARS-25-G-12]
- Shanghai Committee of Science and Technology [123919N0200]
- Shanghai Key Lab of Protected Horticultural Technology
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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