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- Title
Protection of photosynthesis and antioxidative system by 24-epibrassinolide in Solanum melongena under cold stress.
- Authors
Wu, X.; He, J.; Zhu, Z.; Yang, S.; Zha, D.
- Abstract
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 °M) and then exposed to day/night temperatures of 10/5 °C for 8 d. The results show that EBR, especially 0.1 °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 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.
- Subjects
PHOTOSYNTHESIS; ANTIOXIDANTS; BRASSINOLIDE; EGGPLANT; PHYSIOLOGICAL effects of cold temperatures; PLANT protection
- Publication
Biologia Plantarum, 2014, Vol 58, Issue 1, p185
- ISSN
0006-3134
- Publication type
Academic Journal
- DOI
10.1007/s10535-013-0377-2