Amelioration of salt-induced oxidative stress in eggplant by application of 24-epibrassinolide
2012
Ding, H.D., Yangzhou Univ. (China). Fostering Base for National Key Lab. of Crop Genetics and Physiology | Zhu, X.H., Yangzhou Univ. (China). Fostering Base for National Key Lab. of Crop Genetics and Physiology | Zhu, Z.W., Shanghai Academy of Agricultural Sciences (China). Horticultural Research Inst. | Yang, S.J., Shanghai Academy of Agricultural Sciences (China). Horticultural Research Inst. | Zha, D.S., Shanghai Academy of Agricultural Sciences (China). Horticultural Research Inst. | Wu, X.X., Shanghai Academy of Agricultural Sciences (China). Horticultural Research Inst.
The effects of exogenous 24-epibrassinolide (EBR) on the growth, oxidative damage, antioxidant system and ion contents in Solanum melongena seedlings under salt stress were investigated. Eggplant seedlings were exposed to 90 mM NaCl with 0, 0.025, 0.05, 0.10 and 0.20 mg/cubic dm EBR for 10 d. EBR, especially at concentration 0.05 mg/cubic dm, alleviated growth suppression caused by NaCl stress, decreased electrolyte leakage, superoxide production and concentrations of malondialdehyde and H2O2 in NaCl-treated plants. EBR also increased activities of superoxide dismutase, guaiacol peroxidase, catalase and ascorbate peroxidase and the contents of ascorbic acid and reduced glutathione. Furthermore, we also found that Na+, Cl- concentrations were decreased, K+, Ca2+ concentrations and K+/Na+, Ca2+/Na+ ratios were increased in the presence of EBR under salt stress.
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