Biologia plantarum 2012, 56:767-770 | DOI: 10.1007/s10535-012-0108-0

Amelioration of salt-induced oxidative stress in eggplant by application of 24-epibrassinolide

H. -D. Ding1,2, X. -H. Zhu1, Z. -W. Zhu2, S. -J. Yang2, D. -S. Zha2, X. -X. Wu2,3,*
1 College of Biosciences and Biotechnology, Yangzhou University, Yangzhou, China
2 Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
3 Shanghai Key Lab of Protected Horticultural Technology, Shanghai, China

The effects of exogenous 24-epibrassinolide (EBR) on the growth, oxidative damage, antioxidant system and ion contents in eggplant (Solanum melongena L.) 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 dm-3 EBR for 10 d. EBR, especially at concentration 0.05 mg dm-3, alleviated growth suppression caused by NaCl stress, decreased electrolyte leakage, superoxide production and content 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- contents were decreased, K+, Ca2+ contents and K+/Na+, Ca2+/Na+ ratios were increased in the presence of EBR under salt stress.

Keywords: ascorbate peroxidase; ascorbic acid; catalase; brassinosteroids; elecrolyte leakage; glutathione; guaiacol peroxidase; ion balance; reactive oxygen species; Solanum melongena; superoxide dismutase
Subjects: brassinosteroids; NaCl; ascorbate; ascorbate peroxidase; catalase; electrolyte leakage; glutathione; peroxidases; reactive oxygen species; superoxide dismutase; hydrogen peroxide; malondialdehyde; sodium; potassium; calcium
Species: Solanum melongena

Received: August 30, 2010; Accepted: October 5, 2011; Published: December 1, 2012Show citation

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Ding, H.-D., Zhu, X.-H., Zhu, Z.-W., Yang, S.-J., Zha, D.-S., & Wu, X.-X. (2012). Amelioration of salt-induced oxidative stress in eggplant by application of 24-epibrassinolide. Biologia plantarum, 56(4), 767-770. doi: 10.1007/s10535-012-0108-0.
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