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

  • Brief Communication
  • Published:
Biologia Plantarum

Abstract

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.

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Abbreviations

APX:

ascorbate peroxidase

AsA:

ascorbic acid

BRs:

brassinosteroids

CAT:

catalase

DTNB:

5-5′dithiobis (2-nitrobenzoic acid)

EBR:

24-epibrassinolide

GSH:

reduced glutathione

MDA:

malondialdehyde

NBT:

nitroblue tetrazolium

POD:

guaiacol peroxidase

ROS:

reactive oxygen species

SOD:

superoxide dismutase

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Authors and Affiliations

  1. College of Biosciences and Biotechnology, Yangzhou University, Yangzhou, 225009, China

    H. -D. Ding & X. -H. Zhu

  2. Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China

    H. -D. Ding, Z. -W. Zhu, S. -J. Yang, D. -S. Zha & X. -X. Wu

  3. Shanghai Key Lab of Protected Horticultural Technology, Shanghai, 201106, China

    X. -X. Wu

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  1. H. -D. Ding
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  2. X. -H. Zhu
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  3. Z. -W. Zhu
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  4. S. -J. Yang
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  6. X. -X. Wu
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Correspondence to X. -X. Wu.

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Acknowledgements: This work was supported by Natural Science Foundation of the Higher Education Institutions of Jiangsu Province (Grant No. 10KJB180010), the National Natural Science Foundation of China (No. 31101092), the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, the Natural Science Foundation of Shanghai (No. ZR1426800) and the Shanghai Municipal Committee of Agriculture (2009-2-1).

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Ding, H.D., Zhu, X.H., Zhu, Z.W. et al. Amelioration of salt-induced oxidative stress in eggplant by application of 24-epibrassinolide. Biol Plant 56, 767–770 (2012). https://doi.org/10.1007/s10535-012-0108-0

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  • DOI: https://doi.org/10.1007/s10535-012-0108-0

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