Biologia Plantarum

, Volume 56, Issue 4, pp 767–770 | Cite as

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

  • H. -D. Ding
  • X. -H. Zhu
  • Z. -W. Zhu
  • S. -J. Yang
  • D. -S. Zha
  • X. -X. Wu
Brief Communication
First Online:
Received:
Accepted:

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.

Additional key words

ascorbate peroxidase ascorbic acid catalase brassinosteroids elecrolyte leakage glutathione guaiacol peroxidase ion balance reactive oxygen species Solanum melongena superoxide dismutase 

Abbrevations

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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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • H. -D. Ding
    • 1
    • 2
  • X. -H. Zhu
    • 1
  • Z. -W. Zhu
    • 2
  • S. -J. Yang
    • 2
  • D. -S. Zha
    • 2
  • X. -X. Wu
    • 2
    • 3
  1. 1.College of Biosciences and BiotechnologyYangzhou UniversityYangzhouChina
  2. 2.Horticultural Research InstituteShanghai Academy of Agricultural SciencesShanghaiChina
  3. 3.Shanghai Key Lab of Protected Horticultural TechnologyShanghaiChina

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