24-Epibrassinolide protects against the stress generated by salinity and nickel in Brassica juncea

Chemosphere. 2008 Jul;72(9):1387-92. doi: 10.1016/j.chemosphere.2008.04.012. Epub 2008 May 21.

Abstract

The plants of Brassica juncea (L) were grown in the presence of NaCl and/or NiCl2 and were sprayed with 1muM of 24-epibrassinolide (EBL) at 15 days after sowing (DAS) and were sampled at 30 DAS. The plants exposed to NaCl and/or NiCl2 exhibited a significant decline in growth, the level of pigments and photosynthetic parameters. However, the follow up treatment with EBL detoxified the stress generated by NaCl and/or NiCl2 and significantly improved the above parameters. The NaCl and/or NiCl2 increased electrolyte leakage and lipid peroxidation, and decreased the membrane stability index (MSI) and relative water content. However, the EBL treatment in absence of the stress improved the MSI and relative water content but could not influence electrolyte leakage and lipid peroxidation. The antioxidative enzymes and the level of proline exhibited a significant increase in response to EBL as well as to NaCl and/or NiCl2 stress.

MeSH terms

  • Brassinosteroids
  • Carbonic Anhydrases / metabolism
  • Cell Membrane / physiology
  • Cholestanols / pharmacology*
  • Electrolytes / metabolism
  • Lipid Peroxidation / drug effects
  • Lipid Peroxidation / physiology
  • Mustard Plant / chemistry*
  • Mustard Plant / growth & development
  • Nickel / metabolism*
  • Photosynthesis / physiology
  • Pigments, Biological / metabolism
  • Proline / metabolism
  • Sodium Chloride / metabolism*
  • Steroids, Heterocyclic / pharmacology*
  • Superoxide Dismutase / metabolism
  • Thiobarbituric Acid Reactive Substances / metabolism
  • Water / metabolism

Substances

  • Brassinosteroids
  • Cholestanols
  • Electrolytes
  • Pigments, Biological
  • Steroids, Heterocyclic
  • Thiobarbituric Acid Reactive Substances
  • Water
  • Sodium Chloride
  • Nickel
  • Proline
  • Superoxide Dismutase
  • Carbonic Anhydrases
  • brassinolide