Triadimefon induced salt stress tolerance in Withania somnifera and its relationship to antioxidant defense system

C. Abdul Jaleel, G. M.A. Lakshmanan, M. Gomathinayagam, R. Panneerselvam

Research output: Contribution to journalArticlepeer-review

89 Citations (Scopus)

Abstract

The mitigative effects of triadimefon (5 mg/L) on the germination, early seedling growth, photosynthetic pigments, non-enzymatic antioxidant contents and activities of antioxidant enzymes were studied in salt stressed (40 mM NaCl) Withania somnifera Dunal plants. Salinity stress decreased the germination percentage, early seedling growth and chlorophyll contents. Similarly it affected severely the antioxidants like ascorbic acid (AA), reduced glutathione (GSH) and α-tocopherol (α-toc) in all plant parts (root, stem and leaf). Moreover, it caused changes in the activities of antioxidant enzymes like superoxide dismutase (SOD), peroxidase (POX), polyphenol oxidase (PPO) and catalase (CAT). Triadimefon partially mitigated the salinity stress by enhancing all studied parameters to a considerable extent.

Original languageEnglish
Pages (from-to)126-132
Number of pages7
JournalSouth African Journal of Botany
Volume74
Issue number1
DOIs
Publication statusPublished - Jan 2008
Externally publishedYes

Keywords

  • Antioxidant enzymes
  • Antioxidants
  • Salinity stress
  • Triadimefon
  • Withania somnifera

ASJC Scopus subject areas

  • Plant Science

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