Responses of antioxidant potentials in Dioscorea rotundata Poir. following paclobutrazol drenching

Cheruth Abdul Jaleel, Paramasivam Manivannan, Muthiah Gomathinayagam, Ramalingam Sridharan, Rajaram Panneerselvam

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


The effect of paclobutrazol (PBZ) treatments on the antioxidant metabolism of white yam (Dioscorea rotundata Poir.) was investigated in the present study. PBZ @ 15 mg l-1 plant-1 was given to plants by soil drenching, 30, 60, and 90 days after planting (DAP). The non-enzymatic antioxidant contents like ascorbic acid (AA), reduced glutathione (GSH) and α-tocopherol (α-toc), activities of antioxidant enzymes like superoxide dismutase (SOD), ascorbate peroxidase (APX), polyphenol oxidase (PPO) and catalase (CAT) were extracted and assayed on 100 DAP from leaf, stem and tubers of both control and PBZ treated plants. It was found that PBZ has a profound effect on the antioxidant metabolism and caused an enhancement in both non-enzymatic and enzymatic antioxidant potentials under treatments in white yam. Our results have good significance, as this increase the innate antioxidant potential of this food crop, which is helpful to satisfy the needs of antioxidants in diet and thereby make it an economically important food crop. To cite this article: C.A. Jaleel et al., C. R. Biologies 330 (2007).

Original languageEnglish
Pages (from-to)798-805
Number of pages8
JournalComptes Rendus - Biologies
Issue number11
Publication statusPublished - Nov 2007
Externally publishedYes


  • Antioxidant enzymes
  • Antioxidants
  • Dioscorea rotundata
  • Paclobutrazol

ASJC Scopus subject areas

  • General Biochemistry,Genetics and Molecular Biology
  • General Immunology and Microbiology
  • General Agricultural and Biological Sciences


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