Effect of paclobutrazol on water stress amelioration through antioxidants and free radical scavenging enzymes in Arachis hypogaea L.

B. Sankar, C. Abdul Jaleel, P. Manivannan, A. Kishorekumar, R. Somasundaram, R. Panneerselvam

Research output: Contribution to journalArticlepeer-review

111 Citations (Scopus)

Abstract

An investigation was carried out to find out the extent of changes occurred in groundnut (Arachis hypogaea L.) cultivars in response to paclobutrazol (PBZ) treatment under water deficit stress. Two groundnut cultivars namely ICG 221 and ICG 476 were used for the study. Individual treatment with PBZ and drought stress showed an increase in ascorbic acid, α-tocopherol and reduced glutathione, superoxide dismutase (SOD), ascorbate peroxidase (APX) and catalase (CAT) activities. PBZ with drought stressed plants maintained higher levels of antioxidant and scavenging enzymes. Significant differences were observed between cultivars and treatments. These results suggests that the adverse effects of water stress can be minimized by the application of PBZ by increasing the antioxidant levels and activities of scavenging enzymes such as SOD, APX and CAT. The Cv. ICG 221 appears to be more tolerant to water stress than the ICG 476.

Original languageEnglish
Pages (from-to)229-235
Number of pages7
JournalColloids and Surfaces B: Biointerfaces
Volume60
Issue number2
DOIs
Publication statusPublished - Nov 15 2007
Externally publishedYes

Keywords

  • Antioxidant enzymes
  • Groundnut
  • Paclobutrazol
  • Water stress

ASJC Scopus subject areas

  • Biotechnology
  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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