Plant growth regulator interactions results enhancement of antioxidant enzymes in Catharanthus roseus

Cheruth Abdul Jaleel, Mohammed A. Salem, Mirza Hasanuzzaman, Kamrun Nahar

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The present investigation was carried out with the objectives to understand the effect of paclobutrazol, gibberellic acid and Pseudomonas fluorescens on the enzymatic antioxidants like Ascorbate peroxidase (APX, EC: 1.11.1.11), Superoxide dismutase (SOD, EC: 1.15.1.1), Catalase (CAT, EC: 1.11.1.6), Peroxidase (POX, EC 1.11.1.7) and polyphenol oxidase (PPO, Ec 1.10.3.1) activities of Catharanthus roseus plants under field conditions. 10 mg l-1 paclobutrazol, 5 μM gibberellic acid and 1 mg P. fluorescens concentrations were used for the treatments, and control plants were irrigated with well water. The treatments were given 38, 53, 68 and 83 days after planting (DAP) by soil drenching. The plants were taken randomly 45, 60, 75 and 90 DAP and separated into root, stem, leaves and flowers and used for estimating the antioxidant enzymes. The results showed that these plant growth regulators have significant effects on antioxidant enzymes of C. roseus.

Original languageEnglish
Pages (from-to)135-145
Number of pages11
JournalJournal of Plant Interactions
Volume5
Issue number2
DOIs
Publication statusPublished - Jun 2010

Keywords

  • Ascorbate peroxidase
  • Catalase
  • Catharanthus roseus
  • Gibberellic acid
  • Paclobutrazol
  • Peroxidase
  • Polyphenol oxidase
  • Pseudomonas fluorescens
  • Superoxide dismutase

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

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