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

    13 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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