Indian Journal of Plant Physiology

, Volume 21, Issue 2, pp 137–142 | Cite as

Triacontanol-induced changes in growth, oxidative defense system in Coriander (Coriandrum sativum) under arsenic toxicity

  • Elham Asadi Karam
  • Batool Keramat
  • Zahra Asrar
  • Hossein Mozafari
Original Article


Triacontanol (TRIA) is a plant growth regulator that enhances crops growth and yield when applied exogenously. The present study was carried out to investigate the effects of TRIA pretreatment on the activities of antioxidant enzymes and some biochemical attributes in coriander (Coriandrum sativum L.) seedling leaves exposed to arsenic (As) stress. TRIA was applied to seedlings at the three-leaf stage @ 5, 10 and 20 μmol l−1. Arsenic treatment was given after completion of TRIA treatment @ 100 and 200 μmol l−1. The As toxicity in coriander leaves was revealed by reduction of growth parameters. Arsenic-induced oxidative stress also showed a pronounced increase in the contents of hydrogen peroxide (H2O2) and levels of lipid peroxidation, and proline content. TRIA ameliorated the adverse effects of As on these attributes. Arsenic induced the activities of key antioxidant enzymes, viz., superoxide dismutase, catalase and peroxidase, which further increased under TRIA pre-treatment. The results suggested that TRIA might alleviate As toxicity in coriander by activating antioxidant enzymes, thereby preventing membrane peroxidation.


Antioxidants Arsenic Lipid peroxidation Triacontanol Coriander 


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Copyright information

© Indian Society for Plant Physiology 2016

Authors and Affiliations

  • Elham Asadi Karam
    • 1
  • Batool Keramat
    • 1
  • Zahra Asrar
    • 1
  • Hossein Mozafari
    • 2
  1. 1.Biology DepartmentShahid Bahonar University of KermanKermanIran
  2. 2.Department of Ecology, Institute of Science and High Technology and Environmental SciencesGraduate University of Advanced TechnologyMahan, KermanIran

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