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Russian Journal of Plant Physiology

, Volume 64, Issue 6, pp 889–898 | Cite as

Differential response of antioxidative enzymes to various abiotic stresses in Pennisetum glaucum seedlings

  • T. Vijaya Lakshmi
  • Y. Varalaxmi
  • S. K. Yadav
  • M. Maheswari
Research Papers
  • 45 Downloads

Abstract

Antioxidative enzyme activities and their isozyme patterns under water-deficit, salinity, high and low temperature stresses were studied in the seedlings of Pennisetum glaucum (L.) R.Br. It was observed that under water-deficit stress glutathione reductase (GR) was the key enzyme while in case of high temperature stress, GR along with catalase played a major role. Superoxide dismutase was found to be the main enzyme under low temperature stress. Co-ordinated higher expression of all the antioxidative enzymes was observed under salt stress. This study revealed the operation of different enzymatic antioxidative mechanisms under various abiotic stresses that will aid in understanding the metabolic basis of stress tolerance in pearl millet.

Keywords

Pennisetum glaucum abiotic stresses normalized membrane stability index antioxidative enzymes isozymes 

Abbreviations

AOX

antioxidative

APX

ascorbate peroxidase

CAT

catalase

GPX

guaiacol peroxidase

GR

glutathione reductase

SOD

superoxide dismutase

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • T. Vijaya Lakshmi
    • 1
  • Y. Varalaxmi
    • 1
  • S. K. Yadav
    • 1
  • M. Maheswari
    • 1
  1. 1.ICAR-Central Research Institute for Dryland AgricultureDivision of Crop SciencesHyderabadIndia

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