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

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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.

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Abbreviations

AOX:

antioxidative

APX:

ascorbate peroxidase

CAT:

catalase

GPX:

guaiacol peroxidase

GR:

glutathione reductase

SOD:

superoxide dismutase

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Authors and Affiliations

  1. ICAR-Central Research Institute for Dryland Agriculture, Division of Crop Sciences, Hyderabad, Telangana, India

    T. Vijaya Lakshmi, Y. Varalaxmi, S. K. Yadav & M. Maheswari

Authors
  1. T. Vijaya Lakshmi
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  2. Y. Varalaxmi
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  3. S. K. Yadav
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  4. M. Maheswari
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Correspondence to M. Maheswari.

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Vijaya Lakshmi, T., Varalaxmi, Y., Yadav, S.K. et al. Differential response of antioxidative enzymes to various abiotic stresses in Pennisetum glaucum seedlings. Russ J Plant Physiol 64, 889–898 (2017). https://doi.org/10.1134/S1021443717060061

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  • DOI: https://doi.org/10.1134/S1021443717060061

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