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The Role of Peroxidase and Polyphenol Oxidase Isozymes in Wheat Resistance to Alternaria triticina

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Biologia Plantarum

Abstract

Polyphenol oxidase activity was higher in resistant wheat cultivar ACC-8226 than in susceptible cultivar MP-845 in control sets and after inoculation of Alternaria triticina. However, similar polyphenol oxidase isozyme pattern was found in control and inoculated sets of both the cultivars, but the band intensity was higher after inoculation. Three and four peroxidase isozymes were found in ACC-8226 and MP-845, respectively. An extra peroxidase isozyme band was observed in both the cultivars after inoculation. The results suggest an active role of peroxidase and polyphenol oxidase in defence mechanism of wheat plants.

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Authors and Affiliations

  1. School of Biotechnology, Faculty of Science, Banaras Hindu University, Varanasi -, 221 005, India

    M. Tyagi & Arvind M. Kayastha

  2. Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi -, 221 005, India

    B. Sinha

Authors
  1. M. Tyagi
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  2. Arvind M. Kayastha
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  3. B. Sinha
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Correspondence to Arvind M. Kayastha.

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Tyagi, M., Kayastha, A.M. & Sinha, B. The Role of Peroxidase and Polyphenol Oxidase Isozymes in Wheat Resistance to Alternaria triticina. Biologia Plantarum 43, 559–562 (2000). https://doi.org/10.1023/A:1002821715719

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