biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 43:559-562, 2000 | DOI: 10.1023/A:1002821715719

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

M. Tyagi1, Arvind M. Kayastha1,*, B. Sinha2
1 School of Biotechnology, Faculty of Science, Banaras Hindu University, Varanasi -, India
2 Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi -, India

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.

Keywords: phenolics; susceptibility; Triticum aestivum
Subjects: Alternaria triticina; peroxidase isozymes, resistance to Alternaria; phenolics, resistance to Alternaria triticina; polyphenol oxidase isozymes, resistance to Alternaria; susceptibility to Alternaria triticina; Triticum aestivum; wheat, resistance to Alternaria triticina

Published: December 1, 2000  Show citation

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Tyagi, M., Kayastha, A.M., & Sinha, B. (2000). The Role of Peroxidase and Polyphenol Oxidase Isozymes in Wheat Resistance to Alternaria triticina. Biologia plantarum, 43(4), 559-562. doi: 10.1023/A:1002821715719
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