Differential induction of superoxide dismutase in downy mildew-resistant and -susceptible genotypes of pearl millet

Babitha, M. P. and Bhat, S. G. and Prakash, H. S. and Shetty, H. S. (2002) Differential induction of superoxide dismutase in downy mildew-resistant and -susceptible genotypes of pearl millet. Plant Pathology, 51 (4). pp. 480-486. ISSN 1365-3059

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Abstract

Differential induction of superoxide dismutase (SOD) in downy mildew-resistant and -susceptible genotypes of pearl millet (Pennisetum glaucum) was observed on inoculation with Sclerospora graminicola. SOD activity was studied in resistant (IP18292) and susceptible (23B) pearl millet seedlings inoculated with S. graminicola. SOD activity increased by 2·3-fold in resistant seedlings upon inoculation. SOD activity was greatest in roots, with a specific activity of 3182 U per mg protein, after inoculation. SOD activity increased in all the resistant genotypes upon inoculation with S. graminicola. Native PAGE analysis showed four isozymes of SOD, three of which (SOD-1, -2 and -4) were Cu/Zn-SOD, whereas isozyme SOD-3 was Mn-SOD. This study also revealed increased intensity of all four isozymes of SOD in the resistant genotype upon inoculation. The involvement of SOD in pearl millet (host)–downy mildew pathogen interaction is discussed.

Item Type:	Article
Uncontrolled Keywords:	downy mildew, host–pathogen interaction, isozymes, pearl millet, Sclerospora graminicola, superoxide dismutase
Subjects:	B Life Science > Biotechnology
Divisions:	Department of > Biotechnology
Depositing User:	Manjula P Library Assistant
Date Deposited:	23 Sep 2019 06:26
Last Modified:	23 Sep 2019 06:26
URI:	http://eprints.uni-mysore.ac.in/id/eprint/8357

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