Hypersensitive reaction and P/HRGP accumulation is modulated by nitric oxide through hydrogen peroxide in pearl millet during Sclerospora graminicola infection

Manjunatha, G. and Deepak, S. and Geetha, P. N. and Niranjan-Raj, S. and Kini, R. K. and Shetty, Shekar H. (2009) Hypersensitive reaction and P/HRGP accumulation is modulated by nitric oxide through hydrogen peroxide in pearl millet during Sclerospora graminicola infection. Physiological and Molecular Plant Pathology, 74 (2). pp. 191-198. ISSN 0885-5765

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Official URL: http://doi.org/10.1016/j.pmpp.2009.12.001

Abstract

Priming of pearl millet seedlings with nitric oxide (NO) donors sodium nitroprusside (SNP) and S-nitrosoglutathione (SNOG) induced hypersensitive reactions (HR) and accumulation of Proline/Hydroxyproline-rich glycoprotein (P/HRGP) during infection by downy mildew pathogen Sclerospora graminicola. Such defense responses were specifically altered by concentration of NO donors resulting in the modulation of endogenous NO in seedling tissues. The stoichiometric interactions of NO and hydrogen peroxide (H2O2) when followed in relation to HR and P/HRGP accumulation, the degree of defense response varied with H2O2 level, the latter being largely influenced by NO concentration. Therefore, balancing NO and H2O2 is vital for optimum expression of defense responses for imparting disease resistance. (C) 2009 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Nitric oxide; Hydrogen peroxide; Hypersensitive reaction; Proline/Hydroxyproline-rich glycoprotein; Sclerospora graminicola
Subjects: B Life Science > Biotechnology
Divisions: Department of > Biotechnology
Depositing User: Shrirekha N
Date Deposited: 27 Aug 2019 09:54
Last Modified: 27 Aug 2019 09:54
URI: http://eprints.uni-mysore.ac.in/id/eprint/7134

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