Manjunatha, Girigowda ; Deepak, Shantharaj ; Geetha, Prashanth N. ; Niranjan-Raj, Sathyanarayana ; Kini, Ramachandra K. ; Shetty, Hunthrike Shekar (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://linkinghub.elsevier.com/retrieve/pii/S08855...
Related URL: http://dx.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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Nitric Oxide; Hydrogen Peroxide; Hypersensitive Reaction; Proline; Hydroxyproline-rich Glycoprotein; Sclerospora graminicola |
| ID Code: | 46736 |
| Deposited On: | 06 Jul 2011 07:21 |
| Last Modified: | 06 Jul 2011 07:21 |
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