Transcripts of resistance gene candidates accumulate in pearl millet as a response to infection by Sclerospora graminicola.

Ranjini, P. and Shailasree, S. and Kini, K. Ramachandra and Shetty, H. Shekar (2006) Transcripts of resistance gene candidates accumulate in pearl millet as a response to infection by Sclerospora graminicola. Journal of Mycology and Plant Pathology, 36 (3, Cop). pp. 411-414. ISSN 0971-9393

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Abstract

A plant pathogen interaction symbolically mimics a war. In this, plants employ several layers of defense against the invaders. This includes mech. barriers, chem. warfare, sophisticated and complex signaling and sacrifice of some host components. Plant resistance genes confer gene for gene resistance to a wide range of natural enemies like viruses, bacteria and fungus by recognizing pathogen Avr gene products and triggering downstream response pathways. Pearl millet [Pennisetum glaucum (L) R.Br] is the most drought tolerant cereal food crop of the semi arid tropics. It is highly susceptible to the downy mildew disease caused by oomycetous Sclerospora graminicola (Sacc) Schroet. Pearl millet resistance gene candidates (RGCs) RGPM 213 and RGPM 301 showed 56 and 83% identity resp. to rice R-proteins. These RGCs are identified to encode NBS-LRR like protein kinase and NBS region contg. proteins in pearl millet. We have demonstrated on the accumulation of transcripts of these RGCs in pearl millet during the infection with S. graminicola is shown. These genes are induced to a max. level at 6 to 9 h after infection with the pathogen S. graminicola in a resistant cv. of pearl millet. The transcripts were also induced strongly by seed treatment of pearl millet with β-amino butyric acid (BABA), a known abiotic inducer of resistance in pearl millet. These results suggest that RGPM 213 and RGPM 301 have an important role in resistance of pearl millet against downy mildew. [on SciFinder(R)]

Item Type: Article
Additional Information: Unmapped bibliographic data: PY - 2006/// [EPrints field already has value set] JA - J. Mycol. Plant Pathol. [Field not mapped to EPrints]
Uncontrolled Keywords: Pennisetum Sclerospora infection resistance gene expression
Subjects: Agriculture Biological Sciences > Botany
University of Mysore > PG Campuses > Manasagangotri, Mysore > Agriculture Biological Sciences > Botany

Agriculture Biological Sciences > Biotechnology
University of Mysore > PG Campuses > Manasagangotri, Mysore > Agriculture Biological Sciences > Biotechnology
Divisions: PG Campuses > Manasagangotri, Mysore > Biotechnology
PG Campuses > Manasagangotri, Mysore > Botany
Depositing User: Dhruvakumar
Date Deposited: 04 Jun 2013 05:43
Last Modified: 04 Jun 2013 05:43
URI: http://eprints.uni-mysore.ac.in/id/eprint/11834

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