Latha, A.M. and Rao, K.V. and Reddy, T.P. and Reddy, V.D. (2000) Development of transgenic pearl millet (Pennisetum glaucum (L.) R. Br.) plants resistant to downy mildew. Plant Cell Rep , 25. pp. 927-935.
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Abstract
Transgenic pearl millet lines expressing pin gene—exhibiting high resistance to downy mildew pathogen, Sclerospora graminicola—were produced using particle-inflow-gun (PIG) method. Shoot-tip-derived embryogenic calli were co-bombarded with plasmids containing pin and bar genes driven by CaMV 35S promoter. Bombarded calli were cultured on MS medium with phosphinothricin as a selection agent. Primary transformants 1T0, 2T0, and 3T0 showed the presence of both bar and pin coding sequences as evidenced by PCR and Southern blot analysis, respectively. T1 progenies of three primary transformants, when evaluated for downy mildew resistance, segregated into resistant and susceptible phenotypes. T1 plants resistant to downy mildew invariably exhibited tolerance to Basta suggesting co-segregation of pin and bar genes. Further, the downy mildew resistant 1T1 plants were found positive for pin gene in Southern and Northern analyses thereby confirming stable integration, expression, and transmission of pin gene. 1T2 progenies of 1T0 conformed to dihybrid segregation of 15 resistant:1 susceptible plants.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Centre for Plant Molecular Biology, Osmania University, Hyderabad 500007, Andhra Pradesh, India |
| Subjects: | Plant Protection > Control Methods Crop Improvement > Biotechnology |
| Divisions: | Millet |
| Depositing User: | Sushil |
| Date Deposited: | 17 Oct 2010 15:26 |
| Last Modified: | 17 Oct 2010 15:26 |
| Official URL: | http://www.springer.com/life+sciences/cell+biology... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/89 |
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