PMID: 8580772Jan 1, 1996Paper

Analysis of late-blight disease resistance and freezing tolerance in transgenic potato plants expressing sense and antisense genes for an osmotin-like protein

Planta
B ZhuP H Li

Abstract

The expression patterns of plant defense genes encoding osmotin and osmotin-like proteins imply a dual function in osmotic stress and plant pathogen defense. We have produced transgenic potato (Solanum commersonii Dun.) plants constitutively expressing sense or antisense RNAs from chimeric gene constructs consisting of the cauliflower mosaic virus 35S promoter and a cDNA (pA13) for an osmotin-like protein. Transgenic potato plants expressing high levels of the pA13 osmotin-like protein showed an increased tolerance to the late-blight fungus Phytophthora infestans at various phases of infection, with a greater resistance at an early phase of fungal infection. There was a decrease in the accumulation of osmotin-like mRNAs and proteins when antisense transformants were challenged by fungal infection, although the antisense transformants did not exhibit any alterations in disease susceptibility. Expression of pA13 sense and antisense RNAs had no effect on the development of freezing tolerance in transgenic plants when assayed under a variety of conditions including treatments with abscisic acid or low temperature. These results provide evidence of antifungal activity for a potato osmotin-like protein against the fungus P. infestans...Continue Reading

Citations

Jun 11, 2005·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Milan OsuskySantosh Misra
Aug 1, 1997·Current Opinion in Biotechnology·E FrankenR Hain
Apr 20, 2001·Current Opinion in Plant Biology·J Browse, Z Xin
Mar 14, 2000·Current Opinion in Plant Biology·L S Melchers, M H Stuiver
Jun 1, 2004·Nutrition Research Reviews·Paul Christou, Richard M Twyman
Oct 24, 2008·Phytopathology·R N SturrockA K M Ekramoddoullah
Jan 17, 2014·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Suman SanjuB P Singh
Jul 14, 2010·Molecular Plant Pathology·Hannele Lindqvist-KreuzeMerideth Bonierbale
Aug 30, 2011·Biotechnology Advances·Mohammad Reza SafarnejadStefan Schillberg
Apr 9, 2015·Frontiers in Plant Science·S Anil KumarP B Kavi Kishor
Apr 15, 2003·Plant Physiology·Paola VeroneseMeena L Narasimhan

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