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Tony Wahlroos
Tony Wahlroos
Finland
Publications
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Research Article
Differential Effects of Viral Coat Protein on Induction of Hypersensitive Response and Systemic Movement of Tobacco Mosaic Virus and Tobacco Mild Green Mosaic Virus in Nicotiana megalosiphon
Author(s): Tony Wahlroos and Petri Susi Tony Wahlroos and Petri Susi
Tobacco mosaic virus (TMV) and Tobacco mild green mosaic virus (TMGMV) are both known to induce hypersensitive response (HR) local lesions in Nicotiana megalosiphon, a hybrid plant from a cross between N. suaveolens and N. fragrans, but only TMV is capable of systemic movement. Therefore, the determinants of induction of hypersensitive response and systemic movement of TMV and TMGMV in N. megalosiphon were further analyzed. HR was shown to be independent of the temperature indicating that the resistance responses are different from N gene responses induced in tobacco (N. tabacum cv. Xanthi-nc.) to TMV. Comparison of lesion growth between wild-type and transgenic tobacco plants encoding salicylate hydroxylase (nahG) indicated that TMV spread similarly in N. megalosiphon and Xanthi-nc./nahG plants. In addition, exogenous application of SA did not preven.. View More»