J Integr Plant Biol. ›› 1993, Vol. 35 ›› Issue (11): -.

• Research Articles •    

Resistance to Potato Virus X Infection in Transgenic Tobacco Plants with Coat Protein Gene of Virus

Wang Chun-xiang ,Yang Mei-zhu,Pan Nai-sui and Chen Zhang-liang   

Abstract: A major commercial cultivar of tobacco was transformed via Agrobacterium mediated procedure. Tobacco leaves started to form shoots on shoot inducing medium containing kanamycin after infected by Agrobacterium containing the plasmid with PVX CP gene. Regenerated plants were obtained in two weeks on hormone-free MS medium containing kanamycin. The transgenic tobacco plants were identified with nopaline detection,enzyme-linked immunosorbent assay and western blot analysis, symptom appearance was significantly delayed and virus accumulation was either absent or reduced in PVX CP gene transformed plants. Progenies of transgenic tobacco plants also gained resistance to PVX infection to a certain degree. These experiments demonstrate that CP protection is effective against PVX.

Key words: Potato virus X, Coat protein gene, Plant virus resistance, Tobacco

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