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J Integr Plant Biol, 1996, 38 (5): -, Research Article
Expression of Potato Virus Y Coat Protein Gene in Transgenic Potato
Cao Xiao-feng, Yang Mei-zhu, Zhu Yu-xian and Chen Zhang-liang
doi:
Abstract
Potato virus Y (PVY) N coat protein (CP) coding sequence was cloned into a plant expression vector pMON316 under the CaMV 35S promoter. Leaf discs of potato (Solanum tuberosum) were used to Agrobacterium-mediated gene transfer. A large number of regenerated putative transgenic plants were obtained based on kanamycin resistance. Using total DNA purified from transgenic plants as templates and two oligonucleotides synthesized from 5' and 3' of the PVY coat protein gene as primers, the authors carried out polymerase chain reaction (PCR) to check the presence of this gene and obtained a 0. 8 kb specific DNA fragment after 35 cycles of amplification. Southern blot indicated that the PCR product was indeed PVY CP gene which had been integrated into the potato genome. Enzyme-linked immunosorbent assay (ELISA) of our transgenic plants showed that CP gene was expressed in at least some transgenic potato plants.
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