A full-length infectious cDNA clone of potato virus Y (PVY) was constructed based on an isolate of the PVY NTN-NW strain, SYR-II-2-8, which is able to cause potato tuber necrotic ringspot disease (PTNRD). Silent point mutations were introduced to modify sequences similar to the prokaryotic promoter elements detected at the 5’ terminus of the P3 coding region of SYR-II-2-8. This, along with modification of the growing conditions of E. coli , led to the successful construction of a stable full-length infectious cDNA clone, named p2-8C3. The biological properties of p2-8C3 were identical to those of SYR-II-2-8, both of which induced PTNRD in potato, veinal necrosis in tobacco, and similar symptoms in the potato cultivars inoculated.
Archives of Virology – Springer Journals
Published: Nov 1, 2011
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