Comparison of Two Strains of Peanut Stripe Virus in Taiwan

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Abstract
Two strains (Ts and Tc) of peanut stripe virus (PStV) naturally occurring in peanut (Arachis hypogaea) in Taiwan were isolated. PStV-Ts induced severe mosaic and systemic necrotic symptoms differing from the stripe symptoms induced by PStV-Tc and previously described PStV isolates. The biological properties of PStV-Ts were very similar to those of PStV-Tc and other known PStV isolates. Seed transmission rates of PStV-Ts in peanut averaged 12.5%. The purified capsid and cylindrical inclusion proteins of PStV-Ts consisted of single species of protein monomer with molecular weights of 36,000 and 71,000 respectively. In serological tests, PStV-Ts was indistinguishable from PStV-Tc and two PStV isolates from the United States but different from 14 other potyviruses.