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Etiology

Isolation and Characterization of a Rod-Shaped, Whitefly-Transmissible, DNA-Containing Plant Virus. I. Sela, The Hebrew University, Faculty of Agriculture, Rehovot, Israel; I. Assouline(2), E. Tanne(3), S. Cohen(4), and S. Marco(5). (2)The Hebrew University, Faculty of Agriculture, Rehovot, Israel; (3)(4)(5)Agriculture Research Organization, The Volcani Center, Bet Dagan, Israel. Phytopathology 70:226-228. Accepted for publication 27 July 1979. Copyright 1980 The American Phytopathological Society. DOI: 10.1094/Phyto-70-226.

A whitefly-transmissible virus, cucumber vein yellowing virus (CVYV), was purified and characterized. The virus is unstable, forms various aggregates, and its infectivity and particle integrity depend greatly on the ionic strength of the medium used in extraction and purification. The virus particles are rod-shaped (740–800 × 15–18 mm) and have a sedimentation coefficient of about 220 S. CVYV consists of double-stranded DNA and a single proteinaceous subunit (39,000 daltons). These characteristics indicate that CVYV is a type of virus that has not been described previously.