ISHS Acta Horticulturae 386: XVI International Symposium on Fruit Tree Virus diseases
AN ELONGATED VIRUS ISOLATED FROM OLIVE (OLEA EUROPEA L.) |
| Authors: | F. Faggioli, M. Barba |
| Abstract:
An elongated virus, for which the name olive vein yellow virus (OVYV) is suggested, was isolated in central Italy from a fruitless olive tree with yellowing leaf symptoms. The virus, classified as a probable member of the genus potexvirus, seems to be different from other definitive or putative potexviruses. OVYV has elongated and flexuous particles, 520 nm long and 12 nm wide with striations of 3.4 nm in pitch. It was purified from Chenopodium quinoa, the only symptomatic herbaceous host, and an antiserum, with a titre of 1/1024 in immunoelectron microscopy (IEM), was prepared. OVYV was serological related to papaya mosaic potexvirus (PaMV) in IEM test and to PaMV and babaco yellow mosaic virus (BaYMV) in immunoblotting test. Polyacrylamide gel electrophoresis (PAGE) showed one protein band, only in the infected sample, with an estimated molecular weight of 29,500 daltons. Studies are in progress to further characterize OVYV and to understand the role it plays in diseased olive plants. | |
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