OCCURENCE OF TWO SAP-TRANSMISSIBLE VIRUSES IN WALNUTS
From walnut trees growing in Apulia (southern Italy) and showing foliar discolorations of various kinds, i.e. yellowish ringspots and line patterns or a bright chrome yellow mottle, two mechanically transmissible viruses were recovered.
One of these viruses (walnut ringspot virus = WRSV) was purified and partially characterized.
It proved to be a multicomponent entity with two nucleoproteins sedimenting at different rates and containing 39 and 43% of single-stranded RNA, respectively.
The mol. wt. of two RNA species was about 2.0 – 2.1 and 2.5x106 daltons.
The protein coat was composed of a single polypeptide with mol. wt. of about 54,000. WRSV was not serologically related to any of 26 isometric viruses including 12 members of NEPO virus group. Whether or not WRSV is related to the virus associated with walnut yellow mosaic has not been ascertained.
Savino, V., Quacquarelli, A., Gallitelli, D., Piazzolla, P. and Marteli, G.P. (1976). OCCURENCE OF TWO SAP-TRANSMISSIBLE VIRUSES IN WALNUTS. Acta Hortic. 67, 326-326
DOI: 10.17660/ActaHortic.1976.67.44
https://doi.org/10.17660/ActaHortic.1976.67.44
DOI: 10.17660/ActaHortic.1976.67.44
https://doi.org/10.17660/ActaHortic.1976.67.44
67_44
326-326
- Division Temperate Tree Fruits
- Division Temperate Tree Nuts
- Division Vine and Berry Fruits
- Division Ornamental Plants
- Division Vegetables, Roots and Tubers
- Division Physiology and Plant-Environment Interactions of Horticultural Crops in Field Systems
- Division Protected Cultivation and Soilless Culture
- Division Postharvest and Quality Assurance
- Division Tropical and Subtropical Fruit and Nuts