Articles
A MOSAIC DISEASE OF PRIMULA OBCONICA CAUSED BY A POTYVIRUS
Article number
59_23
Pages
167 – 174
Language
Abstract
From Primula obconica plants showing mosaic and flower colour-breaking an elongated virus belonging to the potyvirus group has been sporadically isolated since 1968. This virus, which was the causal agent of the disease, could be isolated only from flowers, not from leaves.
Under experimental conditions the virus infects a rather wide range of plant species belonging to 10 families and is aphid transmitted in the stylet-borne manner. "In vitro" properties of the virus are: thermal inactivation point between 55 and 60 °C, dilution end point between 10-3 and 10–4 and longevity 15 days at room temperature.
Under experimental conditions the virus infects a rather wide range of plant species belonging to 10 families and is aphid transmitted in the stylet-borne manner. "In vitro" properties of the virus are: thermal inactivation point between 55 and 60 °C, dilution end point between 10-3 and 10–4 and longevity 15 days at room temperature.
The virus was purified and specific sera with maximum titers of 1:2048 were obtained.
In preliminary trials done with the slide precipitin test the virus from P. obconica reacted with sera to bean yellow mosaic virus and lettuce mosaic virus.
Our virus seems different from all the other viruses known to cause natural infection in Primula spp.
Authors
V. Lisa, O. Lovisolo
Keywords
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