Nepovirus avii
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Author(s): John Mircetich, University of California
Source: PaDIL
Nepovirus avii
Assigned virus:
• cherry leaf roll virus (CLRV)
The cherry leaf roll virus has a world-wide distribution and a wide host range, including various crops and trees. It can cause severe symptoms in some hosts which may lead to tree death. The leaf symptoms include leaf rolling, chlorotic mosaic, chlorotic or yellow ring patterns or ringspots, yellow vein netting and yellow spotting. Infections can result in canopy decline and the formation of a narrow, black, necrotic strip in the wood at the border between rootstock and scion (blackline disease). On some hosts like walnut there are no foliar symptoms but blacklines and canopy decline still develop.
CLRV is transmitted through pollen or seed and can be also experimentally transmitted by mechanical means. The genome consists of 2 positive-sense, single-stranded RNAs (about 6 and 8 kb large), encapsidated separately in isometric particles with a diameter of 28 nm.
