Alphanucleorhabdovirus colocasiae
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Author(s): Scot Nelson
Source: Flickr
Alphanucleorhabdovirus colocasiae
Assigned virus:
• taro vein chlorosis virus (TaVCV)
The taro vein chlorosis virus is widely distributed in the Pacific and infects taro plants, Colocasia esculenta (Pearson et al., 1999). The symptoms include chlorosis around the leaf veins, stunting and chlorotic streaks along the petioles. Infected leaves are often curved downwards, and the chlorotic areas around the veins tend to coalesce, forming a reticulated pattern. The symptoms are often similar to those of infections by the 'dasheen mosaic virus' (DsMV). However, chlorotic veins caused by DsMV are typically restricted to certain parts of the infected leaf and are more evenly distributed around the leaf in the case of TaVCV infections.
The particles of TaVCV are bacilliform (~200 x 70 nm). The negative-sense RNA genome has a size of 12,020 nt and includes 6 open reading frames.
