Main Plant Diseases Caused by Umbravirus / 微生物学通报

The genomes of umbraviruses do not encode a coat protein, and thus no conventional virus particles are formed in infected plants. Umbraviruses are always coinfected with an assistor virus, which is always a member of the family Luteoviridae, to cause most devastating diseases in some areas. The epidemiology of the umbra-virus-caused disease is largely depended on aphid transmission. The symptomology, occurrence, characteristics of the causal agents, disease control of carrot motley dwarf, groundnut rosette and tobacco bushy top were reviewed detailedly in this article.