''Turnip yellow mosaic virus'' (TYMV) is an isometric ''

Tymovirus ''Tymovirus'' is a genus of viruses in the order ''Tymovirales'', in the family ''Tymoviridae''. Plants serve as natural hosts. There are 28 species in this genus. Taxonomy The genus contains the following species: * ''Anagyris vein yellowing ...

'' of the family ''

Tymoviridae ''Tymoviridae'' is a family of single-stranded positive sense RNA viruses in the order ''Tymovirales''. Plants serve as natural hosts. There are 42 species in this family, assigned to three genera, with two species unassigned to a genus. Taxono ...

''. Its

host range In biology and medicine, a host is a larger organism that harbours a smaller organism; whether a parasitic, a mutualistic, or a commensalist ''guest'' (symbiont). The guest is typically provided with nourishment and shelter. Examples include a ...

is confined almost entirely to plants in the genus ''

Brassica ''Brassica'' () is a genus of plants in the cabbage and mustard family (Brassicaceae). The members of the genus are informally known as cruciferous vegetables, cabbages, or mustard plants. Crops from this genus are sometimes called ''cole cr ...

'' in western

Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...

, which includes

cabbage Cabbage, comprising several cultivars of ''Brassica oleracea'', is a leafy green, red (purple), or white (pale green) biennial plant grown as an annual vegetable crop for its dense-leaved heads. It is descended from the wild cabbage ( ''B.&nb ...

cauliflower Cauliflower is one of several vegetables in the species ''Brassica oleracea'' in the genus ''Brassica'', which is in the Brassicaceae (or mustard) family. It is an annual plant that reproduces by seed. Typically, only the head is eaten – the ...

and

broccoli Broccoli (''Brassica oleracea'' var. ''italica'') is an edible green plant in the cabbage family (family Brassicaceae, genus ''Brassica'') whose large flowering head, stalk and small associated leaves are eaten as a vegetable. Broccoli is cl ...

. Infection causes bright yellow mosaic disease showing vein clearing and molting of plant tissues.

Transmission

It is transmitted by sap as well as a host of insect vectors. The most prominent of these are in the ''

Phyllotreta ''Phyllotreta'' is a genus of flea beetles in the family Chrysomelidae. There are at least 300 described species worldwide.https://www.zin.ru/animalia/coleoptera/addpages/Nadein/Phyllotr.htm Agricultural pests Many species have been recorded ...

'' and ''

Psylliodes ''Psylliodes'' is a large genus of flea beetles in the family Chrysomelidae. There are about 200 described species worldwide. Selected species * '' Psylliodes affinis'' (Paykull, 1799) (potato flea beetle) * ''Psylliodes chalcomera'' (Illiger, 1 ...

'' genera of

flea beetle The flea beetle is a small, jumping beetle of the leaf beetle family (Chrysomelidae), that makes up the tribe Alticini which is part of the subfamily Galerucinae. Historically the flea beetles were classified as their own subfamily. Though m ...

s, although ''

Phaedon cochleariae ''Phaedon cochleariae '' (commonly called mustard beetle or watercress beetle) is a species of leaf beetle native to Europe.Warchalowski, A. (2003) ''Chrysomelidae. The Leaf-beetles of Europe and the Mediterranean Area''. Warsawa: Natura Optima D ...

'' and its

larva A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. The ...

have also been known to help spread this virus. The larva lose their ability to transmit the disease once they reach the

pupa A pupa ( la, pupa, "doll"; plural: ''pupae'') is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their ...

l stage, suggesting a mechanical infection process.

References

External links

ICTVb Description

Tymoviridae Viral plant pathogens and diseases {{Virus-plant-disease-stub