Wheat yellow leaf virus (WYLV) is a
wheat (''Triticum'' spp. L.),
barley (''Hordeum vulgare'' L.),
rye
Rye (''Secale cereale'') is a grass grown extensively as a grain, a cover crop and a forage crop. It is a member of the wheat tribe (Triticeae) and is closely related to both wheat (''Triticum'') and barley (genus ''Hordeum''). Rye grain is u ...
(''Secale cereale'' M.Bieb.), and
oat (''Avena sativa'' L.) pathogenic virus of the family ''
Closteroviridae
''Closteroviridae'' is a family of viruses. Plants serve as natural hosts. There are four genera and 59 species in this family, seven of which are unassigned to a genus. Diseases associated with this family include: yellowing and necrosis, parti ...
''.
WYLV virions are 1600–1850 nm in length and 10 nm in diameter.
The virus, like other members of its genus, is transmitted by aphids.
Identified
vectors include ''
Rhopalosiphum padi
Bird cherry-oat aphid (''Rhopalosiphum padi'') is an aphid in the superfamily Aphidoidea in the order Hemiptera. It is a true bug and sucks sap from plants. It is considered a major pest in cereal crops, especially in temperate regions, as well ...
'' L. and ''
R. maidis'' Fitch. (
Aphididae).
The virus has been identified in crop plants in Japan, China, and Italy.
Native host plants include Italian ryegrass (''
Festuca perennis'' Lam.) in Europe and
''Agropyron tsukushiense'' var. ''transiens'' Ohwi in Japan.
The virus proliferates in the
phloem of its host plants, interfering with the plant's ability to produce sufficient
chlorophyll
Chlorophyll (also chlorophyl) is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words , ("pale green") and , ("leaf"). Chlorophyll allow plants to a ...
(
Chlorosis), causing the leaves to yellow and the plant to die.
References
External links
ICTVdB - The Universal Virus Database: Wheat yellow leaf virus
Closteroviridae
Viral plant pathogens and diseases
{{Virus-plant-disease-stub