Wheat yellow leaf virus

{{Short description|Species of virus}}

{{virusbox

| name = Wheat yellow leaf virus

| parent = Closterovirus

| species = Closterovirus flavitritici

}}

Wheat yellow leaf virus (WYLV) is a wheat (Triticum spp. L.), barley (Hordeum vulgare L.), rye (Secale cereale M.Bieb.), and oat (Avena sativa L.) pathogenic virus of the family Closteroviridae.{{cite journal |last=Fauquet |first=M. C. |author2=M. A. Mayo |title=Abbreviations for plant virus names – 1999 |journal=Archives of Virology |volume=144 |issue=6 |pages=1249–1273 |publisher=Springer Wien |location=The Netherlands |date=1999 |doi=10.1007/s007050050584 |pmid=10446658|s2cid=33505109 |doi-access=free }} WYLV virions are 1600–1850 nm in length and 10 nm in diameter.{{cite book |editor1-last=Lapierre |editor1-first=H. |editor2-last=Signoret |editor2-first=P. A. |title=Viruses and Virus diseases of Poaceace (Gramineae) |publisher=Institut National de la Recherche Agronomique |date=2004 |location=France |pages=605 |isbn=978-2-7380-1088-9}}{{cite journal |last=Coffin |first=R. S. |author2=R. H. A. Coutts |title=The closteroviruses, capilloviruses and other similar viruses: a short review |journal=Journal of General Virology |volume=74 |pages=1475–1483 |publisher=Society for General Microbiology |location=United Kingdom |date=1993 |doi=10.1099/0022-1317-74-8-1475 |pmid=8345345 |issue=8|doi-access=free }} The virus, like other members of its genus, is transmitted by aphids. Identified vectors include Rhopalosiphum padi L. and R. maidis Fitch. (Aphididae).{{cite book |last=Vidhyasekaran |first=Perumal |title=Concise Encyclopedia of Plant Pathology |url=https://archive.org/details/conciseencyclope00vidh |url-access=limited |publisher=CRC Press |date=2004 |pages=[https://archive.org/details/conciseencyclope00vidh/page/n581 563] |isbn=978-1-56022-943-8}} 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 (Chlorosis), causing the leaves to yellow and the plant to die.