Apium virus Y sea celery ("Apium prostratum"), cilantro ("Coriandrum sativum"), and bishop’s weed ("Ammi majus"). In Germany it has recently been found naturally infecting celeriac or celery root. All are members of the plant family "Apiaceae". Symptoms reported included mosaic, vein clearing or banding, necrotic/chlorotic line patterns and stunting. Some samples of parsley, celery and poison hemlock, that gave positive results in tests, however, were asymptomatic. In host range studies, the virus causes local lesions on "Chenopodium quinoa" and "C. amaraticolor" ("Amaranthaceae"). Apium virus Y "Apium virus Y" (ApVY) is a plant pathogenic virus in the genus "Potyvirus" and the virus family "Potyviridae".
Celery mosaic virus also affects umbelliferous plants, removal of umbelliferous weeds, like wild celery and wild parsnip, helps to control aphid populations. Celery grown in fields that have been host free for 2–3 months show greatly reduced risk of exposure to CeMV. Many studies have shown reduced virus outbreaks and severity in fields treated with reflective mulch which can provide unappealing visual stimuli to infected aphids. Fields treated with this mulch experience reduced infection rates. The complete genome of Celery Mosaic Virus was sequenced in 2011. It was found to be 9999 nucleotides in length, encoding for 3181 amino acids in a single