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Celery mosaic virus

Celery mosaic virus (CeMV)
Virus classification
Group: Group IV ((+)ssRNA)
Order: Unassigned
Family: Potyviridae
Genus: Potyvirus
Species: Celery mosaic virus
Synonyms
  • Apium virus 1
  • Western celery mosaic virus(WCeMV)
  • Celery crinkle-leaf virus
  • Celery ringspot virus
  • Poison hemlock ringspot virus

Celery mosaic virus (CeMV) is a plant pathogenic virus in the genus Potyvirus and the virus family Potyviridae .

In California (USA), mosaic diseases of celery (Apium graveolens) were reported as early as 1922. After some time, it became clear that there were at least two different viruses causing mosaic diseases with similar symptoms in celery.

These two viruses were first differentiated by host range. One of the viruses had a wide host range and was named Southern celery mosaic. The second had a host range restricted to the family Umbelliferae (Apiaceae) and was called Western celery mosaic. Continued research showed that the Southern mosaic virus was actually an isolate of Cucumber mosaic virus and Western celery mosaic eventually became known simply as Celery mosaic virus.

Symptoms of celery mosaic virus include a distinct mottled pattern on the leaves, distorted leaf growth with exaggerated rosette formation. Some strains of celery mosaic virus cause a "crinkled" pattern to form on the leaves of the plant. Oftentimes, plants infected with celery mosaic virus early in their development do not produce useable crops. Plants infected by the virus late in their development may provide useable crops provided that the crops are harvested quickly after infection.

Celery is the most common host of this virus. As the name implies, this virus causes a mosaic or mottling in the leaves of celery. There can also be malformation of leaflets. In older leaves, chorotic/necrotic spots may occur and the plants can be stunted. (see symptoms description)

Viral Inclusions of Celery mosaic virus.

In addition to celery, this virus has been identified in other important crops in the Apiaceae including carrots (Daucus carota), coriander (Coriandrum sativum), parsley (Petroselinum crispum), parsnip (Pastinaca sativa), and dill (Anethum graveolens). It has also been identified in several weed species in the Apiaceae family, including poison hemlock (Conium maculatum), mock bishopweed (Ptilimnium capillaceum) and wild cherry (Apium leptophyllum).


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