Vegetable Disease Identification: Celery Mosaic

Alan McNab
Professor of Plant Pathology

CELERY: Mosaic
	Mosaic can be caused by several viruses including cucumber mosaic virus (CMV) and celery mosaic virus (CeMV). Symptoms caused by these two viruses are similar and it may be difficult to distinguish the two diseases on the basis of symptoms.
Full-size Version	Cucumber Mosaic Virus causes a mottling of celery leaflets and sunken, buff-colored streaks and spots on petioles. CMV has a wide host range and overwinters in many cultivated and wild plants. CMV is spread by aphids and by mechanical means.
Full-size Version	Celery Mosaic Virus infected plants usually are stunted and have a flattened appearance. Leaflets often exhibit a prominent mosaid, although sometimes only a faint mottle will appear. Leaflets often are considerably more narrow than normal. Sometimes the leaflet margins curl upward and raised areas occur on upper leaf surfaces. Foliage on some plants is yellow or bronze. Petiole mottling frequently appears as light patches against a darker background. CeMV affects only celery, carrot, and closely related weeds. CeMV is spread by aphids and by mechanical means.

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Last modified Tuesday, March 6, 2007