Image Number: 1440041

The most distinguishing symptom of alfalfa mosaic virus is a bright yellow mosaic of the affected leaves, however, not all strains of the virus produce this symptom. Chlorotic line patterns similar to the symptoms of tobacco ringspot are common. Chlorotic blotches and vein clearing of expanding leaves are often present. The virus overwinters in legumes and is transmitted to tobacco by aphids. AMV is found infrequently in burley.
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Image location:
United States


Kingdom: Viruses
Phylum: Viruses
Class: Single-stranded, positive-sense, RNA (Group IV)
Order: Unassigned single stranded positive-sense RNA viruses
Family: Bromoviridae
Genus: Alfamovirus
Subject: Alfamovirus AMV


Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Solanales
Family: Solanaceae
Genus: Nicotiana
Subject: Nicotiana tabacum (burley type) L.
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Image uploaded:
Monday, January 1, 1990
Image last updated:
Friday, December 10, 2010