Image Number: 1402027

Descriptor:
Symptoms
Description:
The first symptom of this virus disease is a light green coloration between the veins of young leaves. This is followed quickly by the development of a "mosaic" or mottled pattern of light and dark green areas in the leaves. These symptoms develop quickly and are more pronounced on younger leaves. Mosaic does not result in plant death, but if infection occurs early in the season, plants are stunted. Lower leaves are subject to "mosaic burn," especially during periods of hot and dry weather. In these cases, large dead areas develop in the leaves. This constitutes one of the most destructive phases of tobacco mosaic virus infection. Infected leaves may be crinkled, puckered, or elongated.
Image type:
Field

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Image location:
United States

Subject

Kingdom: Viruses
Phylum: Viruses
Class: Single-stranded, positive-sense, RNA (Group IV)
Order: Unassigned single stranded positive-sense RNA viruses
Family: Tobmosviridae
Genus: Tobamovirus
Subject: Tobamovirus TMV

Host

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Solanales
Family: Solanaceae
Genus: Nicotiana
Subject: Nicotiana tabacum (flue-cured type) L.
Node Affiliation:
Image uploaded:
Sunday, March 10, 2002
Image last updated:
Friday, May 6, 2011