R.J. Reynolds Tobacco Company , R.J. Reynolds Tobacco Company, Bugwood.org
licensed under a Creative Commons Attribution 3.0 License.
licensed under a Creative Commons Attribution 3.0 License.
Image Number: 1440035
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Symptoms
Description:
The initial symptom of TVMV infection is a slight, barely visible clearing on expanding leaves. Subsequently, leaves develop irregular green patterns of mottling adjacent to the veins; this is most evident on the ruffles at the base of older leaves. Chlorosis of infected leaves is extensive, giving the plants a pale green or yellow appearance which may be evident from a distance. Necrotic spotting of the leaf, indistinguishable from weather fleck, may develop and become increasingly prevalent as plants mature. The earlier that plants are infected with the virus, the greater the damage. The virus overwinters in perennial solanaceous weeds and is transmitted to tobacco by aphids. The virus is often found in combination with TEV. TVMV is also one of the most prevalent viruses in burley.
Image type:
Field
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Subject
| Kingdom: Viruses |
| Phylum: |
| Class: Single-stranded, positive-sense, RNA (Group IV) |
| Order: Unassigned single stranded positive-sense RNA viruses |
| Family: Potyviridae |
| Genus: Potyvirus |
| Subject: Potyvirus TVMV |
Host
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Asteridae |
| Order: Solanales |
| Family: Solanaceae |
| Genus: Nicotiana |
| Subject: Nicotiana tabacum (burley type) L. |
Node Affiliation:
Image uploaded:
Monday, January 1, 1990
Image last updated:
Friday, February 4, 2011
