Tomato mosaic virus and

Tobacco mosaic virus history

If you’ve noticed an outbreak of leaf mottling along with blistering or leaf curl in the garden, then you may have plants affected by TMV. Tobacco mosaic damage is caused by a virus and is prevalent in a variety of plants. So exactly what is tobacco mosaic virus? Keep reading to find out more, as well as how to treat tobacco mosaic virus once it’s found.

What is Tobacco Mosaic Virus?

Although tobacco mosaic virus (TMV) is named for the first plant in which it was discovered (tobacco) back in the 1800s, it infects over 150 different types of plants. Among plants affected by TMV are vegetables, weeds and flowers. Tomato, pepper and many ornamental plants are struck annually with TMV. The virus does not produce spores but spreads mechanically, entering plants via wounds.

History of Tobacco Mosaic

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Two scientists made the discovery of the first virus, the Tobacco Mosaic Virus, in the late 1800’s. Although it was known to be a damaging infectious disease, tobacco mosaic was not identified as a virus until 1930.

Tobacco Mosaic Damage

Tobacco mosaic virus does not usually kill the plant that is infected; it does cause damage to flowers, leaves and fruit and stunts a plant’s growth, however. With tobacco mosaic damage, leaves may appear mottled with dark green and yellow-blistered areas. The virus also causes leaves to curl.

Symptoms tend to vary in severity and type depending on the light conditions, moisture, nutrients and temperature. Touching the infected plant and handling a healthy plant that may have a tear or nick, whereby the virus can enter, will spread the virus.

Pollen from an infected plant can also spread the virus, and seeds from a diseased plant can bring the virus to a new area. Insects that chew on plant parts may carry the disease as well.

How to Treat Tobacco Mosaic Disease

There has not yet been found a chemical treatment that effectively protects plants from TMV. In fact, the virus has been known to survive for up to 50 years in dried plant parts. The best control of the virus is prevention.

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