Table of Contents
Who does TMV infect?
Tobacco mosaic virus (TMV) is named for one of the first plants in which it was found in the 1800s. However, it can infect well over 350 different species of plants.
What is the TMV virus and what does it attack?
The tobacco mosaic virus can attack a wide range of plants, including tomato, pepper, eggplant, tobacco, spinach, petunia and marigold. On tomato, virus infection causes light and dark green mottled areas on the leaves. The dark green areas tend to be somewhat thicker than the lighter portions of the leaf.
What does TMV do to humans?
Tobacco mosaic virus (TMV), a widespread plant pathogen, is found in tobacco (including cigarettes and smokeless tobacco) as well as in many other plants. Plant viruses do not replicate or cause infection in humans or other mammals.
Where is TMV most common?
It occurs in all tobacco production areas, where susceptible varieties are grown and it causes serious loss. TMV is feared in many Asian countries (China, Thailand, Vietnam …) and Oceania (Indonesia, Australia …). Many countries in the Americas are highly infected (Argentina, Brazil, some U.S. states).
Who first crystallized virus?
We will look at Wendell Meredith Stanley, who reported the first virus in crystalline form on June 28, 1935.
What species of plant is often attacked by TMV?
The tobacco mosaic virus attacks plants in the families that include tomato, pepper, eggplant, tobacco, spinach, petunia, and marigold. Many modern vegetable varieties have been developed to resist this virus.
Is DNA present in TMV?
TMV is a ribovirus and the genetic material of TMV was found out by a scientist named Frankel Conart. TMV has absolutely no DNA present in its genetic material.
What did Wendell Stanley discover?
For this discovery, Dr. Stanley received the 1946 Nobel Prize in Chemistry. The Laboratory of Animal and Plant Pathology at The Rockefeller Institute for Medical Research was in the forefront of research in virology, and principal investigator Louis O.
How is the mosaic virus ( TMV ) transmitted?
tobacco mosaic virus (TMV) A rigid rod-shaped RNA-containing virus that causes distortion and blistering of leaves in a wide range of plants, especially the tobacco plant. It is transmitted by insects when they feed on plant tissue.
Where does the TMV virus enter a plant?
A wounded plant cell provides a site of entry for TMV. The virus can also contaminate seed coats, and the plants germinating from these seeds can become infected.
What are the three processes of TMV infection?
Successful systemic infection of a plant by Tobacco mosaic virus (TMV) requires three processes that repeat over time: initial establishment and accumulation in invaded cells, intercellular movement, and systemic transport.
How is TMV transmitted from person to person?
TMV is very easily transmitted when an infected leaf rubs against a leaf of a healthy plant, by contaminated tools, and occasionally by workers whose hands become contaminated with TMV after smoking cigarettes. A wounded plant cell provides a site of entry for TMV.