Tobacco Mosaic Virus Flashcards

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What type of pathogen causes Tobacco Mosaic Virus (TMV) and what does it infect?

TMV is a virus that infects tobacco plants and many other plants, such as tomato plants.

Why is the disease called Tobacco Mosaic Virus?

It is called Tobacco Mosaic Virus because it was first found in tobacco plants and it causes a mosaic pattern on the leaves.

What is the main visible symptom of TMV on plant leaves?

The main symptom is a mosaic pattern of light and dark green patches on the leaves.

How can TMV affect the shape and colour of leaves?

Leaves can turn yellow, curl, and become distorted when they are infected with TMV.

How does TMV infection affect photosynthesis in a plant?

TMV damages the leaves, so there is less green chlorophyll. This reduces photosynthesis.

Why do plants infected with TMV often have stunted growth?

Because TMV reduces photosynthesis, the plant makes less glucose and energy, so it grows less and may be smaller.

How can Tobacco Mosaic Virus spread from plant to plant?

TMV can spread by direct contact between plants, by hands, by tools, and by other objects that touch infected plants.

Can TMV be cured once a plant is infected?

No. There is no cure for TMV, so infected plants stay infected and are often removed and destroyed.

How can farmers reduce the spread of TMV in their fields or greenhouses?

They can remove and burn infected plants, clean tools, wash hands, and use plant varieties that are resistant to TMV.

Does Tobacco Mosaic Virus infect humans or animals?

No. TMV only infects plants, not humans or other animals.

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