What type of disease is Mosaic?

mosaic, plant disease caused by various strains of several hundred viruses. A number of economically important crops are susceptible to mosaic infections, including tobacco, cassava, beet, cucumber, and alfalfa.

What disease causes mosaic?

The tobacco mosaic virus infects tobacco and lots of other closely related species like tomatoes and peppers. It is transmitted by contact between plants, either naturally or on the hands of farmers. It infects the chloroplasts of plant leaves and changes their colour from green to yellow or white in a mosaic pattern.

Is mosaic a virus?

A mosaic virus is any virus that causes infected plant foliage to have a mottled appearance. Such viruses come from a variety of unrelated lineages and consequently there is no taxon that unites all mosaic viruses.

Is Mosaic disease a virus or bacteria?

TMV was the first virus to be discovered. Although it was known from the late 19th century that a non-bacterial infectious disease was damaging tobacco crops, it was not until 1930 that the infectious agent was determined to be a virus.

Tobacco mosaic virus
Genus: Tobamovirus
Species: Tobacco mosaic virus
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What is meant by mosaic disease?

/ (məˈzeɪɪk) / noun. a serious viral disease of plants, esp tobacco, maize, and sugar cane, in which the leaves become mottled by discoloration.

What is mosaic pathology?

Mosaic: A person or a tissue that contains two or more types of genetically different cells. All females are mosaics because of X-chromosome inactivation (lyonization). Mosaic patterns can affect the way genetic disorders are expressed.

What is leaf mosaic?

A leaf mosaic can be defined as an arrangement of the leaves of a single plant which tends to decrease the shading of one leaf by another and to fill the space available for light interception.

Is mosaic a plant disease?

mosaic, plant disease caused by various strains of several hundred viruses. A number of economically important crops are susceptible to mosaic infections, including tobacco, cassava, beet, cucumber, and alfalfa.

Is mosaic virus contagious?

Tomato mosaic virus is a serious and extremely contagious disease. It is also hard to identify, with symptoms varying wildly depending upon the variety and age of the infected plant, the strain of the virus, and environmental conditions.

Is mosaic virus harmful to humans?

“These viruses are specific to plants and do not harm humans. The presence of mosaic won’t cause fruits to rot prematurely but severely distorted fruit will have a different texture, so use your own judgement.”

Who gave name virus?

The name virus was coined by Martinus Willem Beijerinck.

Who invented virus?

Virulent, from Latin virulentus (‘poisonous’), dates to c. 1400. A meaning of ‘agent that causes infectious disease’ is first recorded in 1728, long before the discovery of viruses by Dmitri Ivanovsky in 1892.

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Which of the following are bacterial diseases?

Other serious bacterial diseases include cholera, diphtheria, bacterial meningitis, tetanus, Lyme disease, gonorrhea, and syphilis.

How many types of mosaic viruses are there?

What Are Mosaic Viruses? Mosaic viruses affect more than 150 types of plants, including many fruits, vegetables, and flowers. The disease is characterized by leaves that are mottled with yellow, white, and light or dark green spots and streaks (in other words, a “mosaic” of these colors).

What type of pathogen causes measles?

The pathogen

The measles virus is a single-stranded RNA virus of the genus Morbillivirus and the family Paramyxoviridae.

What kind of disease is chlorosis yellowing of leaves?

When we say “chlorosis,” we’re generally talking about iron deficiency, a nutrient deficiency that causes leaves to yellow in a particular way. Iron chlorosis is “interveinal,” meaning the yellowing occurs in leaf tissue between the leaf’s veins.