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Sagot :
Tobacco Mosaic Virus (TMV) will not multiply unless it is brought in contact with a living cell and once it contacts the living cell it will not stop its multiplication.
Answer:
Strengths: crystallization potential
Weaknesses: dependent on the host plant
Explanation:
Smoke mosaic viruses caused by TMV (Tobacco mosaic virus) infect several plants. Symptoms induced by tobacco mosaic virus (TMV) are somewhat dependent on the host plant and may include mosaic mottling, necrosis, dwarfism, leaf curl, and yellowing of plant tissues.
The tobacco mosaic virus (TMV) was first observed by scientist Wendel Stanley (1904-1971).
This scientist, awarded the Nobel Prize in Chemistry in 1946, discovered the crystallization potential of TMV and the ability to infect and spread the virus in healthy plants (Tobacco) even after an extended period of latency.
From application and development, using electron microscopy, it was possible to verify that this virus manifests an external composition formed by a protein capsule, consisting of helically arranged globular proteins lining an RNA strand.
Normally, the most common consequence of viral action is related to plant development (decline in growth rate), ie contaminated plants grow less than healthy ones.
The mechanism of viral transmission is quite distinct, can occur through agents that inoculate the disease (a vector: insect, fungus and nematode), through pollen and seeds containing the virus, and even through a mechanism called diffusion. mechanized, where the crystallized virus settles in subsequent botanical specimens due to man-induced manipulation (mechanization in large crops).
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