Question

What is the shape of T.M.V.? What is its genetic material?

Answer 1

Viruses are microscopic parasites and contagious sellers with residing and non-living characteristics. These viruses can infect plants, animals, and different microorganisms.

Complete answer:
Viruses are non-cellular, microscopic, and infectious marketers that stay by way of relying upon the host cell They incorporate genetic material as RNA or DNA and proteins; they invade and reproduce through using organisms, plants, and animal cell organelles as they lack the required cell material.

The TMV was the first pathogen recognized as a virus. The tobacco mosaic virus (TMV) is a single stranded RNA virus that belongs to the Tobamovirus genus, which is recognised to infect a huge range of plants, particularly the tobacco plant and other contributors of the Solanaceae family. This virus motives an contamination that has a characteristic mosaic-like molting pattern.

This mosaic-like sample is additionally formed with the aid of the discoloration of the leaves and consequently it acquires its name the Tobacco mosaic virus. Like different plant viruses, TMV has a very large variety of plant hosts which it can infect and has specific signs depending on the host. The tobacco mosaic virus has been known to motivate a production loss for flue-cured tobacco.

Structure of TMV:
- TMV possesses a rod-like appearance. Its capsid is made from 2130 molecules of lined proteins called capsomeres and one molecule of genomic single stranded RNA.
- All the capsomeres (coat protein) are organized and are developed into a rod-like helical structure. It consists of 6.3 - 6.5 kb single stranded RNA genomes.
- The 3'-terminus of the genome of this virus has tRNA (transfer ribonucleic acid) like look and 5'- terminus of the genome of this virus has a methylated nucleotide cap.

Note: Bacteriophage replicates and also multiplies inside the bacterial cell with the help of a cycle either a lytic or lysogenic cycle. These Bacteriophages are highly specific for their target bacteria, and it is essential against multi-resistant pathogens.