Describe TMV as a plant viral vector.

Tobacco Mosaic Virus (TMV) has become one of the most widely used plant viral vectors in recombinant DNA technology. TMV is a positive-sense single-stranded RNA virus that primarily infects tobacco and other related plants. Its ability to infect a broad range of plants and its relatively simple structure have made it an ideal tool in plant biotechnology, particularly for gene expression studies and the development of genetically modified plants.

TMV is a member of the Tobamovirus genus, characterized by a rod-shaped, helix-like structure. Its genome consists of a single strand of RNA that encodes several proteins necessary for viral replication and assembly. TMV is naturally transmitted by mechanical means, such as contact with infected plant tissue, and is notorious for its ease of spreading, making it a convenient candidate for use in molecular biology.

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