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Question
Which one of these is a plant virus?
Which one of these is a plant virus?
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Solution
The correct option is A TMV
- Tobacco mosaic virus (TMV) is a positive-sense single-stranded RNA virus in genus Tobamovirus that infects a wide range of plants, especially tobacco and other members of the family Solanaceae.
- It is a simple rod-shaped helical virus) consisting of centrally located single-stranded RNA (5.6%) enveloped by a protein coat (94.4%). The protein coat is technically called ‘capsid’. R. Franklin estimated 2,130 sub-units, namely, capsomeres in a complete helical rod and 49 capsomeres on every three turns of the helix; thus there would be about 130 turns per rod of TMV.
- Hence TMV is a plant virus.
- So, the correct answer is 'TMV'
- Tobacco mosaic virus (TMV) is a positive-sense single-stranded RNA virus in genus Tobamovirus that infects a wide range of plants, especially tobacco and other members of the family Solanaceae.
- It is a simple rod-shaped helical virus) consisting of centrally located single-stranded RNA (5.6%) enveloped by a protein coat (94.4%). The protein coat is technically called ‘capsid’. R. Franklin estimated 2,130 sub-units, namely, capsomeres in a complete helical rod and 49 capsomeres on every three turns of the helix; thus there would be about 130 turns per rod of TMV.
- Hence TMV is a plant virus.
- So, the correct answer is 'TMV'
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