Abstract

Tobamoviruses are rod shaped RNA plant viruses of the genus Tobamovirus family Virgaviridae. Tobamovirus associated plant disease was first recorded in India during 1947. Of the 35 tobamovirus species known in the different parts of the world, only eight have been documented in India: Cucumber green mottle mosaic virus (CGMMV), Frangipani mosaic virus (FrMV), Odontoglossum ringspot virus (ORSV), Pepper mild mottle virus (PMMoV), Plumeria mosaic virus (PluMV), Sunn-hemp mosaic virus (SHMV), Tobacco mosaic virus (TMV) and Tomato mosaic virus (ToMV). CGMMV is the most commonly occurring tobamovirus infecting several cucurbits such as bottle gourd, cucumber, watermelon, muskmelon, gherkin, ash gourd, snake gourd and sponge gourd. SHMV infects leguminous plants, TMV and ToMV are important in tomato and pepper and PMMoV is known to infect only pepper, whereas, the other three viruses are known to infect ornamental plants. PluMV, the recently identified in temple tree or frangipani (P. rubra f. acutifolia and P. obtusa) is the only tobamovirus species originally recorded in India. The present review summarises the research work carried out on the characterisation of tobamoviruses occurring in India.

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