First report of cucumber green mottle mosaic virus association with the leaf green mosaic disease of a vegetable crop, Luffa acutangula L.

摘要

Cucumber green mottle mosaic virus (CGMMV), a member of the genus Tobamovirus is an economically significant seed transmitted pathogen infecting many cucurbit species. Crop yield losses of about 15% have been reported (I, 2). CGMMV contains a 6.4 kb (+) ssRNA genome (6). The virions are rod-shaped, approximately 300 nm in length and 18 nm in diameter (5). Ridge gourd (Luffa acutangula L.) is a vegetable crop commonly grown in India. It is known to get affected by several pathogens viz. virus, mycoplasma, bacteria and fungi. During the survey (March-September, 2012) of field crops, nearly 40-50% of ridge gourd plants showing the typical symptoms of Tobamovirus infection, i.e. systemic mosaic and mottling on leaves, blistering and deterioration of fruit pulp were observed in Rajasthan, India.