doi:10.1038/nindia.2011.84 Published online 20 June 2011
Researchers have found that a variant of the Tomato leaf curl New Delhi virus (ToLCVND) is now causing yellow mosaic disease in a new agriculturally important host, the eggplant.
Begomoviruses have emerged as serious problem for vegetable and fiber crops in tropical and subtropical region of the world. A survey in the central Indian city of Nagpur in 2009-2010 showed severe incidence of eggplant yellow mosaic disease.
The researchers identified and characterized the begomovirus responsible for the newly emerging yellow mosaic disease of eggplant in India. They cloned and sequenced the complete DNA-A and DNA-B genomic components of the causative virus. Nucleotide sequence analysis of DNA-A showed that it shared highest identity with ToLCNDV-India [India:Udaipur:Okra:2007].
The researchers have named the virus ToLCNDV-IN[IN:Nag:Egg:09] and confirmed that it induced characteristic yellow mosaic symptoms in eggplants and leaf curling in tomato plants.