Tomato leaf curl Joydebpur virus: a monopartite begomovirus causing severe leaf curl in tomato in West Bengal

Tomato leaf curl Joydebpur virus: a monopartite begomovirus causing severe leaf curl in tomato in... A begomovirus was isolated from tomato plants showing leaf curl and stunting symptoms in farmers’ fields near the district of Kalyani, West Bengal, India. Viral genomic components amplified by rolling-circle amplification were cloned and sequenced. The genome organization of this virus was found to be similar to those of Old World monopartite begomovirus, with DNA A and a betasatellite component. Neither alphasatellite nor DNA B component was detected. The begomovirus showed highest sequence identity of 93.6% to tomato leaf curl Joydebpur virus (ToLCJoV-(IN:Kal:Chi:06)) and was thus identified to be an isolate of ToLCJoV. The betasatellite isolated from these samples was identified as tomato leaf curl Joydebpur betasatellite. ToLCJoV-(IN:Kal:Tom:08) alone induced severe symptoms in Solanum lycopersicum , N. benthamiana and N. glutinosa plants, and its severity was enhanced when co-inoculated with the cognate betasatellite. ToLCJoV-(IN:Kal:Tom:08) trans -replicated four more non-cognate betasatellites and induced severe symptoms in N. benthamiana and tomato. Since DNA A replicated efficiently and caused systemic symptom expression, it is hypothesized that ToLCJoV is essentially a monopartite virus, which could have acquired a betasatellite from an unknown source. Archives of Virology Springer Journals

Tomato leaf curl Joydebpur virus: a monopartite begomovirus causing severe leaf curl in tomato in West Bengal

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Springer Vienna
Copyright © 2013 by Springer-Verlag Wien
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
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