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Article Dans Une Revue Archives of Virology Année : 2012

A survey of geminiviruses and associated satellite DNAs in the cotton-growing areas of northwestern India

Résumé

Severe symptoms of cotton leaf curl disease (CLCuD) are caused by the association of a single-stranded circular DNA satellite (betasatellite) with a helper begomovirus. In this study, we analyzed 40 leaf samples (primarily cotton with CLCuD symptoms and other plants growing close by) from four sites between New Delhi and the Pakistan/India border, using rolling-circle amplification (RCA) and PCR. In total, the complete sequences of 12 different helper viruses, eight alphasatellites, and one betasatellite from five different plant species were obtained. A recombinant helper virus molecule found in okra and a novel alphasatellite-related DNA from croton are also described. This is the first report of the presence of both DNA components (helper virus and betasatellite) associated with resistance-breaking CLCuD in India, and it highlights the need for further work to combat its damage and spread.
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Dates et versions

hal-02651901 , version 1 (29-05-2020)

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Paternité - Pas d'utilisation commerciale

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Valerio Zaffalon, Sunil Kumar Mukherjee, Vanga Siva Reddy, Jeremy R. Thompson, Mark Tepfer. A survey of geminiviruses and associated satellite DNAs in the cotton-growing areas of northwestern India. Archives of Virology, 2012, 157 (3), pp.483-495. ⟨10.1007/s00705-011-1201-y⟩. ⟨hal-02651901⟩
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