The Merging of Two Dynasties—Identification of an African Cotton Leaf Curl Disease-Associated Begomovirus with Cotton in PakistanReport as inadecuate




The Merging of Two Dynasties—Identification of an African Cotton Leaf Curl Disease-Associated Begomovirus with Cotton in Pakistan - Download this document for free, or read online. Document in PDF available to download.

Cotton leaf curl disease CLCuD is a severe disease of cotton that occurs in Africa and Pakistan-northwestern India. The disease is caused by begomoviruses in association with specific betasatellites that differ between Africa and Asia. During survey of symptomatic cotton in Sindh southern Pakistan Cotton leaf curl Gezira virus CLCuGV, the begomovirus associated with CLCuD in Africa, was identified. However, the cognate African betasatellite Cotton leaf curl Gezira betasatellite was not found. Instead, two Asian betasatellites, the CLCuD-associated Cotton leaf curl Multan betasatellite CLCuMB and Chilli leaf curl betasatellite ChLCB were identified. Inoculation of the experimental plant species Nicotiana benthamiana showed that CLCuGV was competent to maintain both CLCuMB and ChLCB. Interestingly, the enations typical of CLCuD were only induced by CLCuGV in the presence of CLCuMB. Also in infections involving both CLCuMB and ChLCB the enations typical of CLCuMB were less evident. This is the first time an African begomovirus has been identified on the Indian sub-continent, highlight the growing threat of begomoviruses and particularly the threat of CLCuD causing viruses to cotton cultivation in the rest of the world.



Author: Muhammad Nouman Tahir, Imran Amin, Rob W. Briddon, Shahid Mansoor

Source: http://plos.srce.hr/



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