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First report of Sweet potato leaf curl virus infecting sweet potato in Sudan.

Mohammed, H. S. ; El-Siddig, M. A. ; El-Hussein, A. A. ; Ibrahim, F. A. ; Navas-Castillo, J. ; Fiallo-Olivé, E.

Plant Disease 2017 Vol 101 No. 5 pp. 849-850;

Abstract

In October 2016, generalized leaf curl symptoms were observed in a sweet potato field of the local cultivar Baladi in Khartoum State, Sudan. Leaf samples from 14 symptomatic plants were collected and total nucleic acids were extracted. All samples were positive by dot-blot hybridization using a digoxigenin-labeled probe targeting the coat protein gene of an isolate of the sweepovirus Sweet potato leaf curl virus (SPLCV) from Spain. This finding was further confirmed by nucleotide sequences analysis. This report, the first confirming the presence of SPLCV in Africa, and the partial sequences reported from Kenya, suggest that SPLCV could be more widespread than currently recognized in this continent.