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Molecular characterisation of a putative new polerovirus infecting pumpkin (Cucurbita pepo) in Kenya
Dawit B Kidanemariam1,2, Amit C Sukal1, Adane D Abraham3
1Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, 4001, Australia.
Abstract:
Next-generation sequencing of RNA extracted from a pumpkin plant with mosaic symptoms in Kenya identified the presence of a polerovirus sequence closely related to pepo aphid-borne yellows virus (PABYV). The near-complete polerovirus sequence comprised 5,810 nucleotides and contained seven putative open reading frames (ORFs) with a genome organisation typical of poleroviruses. BLASTp analysis of the translated sequences of ORFs 0, 1 and 2 revealed that their amino acid sequences differed by more than 10% from the corresponding protein sequences of other poleroviruses. These results suggest that this virus is a putative novel member of the genus Polerovirus, which has been provisionally named "pumpkin polerovirus" (PuPV).
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