A potyvirus isolated from Mirabilis jalapa in China represents a new species.

Arch Virol

School of Life Sciences, Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest of Yunnan Province, Yunnan University, Kunming, 650091, China.

Published: February 2020

We previously reported a possible potyvirus isolated from Mirabilis jalapa that exhibited a high degree of sequence similarity to Basella rugose mosaic virus (BaRMV) in the region encoding the coat protein (CP). Here, we present the complete genome sequence of this isolate, comprising a 9666-nucleotide-long monopartite ssRNA (excluding the poly(A) tail) encoding a 3080-amino-acid polyprotein. The CP region showed a high degree of nucleotide sequence similarity to three BaRMV isolates (75.2-77.3% identity), while other regions showed nucleotide sequence identity values (48.8-73.7%) below the species demarcation threshold proposed by the ICTV. Therefore, we propose that this isolate be considered a new member of the genus Potyvirus, tentatively named "mirabilis crinkle mosaic virus" (MiCMV).

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http://dx.doi.org/10.1007/s00705-019-04453-0DOI Listing

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