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Arch Virol. 2017 Jan;162(1):317-319. doi: 10.1007/s00705-016-3104-4. Epub 2016 Oct 11.

Complete genome sequence of a putative new secovirus infecting yam (Dioscorea) plants.

Author information

1
Laboratório de Fitovirologia, Departamento de Agronomia, Universidade Federal Rural de Pernambuco, Recife, PE, CEP 52171-900, Brazil.
2
Laboratório de Microscopia Eletrônica, Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, CEP 70910-900, Brazil.
3
Laboratório de Microscopia Eletrônica, Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, CEP 70910-900, Brazil. tatsuya@unb.br.

Abstract

The complete genome sequence of a new virus infecting yam plants exhibiting mosaic symptom in Brazil was determined. The genome of this virus is composed of two molecules of positive-sense RNAs of 5979 and 3809 nucleotides in length, excluding the poly(A) tails. One large open reading frame (ORF) in each genomic segment (RNA1-ORF1 and RNA2-ORF2) was predicted. The highest amino acid sequence similarity in the Pro-Pol core region of RNA1 and the CP region of RNA2 was observed with chocolate lily virus A (a putative member of the family Secoviridae), with 54.6 and 27.7 % identity, respectively. This virus is thus likely to be a new member of the family Secoviridae, and we propose the tentative name "dioscorea mosaic-associated virus" (DMaV) for this virus.

PMID:
27730382
DOI:
10.1007/s00705-016-3104-4
[Indexed for MEDLINE]

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