Data/hora: 10/06/2024 14:16:29

Biblioteca(s): | Embrapa Hortaliças; Embrapa Recursos Genéticos e Biotecnologia.
Data corrente: | 17/09/2020
Data da última atualização: | 16/12/2020
Autoria: | NERY, F. M. B.; MELO, F. L.; BOITEUX, L. S.; RIBEIRO, S. da G.; RESENDE, R. O.; ORÍLIO, A. F.; BATISTA, J. G.; LIMA, M. F.; PEREIRA-CARVALHO, R. C.
Afiliação: | FLÁVIA M. B. NERY, UNIVERSIDADE DE BRASÍLIA; FERNANDO L. MELO, UNIVERSIDADE DE BRASÍLIA; LEONARDO SILVA BOITEUX, CNPH; SIMONE DA GRACA RIBEIRO, Cenargen; RENATO O. RESENDE, UNIVERSIDADE DE BRASÍLIA; ANELISE F. ORÍLIO, UNIVERSIDADE DE BRASÍLIA; JOSIANE G. BATISTA, UNIVERSIDADE DE BRASÍLIA; MIRTES FREITAS LIMA, CNPH; RITA C. PEREIRA-CARVALHO, UNIVERSIDADE DE BRASÍLIA.
Título: | Molecular characterization of Hovenia Dulcis-associated virus 1 (HDaV1) and 2 (HDaV2): new tentative species within the Order Picornavirales.
Ano de publicação: | 2020
Fonte/Imprenta: | Viruses, v. 12, n. 9, 950, 2020
DOI: | https://doi.org/10.3390/v12090950
Idioma: | Inglês
Conteúdo: | In a systematic field survey for plant-infecting viruses, leaf tissues were collected from trees showing virus-like symptoms in Brazil. After viral enrichment, total RNA was extracted and sequenced using the MiSeq platform (Illumina). Two nearly full-length picorna-like genomes of 9534 and 8158 nucleotides were found associated with Hovenia dulcis (Rhamnaceae family). Based upon their genomic information, specific primers were synthetized and used in RT-PCR assays to identify plants hosting the viral sequences. The larger contig was tentatively named as Hovenia dulcis-associated virus 1 (HDaV1), and it exhibited low nucleotide and amino acid identities with Picornavirales species. The smaller contig was related to insect-associated members of the Dicistroviridae family but exhibited a distinct genome organization with three non-overlapping open reading frames (ORFs), and it was tentatively named as Hovenia dulcis-associated virus 2 (HDaV2). Phylogenetic analysis using the amino acid sequence of RNA-dependent RNA polymerase (RdRp) revealed that HDaV1 and HDaV2 clustered in distinct groups, and both viruses were tentatively assigned as new members of the order Picornavirales. HDaV2 was assigned as a novel species in the Dicistroviridae family. The 50 ends of both viruses are incomplete. In addition, a nucleotide composition analysis (NCA) revealed that HDaV1 and HDaV2 have similarities with invertebrate-infecting viruses, suggesting that the primary host(s) of these novel virus species remains to be discovered.
Palavras-Chave: | HDaV1; HDaV2; Virome.
Thesagro: | Hovenia Dulcis.
Thesaurus Nal: | Metagenomics; Picornavirales; Viruses.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/219297/1/ARTIGO-MolecularCharacterizationHoveniaDulcis.pdf
Registro original: | Embrapa Hortaliças (CNPH)

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CENARGEN - (38268-1) - UPC - AP - DD -  -  -  - DIS
CNPH - (41441-1) - UPC - AP - DD -  -  -  - DIS