An Unwanted Association: The Threat to Papaya Crops by a Novel Potexvirus in Northwest Argentina
oleh: Dariel Cabrera Mederos, Humberto Debat, Carolina Torres, Orelvis Portal, Margarita Jaramillo Zapata, Verónica Trucco, Ceferino Flores, Claudio Ortiz, Alejandra Badaracco, Luis Acuña, Claudia Nome, Diego Quito-Avila, Nicolas Bejerman, Onias Castellanos Collazo, Aminael Sánchez-Rodríguez, Fabián Giolitti
| Format: | Article |
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| Diterbitkan: | MDPI AG 2022-10-01 |
Deskripsi
An emerging virus isolated from papaya (<i>Carica papaya</i>) crops in northwestern (NW) Argentina was sequenced and characterized using next-generation sequencing. The resulting genome is 6667-nt long and encodes five open reading frames in an arrangement typical of other potexviruses. This virus appears to be a novel member within the genus <i>Potexvirus</i>. Blast analysis of <i>RNA-dependent RNA polymerase</i> (RdRp) and <i>coat protein</i> (CP) genes showed the highest amino acid sequence identity (67% and 71%, respectively) with pitaya virus X. Based on nucleotide sequence similarity and phylogenetic analysis, the name papaya virus X is proposed for this newly characterized potexvirus that was mechanically transmitted to papaya plants causing chlorotic patches and severe mosaic symptoms. Papaya virus X (PapVX) was found only in the NW region of Argentina. This prevalence could be associated with a recent emergence or adaptation of this virus to papaya in NW Argentina.