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An Unwanted Association: The Threat to Papaya Crops by a Novel Potexvirus in Northwest Argentina

An emerging virus isolated from papaya (Carica papaya) 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...

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Main Authors: Cabrera Mederos, Dariel, Debat, Humberto Julio, Torres, Carolina, Portal, Orelvis, Jaramillo Zapata, Margarita, Trucco, Veronica Milagros, Flores, Ceferino Rene, Ortiz, Claudio Manuel, Badaracco, Alejandra, Acuña, Luis Eduardo, Nome Docampo, Claudia, Quito-Avila, Diego, Bejerman, Nicolas Esteban, Castellanos Collazo, Onias, Sánchez-Rodríguez, Aminael, Giolitti, Fabian
Format: info:ar-repo/semantics/artículo
Language:Inglés
Published: MDPI 2022
Subjects:
Potexviruses
Papaya Mosaic Virus
Papayas
Argentina
Carica Papaya
Potexvirus
Next-Generation Sequencing
Emerging Virus
Papaya Virus X
Online Access:http://hdl.handle.net/20.500.12123/13187
https://www.mdpi.com/1999-4915/14/10/2297
https://doi.org/10.3390/v14102297
Summary:An emerging virus isolated from papaya (Carica papaya) 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 Potexvirus. Blast analysis of RNA-dependent RNA polymerase (RdRp) and coat protein (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.

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