Genomes of Potato Mop-Top Virus (Virgaviridae : Pomovirus) Isolates from New Zealand and Their Impact on Diagnostic Methods

Following the detection of potato mop-top virus (PMTV) in New Zealand in 2018, three near-complete PMTV genomes (AS22, AS99, AS144) were assembled from soil samples taken from potato fields in Canterbury. Phylogenetic analysis revealed that these genomes form a distinct lineage, with limited genetic...

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Veröffentlicht in:Plant disease. - 1997. - 106(2022), 10 vom: 12. Okt., Seite 2571-2575
1. Verfasser: Frampton, Rebekah A (VerfasserIn)
Weitere Verfasser: Addison, Shea M, Kalamorz, Falk, Smith, Grant R
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article PMTV SNP diagnostics potato qPCR virus Soil
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520 |a Following the detection of potato mop-top virus (PMTV) in New Zealand in 2018, three near-complete PMTV genomes (AS22, AS99, AS144) were assembled from soil samples taken from potato fields in Canterbury. Phylogenetic analysis revealed that these genomes form a distinct lineage, with limited genetic diversity, within the PMTV species. This analysis supports the hypothesis that these genomes share a common origin, possibly resulting from a single (or limited) incursion of PMTV into New Zealand. A single nucleotide polymorphism was identified in the region where a key diagnostic primer binds. The mismatch of the diagnostic primer has implications for the effectiveness of the Mumford diagnostic protocol currently recommended for use in New Zealand; we recommend that the alternative Pandey assay, for which no primer mismatch was detected, be validated and optimized for use on the viral genomes present in New Zealand 
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