Distribution and genetic variability of alfalfa dwarf virus, a cytorhabdovirus associated with alfalfa dwarf disease in Argentina

In 2010, a novel cytorhabdovirus named alfalfa dwarf virus (ADV) was detected for the first time in lucerne crops in Argentina showing dwarfism, in mixed infections with several other viruses. ADV appears to be endemic to Argentina and has not been reported elsewhere. In this study, we have investig...

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Autores principales: Samarfard, Samira, Bejerman, Nicolas Esteban, Dietzgen, Ralf Georg
Formato: Artículo
Lenguaje:Inglés
Publicado: Springer 2018
Materias:
Acceso en línea:http://hdl.handle.net/20.500.12123/3630
https://link.springer.com/article/10.1007%2Fs11262-018-1563-2#citeas
https://doi.org/10.1007/s11262-018-1563-2
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author Samarfard, Samira
Bejerman, Nicolas Esteban
Dietzgen, Ralf Georg
author_browse Bejerman, Nicolas Esteban
Dietzgen, Ralf Georg
Samarfard, Samira
author_facet Samarfard, Samira
Bejerman, Nicolas Esteban
Dietzgen, Ralf Georg
author_sort Samarfard, Samira
collection INTA Digital
description In 2010, a novel cytorhabdovirus named alfalfa dwarf virus (ADV) was detected for the first time in lucerne crops in Argentina showing dwarfism, in mixed infections with several other viruses. ADV appears to be endemic to Argentina and has not been reported elsewhere. In this study, we have investigated the genetic variability of ADV based on the complete nucleoprotein (N) gene of 13 isolates from different lucerne-growing regions in Argentina. Phylogenetic and sequence identity analyses showed that all ADV isolates are closely related and have not diverged more than 1% in the N gene despite geographical separation. These data provide further evidence that ADV is new to science and emerged and spread very recently. A total of 43 single-nucleotide polymorphisms were identified between the ADV isolates studied. Analysis of N gene ORF sequence revealed a mutational bias, with more transitions than transversions. In all cases, the ratio of non-synonymous/synonymous nucleotide changes was < 1, indicating that ADV N gene is under predominantly purifying selection.
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spelling INTA36302018-10-18T14:31:03Z Distribution and genetic variability of alfalfa dwarf virus, a cytorhabdovirus associated with alfalfa dwarf disease in Argentina Samarfard, Samira Bejerman, Nicolas Esteban Dietzgen, Ralf Georg Medicago Sativa Virus de las Plantas Plant Viruses Genetic Variation Variación Genética Cytorhabdovirus Polymorphism Polimorfismo Nucleoproteins Nucleoproteínas Alfalfa Alfalfa Dwarf Virus Phylogenetic Analysis Análisis Filogenético Single-nucleotide Polymorphism Nucleoprotein Gene Virus del Enanismo de la Alfalfa In 2010, a novel cytorhabdovirus named alfalfa dwarf virus (ADV) was detected for the first time in lucerne crops in Argentina showing dwarfism, in mixed infections with several other viruses. ADV appears to be endemic to Argentina and has not been reported elsewhere. In this study, we have investigated the genetic variability of ADV based on the complete nucleoprotein (N) gene of 13 isolates from different lucerne-growing regions in Argentina. Phylogenetic and sequence identity analyses showed that all ADV isolates are closely related and have not diverged more than 1% in the N gene despite geographical separation. These data provide further evidence that ADV is new to science and emerged and spread very recently. A total of 43 single-nucleotide polymorphisms were identified between the ADV isolates studied. Analysis of N gene ORF sequence revealed a mutational bias, with more transitions than transversions. In all cases, the ratio of non-synonymous/synonymous nucleotide changes was < 1, indicating that ADV N gene is under predominantly purifying selection. Instituto de Patología Vegetal Fil: Samarfard, Samira. University of Queensland. Queensland Alliance for Agriculture and Food Innovation; Australia Fil: Bejerman, Nicolas Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Dietzgen, Ralf Georg. University of Queensland. Queensland Alliance for Agriculture and Food Innovation; Australia 2018-10-18T14:27:29Z 2018-10-18T14:27:29Z 2018-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/3630 https://link.springer.com/article/10.1007%2Fs11262-018-1563-2#citeas 0920-8569 1572-994X (Online) https://doi.org/10.1007/s11262-018-1563-2 eng info:eu-repo/semantics/restrictedAccess application/pdf Argentina (nation) Springer Virus genes 54 (4) : 612–615. (August 2018)
spellingShingle Medicago Sativa
Virus de las Plantas
Plant Viruses
Genetic Variation
Variación Genética
Cytorhabdovirus
Polymorphism
Polimorfismo
Nucleoproteins
Nucleoproteínas
Alfalfa
Alfalfa Dwarf Virus
Phylogenetic Analysis
Análisis Filogenético
Single-nucleotide Polymorphism
Nucleoprotein Gene
Virus del Enanismo de la Alfalfa
Samarfard, Samira
Bejerman, Nicolas Esteban
Dietzgen, Ralf Georg
Distribution and genetic variability of alfalfa dwarf virus, a cytorhabdovirus associated with alfalfa dwarf disease in Argentina
title Distribution and genetic variability of alfalfa dwarf virus, a cytorhabdovirus associated with alfalfa dwarf disease in Argentina
title_full Distribution and genetic variability of alfalfa dwarf virus, a cytorhabdovirus associated with alfalfa dwarf disease in Argentina
title_fullStr Distribution and genetic variability of alfalfa dwarf virus, a cytorhabdovirus associated with alfalfa dwarf disease in Argentina
title_full_unstemmed Distribution and genetic variability of alfalfa dwarf virus, a cytorhabdovirus associated with alfalfa dwarf disease in Argentina
title_short Distribution and genetic variability of alfalfa dwarf virus, a cytorhabdovirus associated with alfalfa dwarf disease in Argentina
title_sort distribution and genetic variability of alfalfa dwarf virus a cytorhabdovirus associated with alfalfa dwarf disease in argentina
topic Medicago Sativa
Virus de las Plantas
Plant Viruses
Genetic Variation
Variación Genética
Cytorhabdovirus
Polymorphism
Polimorfismo
Nucleoproteins
Nucleoproteínas
Alfalfa
Alfalfa Dwarf Virus
Phylogenetic Analysis
Análisis Filogenético
Single-nucleotide Polymorphism
Nucleoprotein Gene
Virus del Enanismo de la Alfalfa
url http://hdl.handle.net/20.500.12123/3630
https://link.springer.com/article/10.1007%2Fs11262-018-1563-2#citeas
https://doi.org/10.1007/s11262-018-1563-2
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