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    Revisiting the classification of curtoviruses based on genome-wide pairwise identity

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    Type
    Article
    Authors
    Varsani, Arvind
    Martin, Darren Patrick
    Navas-Castillo, Jesús
    Moriones, Enrique
    Hernández-Zepeda, Cecilia
    Idris, Ali
    Murilo Zerbini, F.
    Brown, Judith K.
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Desert Agriculture Initiative
    Date
    2014-01-25
    Online Publication Date
    2014-01-25
    Print Publication Date
    2014-07
    Permanent link to this record
    http://hdl.handle.net/10754/563352
    
    Metadata
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    Abstract
    Members of the genus Curtovirus (family Geminiviridae) are important pathogens of many wild and cultivated plant species. Until recently, relatively few full curtovirus genomes have been characterised. However, with the 19 full genome sequences now available in public databases, we revisit the proposed curtovirus species and strain classification criteria. Using pairwise identities coupled with phylogenetic evidence, revised species and strain demarcation guidelines have been instituted. Specifically, we have established 77% genome-wide pairwise identity as a species demarcation threshold and 94% genome-wide pairwise identity as a strain demarcation threshold. Hence, whereas curtovirus sequences with >77% genome-wide pairwise identity would be classified as belonging to the same species, those sharing >94% identity would be classified as belonging to the same strain. We provide step-by-step guidelines to facilitate the classification of newly discovered curtovirus full genome sequences and a set of defined criteria for naming new species and strains. The revision yields three curtovirus species: Beet curly top virus (BCTV), Spinach severe surly top virus (SpSCTV) and Horseradish curly top virus (HrCTV). © 2014 Springer-Verlag Wien.
    Citation
    Varsani, A., Martin, D. P., Navas-Castillo, J., Moriones, E., Hernández-Zepeda, C., Idris, A., … Brown, J. K. (2014). Revisiting the classification of curtoviruses based on genome-wide pairwise identity. Archives of Virology, 159(7), 1873–1882. doi:10.1007/s00705-014-1982-x
    Sponsors
    JNC and EM are members of the Research Group AGR-214, partially funded by Consejeria de Economia, Innovacion y Ciencia, Junta de Andalucia, Spain, cofinanced by FEDER-FSE. AV and DPM are supported by the National Research Foundation, South Africa.
    Publisher
    Springer Nature
    Journal
    Archives of Virology
    DOI
    10.1007/s00705-014-1982-x
    PubMed ID
    24463952
    ae974a485f413a2113503eed53cd6c53
    10.1007/s00705-014-1982-x
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Desert Agriculture Initiative

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