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Research article2007Peer reviewed

Family Flexiviridae: a case study in virion and genome plasticity

Martelli GP, Adams MJ, Kreuze JF, Dolja VV


The plant virus family Flexiviridae includes the definitive genera Potexvirus, Mandarivirus, Allexivinus, Carlavirus, Foveavirlis, Capillovirus, Vitivirus, Trichovirus, the putative genus Citrivirus, and some unassigned species. Its establishment was based on similarities in virion morphology, common features in genome type and organization, and strong phylogenetic relationships between replicational and structural proteins. In this review, we provide a brief account of the main biological and molecular properties of the members of the family, with special emphasis on the relationships within and among the genera. In phylogenetic analyses the potexvirus-like replicases were more closely related to tymoviruses than to carlaviruses. We postulate a common evolutionary ancestor for the family Tymoviridae and the two distinct evolutionary clusters of the Flexiviridae, i.e., a plant virus witha polyadenylated genome, filamentous virions, and a triple gene block of movement proteins. Subsequent recombination and gene loss would

Published in

Annual Review of Phytopathology
2007, Volume: 45, pages: 73-100 ISBN: 978-0-8243-1345-6

    UKÄ Subject classification

    Agricultural Science
    Landscape Architecture
    Environmental Sciences related to Agriculture and Land-use

    Publication identifier


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