Journal Article

Alphasatellitidae: a new family with two subfamilies for the classification of geminivirus- and nanovirus-associated alphasatellites

Roumagnac, Philippe, Peuplements végétaux et bioagresseurs en milieu tropical (UMR PVBMT) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université de La Réunion (UR), Moriones, Enrique, Biologie et Génétique des Interactions Plante-Parasite (UMR BGPI) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Universidade Federal de Viçosa = Federal University of Viçosa (UFV), Universidad de Málaga [Málaga] = University of Málaga [Málaga], Briddon, Rob W, University of Cape Town, Varsani, Arvind, National Institute for Biotechnology and Genetic Engineering (NIBGE), Lett, Jean-Michel, The Biodesign

2018

Overview

Nanoviruses and geminiviruses are circular, single stranded DNA viruses that infect many plant species around the world. Nanoviruses and certain geminiviruses that belong to the Begomovirus and Mastrevirus genera are associated with additional circular, single stranded DNA molecules (similar to 1-1.4 kb) that encode a replication-associated protein (Rep). These Rep-encoding satellite molecules are commonly referred to as alphasatellites and here we communicate the establishment of the family Alphasatellitidae to which these have been assigned. Within the Alphasatellitidae family two subfamilies, Geminialphasatellitinae and Nanoalphasatellitinae, have been established to respectively accommodate the geminivirus- and nanovirus-associated alphasatellites. Whereas the pairwise nucleotide sequence identity distribution of all the known geminialphasatellites (n = 628) displayed a troughs at similar to 70% and 88% pairwise identity, that of the known nanoalphasatellites (n = 54) had a troughs at similar to 67% and similar to 80% pairwise identity. We use these pairwise identity values as thresholds together with phylogenetic analyses to establish four genera and 43 species of geminialphasatellites and seven genera and 19 species of nanoalphasatellites. Furthermore, a divergent alphasatellite associated with coconut foliar decay disease is assigned to a species but not a subfamily as it likely represents a new alphasatellite subfamily that could be established once other closely related molecules are discovered.

• Publisher: Springer Verlag,HAL CCSD,Springer Vienna,Springer Nature B.V
• Subject: Animals / Begomovirus / Biomedical and Life Sciences / Biomedicine / coconuts / Cocos - virology / Deoxyribonucleic acid / Divergence / DNA / DNA viruses / Geminiviridae - classification / Geminiviridae - genetics / Geminiviridae - isolation & purification / Genera / Genome, Viral / Hemiptera - virology / Infectious Diseases / Life Sciences / Mastrevirus / Medical Microbiology / Musa - virology / Nanoviridae / Nanovirus - classification / Nanovirus - genetics / Nanovirus - isolation & purification / new family / Nucleotide sequence / nucleotide sequences / Odonata - virology / Phylogeny / Plant Diseases - virology / Plant viruses / Satellite Viruses - classification / Satellite Viruses - genetics / Satellite Viruses - isolation & purification / sequence analysis / single-stranded DNA / Species / Vegetal Biology / Virology / Virology Division News
• ISBN: 0004434320000