title: Begomovirus-Associated Satellite DNA Diversity Captured Through Vector-Enabled Metagenomic (VEM) Surveys Using Whiteflies (Aleyrodidae).
abstract: Monopartite begomoviruses (Geminiviridae), which are whitefly-transmitted single-stranded DNA viruses known for causing devastating crop diseases, are often associated with satellite DNAs. Since begomovirus acquisition or exchange of satellite DNAs may lead to adaptation to new plant hosts and emergence of new disease complexes, it is important to investigate the diversity and distribution of these molecules. This study reports begomovirus-associated satellite DNAs identified during a vector-enabled metagenomic (VEM) survey of begomoviruses using whiteflies collected in various locations (California (USA), Guatemala, Israel, Puerto Rico, and Spain). Protein-encoding satellite DNAs, including alphasatellites and betasatellites, were identified in Israel, Puerto Rico, and Guatemala. Novel alphasatellites were detected in samples from Guatemala and Puerto Rico, resulting in the description of a phylogenetic clade (DNA-3-type alphasatellites) dominated by New World sequences. In addition, a diversity of small (~640-750 nucleotides) satellite DNAs similar to satellites associated with begomoviruses infecting Ipomoea spp. were detected in Puerto Rico and Spain. A third class of satellite molecules, named gammasatellites, is proposed to encompass the increasing number of reported small (<1 kilobase), non-coding begomovirus-associated satellite DNAs. This VEM-based survey indicates that, although recently recovered begomovirus genomes are variations of known genetic themes, satellite DNAs hold unexplored genetic diversity.
authors: College of Marine Science, University of South Florida, Saint Petersburg, FL 33701, USA. krosari2@mail.usf.edu.
authors: Karyna
authors: K
authors: Rosario
authors: College of Marine Science, University of South Florida, Saint Petersburg, FL 33701, USA. ckmarr@mail.usf.edu.
authors: Christian
authors: C
authors: Marr
authors: School of Biological Sciences and Biomolecular Interaction Centre, University of Canterbury, Ilam, Christchurch 8041, New Zealand. arvind.varsani@canterbury.ac.nz.|Department of Plant Pathology, University of Florida, Gainesville, FL 32611, USA. arvind.varsani@canterbury.ac.nz.|Structural Biology Research Unit, Department of Clinical Laboratory Sciences, University of Cape Town, Rondebosch, Cape Town 7701, South Africa. arvind.varsani@canterbury.ac.nz.
authors: Arvind
authors: A
authors: Varsani
authors: School of Biological Sciences and Biomolecular Interaction Centre, University of Canterbury, Ilam, Christchurch 8041, New Zealand. simona.kraberger@pg.canterbury.ac.nz.
authors: Simona
authors: S
authors: Kraberger
authors: School of Biological Sciences and Biomolecular Interaction Centre, University of Canterbury, Ilam, Christchurch 8041, New Zealand. daisy.stainton@pg.canterbury.ac.nz.
authors: Daisy
authors: D
authors: Stainton
authors: Instituto de Hortofruticultura Subtropical y Mediterránea ''La Mayora'' (IHSM-UMA-CSIC), Consejo Superior de Investigaciones Científicas, Estación Experimental ''La Mayora'', Algarrobo-Costa, Málaga 29750, Spain. moriones@eelm.csic.es.
authors: Enrique
authors: E
authors: Moriones
authors: Department of Plant Pathology, University of Florida, Gainesville, FL 32611, USA. jep@ufl.edu.
authors: Jane E
authors: JE
authors: Polston
authors: College of Marine Science, University of South Florida, Saint Petersburg, FL 33701, USA. mya@usf.edu.
authors: Mya
authors: M
authors: Breitbart
mesh_terms: D000818:Animals; D053839:Begomovirus / Q000235:genetics* / Q000378:metabolism; D004276:DNA, Satellite / Q000235:genetics* / Q000378:metabolism; D004279:DNA, Viral / Q000235:genetics* / Q000378:metabolism; D014644:Genetic Variation; D006430:Hemiptera / Q000145:classification / Q000821:virology*; D007303:Insect Vectors / Q000821:virology*; D056186:Metagenomics; D008969:Molecular Sequence Data; D010802:Phylogeny; D010935:Plant Diseases / Q000821:virology; D012526:Satellite Viruses / Q000235:genetics* / Q000378:metabolism
chemical_list: D004276:DNA, Satellite; D004279:DNA, Viral
keywords: Ipomoea satellites; alphasatellites; begomovirus; begomovirus-associated satellites; betasatellites; gammasatellites; metagenomics; ssDNA; vector; whitefly