Revision of taxonomic criteria for species demarcation in the family Geminiviridae, and an updated list of begomovirus species.

摘要: Members of the family Geminiviridae characteristically have circular single-stranded DNAgenomes packaged within twinned (so-called geminate) particles. Geminiviruses are currentlydivided into four genera on basis their genome organizations and biological properties[2,20].Thosethathaveamonopartitegenomeandaretransmittedbyleafhoppervectors,primarilyto monocotyledonous plants, included in genus Mastrevirus, which Maize streak virus isthe type species. Viruses that monopartite genomes distinct from those mastrevirusesand transmitted by leafhopper vectors to dicotyledonous plants thegenus Curtovirus, with Beet curly top as The Topocuvirus, recentlyrecognized International Committee Taxonomy (ICTV) [18], has only onemember (also species), Tomato pseudo-curly virus, a genomeandistransmittedbyatreehoppervectortodicotyledonousplants.ThegenusBegomoviruscontainsviruses whitefly Bemisia tabaci (Gennadius) plants,with Bean golden yellow mosaic (originally – Puerto Rico)asthetype Many begomoviruses bipartite (DNA A DNA B components),although numerous occur Old World, thereare some for single component is not infectious yet no been found.Geminiviruses cause significant yield losses many crop throughout world [5, 7].Because economic importance relative ease genomescan be cloned, geminiviruses isolated characterized. Guidelines naming