title: VIRION MORPHOLOGY AND STRUCTURAL ORGANIZATION OF POLYVALENT BACTERIOPHAGES TT10-27 AND KEY.
abstract: Fine ultrastructure of polyvalent bacteriophages TT10-27 and KEY isolated from affected with fire blight disease plant tissues, was studied using electron microscopy. Phages have isometric heads connected to short complex tail (TT10-27, C1-morphotype) or long non-contractile tail (KEY B-1 morphotype). Maximum diameter of TT10-27 head, measured as the distance between opposite vertices, is 71.3 nm; tail tube of 22 nm in diameter and 9.0 nm in width is framed with 12 appendages that form flabellate structure of 47.0-58.6 nm in diameter. KEY features capsid of 78.6 nm in diameter and flexible non-contractile tail of 172.5 nm long, which ends with a conical tip. Due to a number of features phage TT10-27 was assigned to a group of N4-like phages of Podoviridae family. KEY is a representative of family Siphoviridae, the least freaquent group of Erwinia amylovora phages.
authors.forename: I V
authors.initials: IV
authors.lastname: Faidiuk
authors.forename: A A
authors.initials: AA
authors.lastname: Boyko
authors.forename: F V
authors.initials: FV
authors.lastname: Muchnyk
authors.forename: F I
authors.initials: FI
authors.lastname: Tovkach
mesh_terms: D002213:Capsid / Q000648:ultrastructure*; D044084:Erwinia amylovora / Q000821:virology; D008854:Microscopy, Electron; D010935:Plant Diseases / Q000821:virology; D017902:Podoviridae / Q000648:ultrastructure*; D031989:Pyrus / Q000821:virology; D027824:Rosaceae / Q000821:virology; D017906:Siphoviridae / Q000648:ultrastructure*; D014771:Virion / Q000648:ultrastructure*