title: The nucleotide sequence and genome organization of two victoriviruses from the rice false smut fungus Ustilaginoidea virens.
abstract: Ustilaginoidea virens is the causal agent of false smut disease of rice. The dsRNA-Ls from a U. virens strain of Uv0901 containing three dsRNA bands were separated and sequenced. The dsRNA-Ls, with molecular weight of 5 kbp, were demonstrated to be two dsRNA segments referenced as dsRNA-L1 and dsRNA-L2. The two dsRNAs each contained two overlapped open reading frames, and showed significant similarity to those of capsid protein and RNA-directed RNA polymerase, respectively, of members of the family Totiviridae. Homology research and phylogenic analysis indicated that the dsRNA-L1 was a conspecific species of the previous reported Ustilaginoidea virens RNA virus 1, named Ustilaginoidea virens RNA virus Uv0901, and the dsRNA-L2 was a new number of the Victorivirus in the family Totiviridae, designed as Ustilaginoidea virens RNA virus 3.
authors.affiliation: Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Nongda Road 1, Furong District, Changsha, 410128, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhong
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhou
authors.forename: Xiang Hua
authors.initials: XH
authors.lastname: Lei
authors.forename: Dan
authors.initials: D
authors.lastname: Chen
authors.forename: Hong Hong
authors.initials: HH
authors.lastname: Shang
authors.forename: Hong Jian
authors.initials: HJ
authors.lastname: Zhu
mesh_terms: D001483:Base Sequence; D016679:Genome, Viral; D006999:Hypocreales / Q000502:physiology / Q000821:virology*; D008969:Molecular Sequence Data; D012275:Oryza / Q000382:microbiology*; D010802:Phylogeny; D010935:Plant Diseases / Q000382:microbiology*; D019196:Totiviridae / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification*