title: Complete genome sequence and organization of a novel virus from the rice false smut fungus Ustilaginoidea virens.
abstract: In this study, three dsRNA segments from the rice false smut fungus Ustilaginoidea virens, the causal agent of a serious disease in rice, with molecular size ranging from 1.3 to 5 Kb, were isolated and named as dsRNA-L, dsRNA-M, and dsRNA-S. The complete nucleotide sequences of dsRNA-M and dsRNA-S were determined and analyzed. The dsRNA-M putatively encodes an RNA-dependent RNA polymerase, which is similar to that of the partitiviruses in the family Partitiviridae. Although the protein encoded by dsRNA-S showed less similarity to the typical coat protein of the virus in the family Partitiviridae, the structural analysis results indicated that the dsRNA-S might function as the capsid protein. We propose that the virus is Ustilaginoidea virens partitivirus 2-Uv0901, a new member, but distantly related to the newly proposed genus Gammapartitivirus with a distinct sequence pattern of capsid protein.
authors: 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: Jie
authors: J
authors: Zhong
authors: Jun-Zi
authors: JZ
authors: Zhu
authors: Xiang-Hua
authors: XH
authors: Lei
authors: Dan
authors: D
authors: Chen
authors: Hong-Jian
authors: HJ
authors: Zhu
authors: Bi-Da
authors: BD
authors: Gao
mesh_terms: D000595:Amino Acid Sequence; D016681:Genome, Fungal; D008969:Molecular Sequence Data; D012275:Oryza / Q000382:microbiology*; D017386:Sequence Homology, Amino Acid; D014587:Ustilaginales / Q000235:genetics* / Q000821:virology