title: Molecular characterization of segments S7 to S10 of a southern rice black-streaked dwarf virus isolate from maize in northern China.
abstract: Southern rice black-streaked dwarf virus (SRBSDV) is a novel Fijivirus prevalent in rice in southern and central China, and northern Vietnam. Its genome has 10 segments of double-stranded RNA named S1 to S10 according to their size. An isolate of SRBSDV, JNi4, was obtained from naturally infected maize plants from Ji'ning, Shandong province, in the 2008 maize season. Segments S7 to S10 of JNi4 share nucleotide identities of 72.6%-73.1%, 72.3%-73%, 73.9%-74.5% and 77.3%-79%, respectively, with corresponding segments of Rice black-streaked dwarf virus isolates, and identities of 99.7%, 99.1%-99.7%, 98.9%-99.5%, and 98.6%-99.2% with those of SRBSDV isolates HN and GD. JNi4 forms a separate branch with GD and HN in the phylogenetic trees constructed with genomic sequences of S7 to S10. These results confirm the proposed taxonomic status of SRBSDV as a distinct species of the genus Fijivirus and indicate that JNi4 is an isolate of SRBSDV. Shandong is so far the northernmost region where SRBSDV is found in China.
authors.affiliation: Shandong Key Laboratory for Agricultural Microbiology, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Yin
authors.forename: Fei-fei
authors.initials: FF
authors.lastname: Xu
authors.forename: Fang-qiang
authors.initials: FQ
authors.lastname: Zheng
authors.forename: Xiang-dong
authors.initials: XD
authors.lastname: Li
authors.forename: Bao-shen
authors.initials: BS
authors.lastname: Liu
authors.forename: Chun-qing
authors.initials: CQ
authors.lastname: Zhang
mesh_terms: D002681:China; D010802:Phylogeny; D010942:Plant Viruses / Q000145:classification / Q000235:genetics*; D016133:Polymerase Chain Reaction; D014764:Viral Proteins / Q000235:genetics*; D003313:Zea mays / Q000821:virology*
chemical_list: D014764:Viral Proteins