Molecular Characterization of Southern Rice Blacked‐Streaked Dwarf Virus (SRBSDV) from Vietnam

Southern rice black‐streaked dwarf virus (SRBSDV) is a novel putative member of the genus Fijivirus, family Reoviridae. We report here the genomic sequences of a Vietnamese isolate (SRBSDV‐V). The total genome of SRBSDV‐V has 29 115 nucleotides (nt), nine nt shorter than SRBSDV‐GD or ‐HN, but simila...

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Published inJournal of phytopathology Vol. 162; no. 6; pp. 349 - 358
Main Authors Xue, Jin, Li, Jing, Zhang, Heng‐Mu, Yang, Jian, Lv, Ming‐Fang, Gao, Bi‐Da, Chen, Jian‐Ping
Format Journal Article
LanguageEnglish
Published Berlin Blackwell Science 01.06.2014
Blackwell Publishing Ltd
Wiley Subscription Services, Inc
Subjects
evolution
Fijivirus
genetic recombination
genome
homology
nucleotide diversity
nucleotides
Oryza sativa
recombination
Reoviridae
rice
Southern rice black-streaked dwarf virus (SRBSDV)
viruses
Vietnam
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Summary:Southern rice black‐streaked dwarf virus (SRBSDV) is a novel putative member of the genus Fijivirus, family Reoviridae. We report here the genomic sequences of a Vietnamese isolate (SRBSDV‐V). The total genome of SRBSDV‐V has 29 115 nucleotides (nt), nine nt shorter than SRBSDV‐GD or ‐HN, but similar in organization to these two Chinese isolates. Nucleotide diversities among SRBSDV isolates were much lower than those among the corresponding ORFs of the available RBSDV isolates and there was a lower purifying selection pressure on SRBSDV than RBSDV, providing first molecular evidence for the view that SRBSDV is of recent origin. In studies of all available SRBSDV sequences, there was no obvious correlation between geographic distances and phylogenetic distribution. A high frequency of genetic recombination was found among both Chinese and Vietnam SRBSDV isolates, suggesting that recombination may play an important role in the molecular variation and evolution of SRBSDV.
Bibliography:http://dx.doi.org/10.1111/jph.12196
National Science and Technology Support Program - No. 2012BAD19B03
Zhejiang Provincial Foundation for Natural Science - No. Z305165; No. Y3090657
istex:969B1C5DB09A0287E8EB894EEEC7F38A46226A63
ark:/67375/WNG-0HT2GRHQ-J
ArticleID:JPH12196
China 973 Program - No. 2010CB126203
Agro-scientific Research in the Public Interest of China - No. 201003031
Figure S1. Multiple alignment of C-end of group 2 fijivirus P10.Table S1. Primers designed for cloning the complete genome segments of SRBSDV-V. Table S2. All recombination events detected by RDP Program.
863 Program - No. 2007AA10Z414
Zhejiang Provincial Science and Technology Project - No. 2010C12027
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ISSN:0931-1785
1439-0434
DOI:10.1111/jph.12196