Distribution and genetic diversity of Southern rice black-streaked dwarf virus in China
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  • 作者:Zhaobang Cheng (1)
    Shuo Li (1)
    Ruizhen Gao (1)
    Feng Sun (1)
    Wancai Liu (2)
    Guohui Zhou (3)
    Jianxiang Wu (4)
    Xueping Zhou (4)
    Yijun Zhou (1)
  • 关键词:Southern rice black ; streaked dwarf virus ; Viral distribution in China ; Genetic diversity of SRBSDV
  • 刊名:Virology Journal
  • 出版年:2013
  • 出版时间:December 2013
  • 年:2013
  • 卷:10
  • 期:1
  • 全文大小:315 KB
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  • 作者单位:Zhaobang Cheng (1)
    Shuo Li (1)
    Ruizhen Gao (1)
    Feng Sun (1)
    Wancai Liu (2)
    Guohui Zhou (3)
    Jianxiang Wu (4)
    Xueping Zhou (4)
    Yijun Zhou (1)

    1. Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Technical Service Center of Diagnosis and Detection for Plant Virus Diseases, Nanjing, 210014, P. R. China
    2. National Agro-Tech Extension and Service Center, Beijing, 100125, P. R. China
    3. College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, P. R. China
    4. State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, P. R. China
  • ISSN:1743-422X
文摘
Background Rice and maize dwarf diseases caused by the newly introduced Southern rice black-streaked dwarf virus (SRBSDV) have led to severe economic losses in South China in recent years. The distribution and diversity of SRBSDV have not been investigated in the main rice and maize growing areas in China. In this study, the distribution of SRBSDV in China was determined by using reverse transcription-polymerase chain reaction (RT-PCR). Results Between 2009 and 2010, 2404 plant samples (2294 rice, 110 maize samples, and more than 300 cultivars) with dwarf symptoms were collected from fields in 194 counties of 17 provinces in China and SRBSDV was detected. The results indicated that 1545 (64.27%) of samples (both rice and maize) were infected with SRBSDV. SRBSDV was detected widely in Hainan, Guangdong, Guangxi, Yunnan, Guizhou, Chongqing, Fujian, Jiangxi, Hunan, Hubei, Anhui, Jiangsu, and Zhejiang provinces, which suggests SRBSDV is an important pathogen causing rice dwarfing diseases in South China. Phylogenetic analysis of 15 representative virus isolates revealed that SRBSDV isolates in China had high levels of nucleotide and amino acid sequence identities (>97.8%). Conclusions SRBSDV spreads naturally in Yangtze River basin and south region, the location of the major rice production areas. In comparison, the virus rarely spreads north of Yangtze River in North China. Distribution of SRBSDV is consistent with the migrating and existing ranges of its vector WBPH, suggesting that SRBSDV might be introduced into South China along with the migration of viruliferous WBPH.

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