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A novel fusarivirus isolated from the phytopathogenic fungus Nigrospora oryzae

Virus Genes volume 52, pages 891–895 (2016)Cite this article

Abstract

In this study, we report the discovery and molecular characterization of a novel mycovirus, Nigrospora oryzae fusarivirus 1 (NoFV1) isolated from the rice-infecting fungus Nigrospora oryzae. Excluding a poly (A) tail, the genome of the virus is 7004 nucleotide (nt) long containing three putative nonoverlapping open reading frames (ORF1, ORF2, and ORF3). The large ORF1 encodes a polypeptide with a conserved RNA-dependent RNA polymerase (RdRp) domain and a helicase domain that functions for RNA replication. Each of the smaller ORF2 and the smallest ORF3 encodes a putative protein with an unknown function. Amino acid (aa) sequence similarities between the NoFV1-ORF1- and ORF2-encoded proteins and the homologous sequences from other mycoviruses were found. Phylogenetic analysis on the basis of the RdRp and helicase domains showed that NoFV1 is phylogenetically related to viruses in the newly proposed family Fusariviridae. Thus, we suggest that NoFV1 might be a novel member of family Fusariviridae.

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Acknowledgments

This study is supported by Hunan Provincial Innovation Foundation for Postgraduates (Serial Number CX2014B291) and Excellent Doctoral Dissertation Cultivating Fund of Hunan Agricultural University (YB2015002).

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    Affiliations

    1. Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Nongda Road 1, Furong District, Changsha, Hunan, 410128, People’s Republic of China

      Jie Zhong, Si Qi Zhao, Gui Fang Li, Xi Dan Pang, Xiao Jun Deng, Hong Jian Zhu, Bi Da Gao & Qian Zhou

    2. Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Nongda Road 1, Furong District, Changsha, Hunan, 410128, People’s Republic of China

      Hong Jian Zhu

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    1. Jie Zhong
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    2. Si Qi Zhao
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    3. Gui Fang Li
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    4. Xi Dan Pang
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    5. Xiao Jun Deng
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    6. Hong Jian Zhu
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    7. Bi Da Gao
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    8. Qian Zhou
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    Correspondence to Bi Da Gao or Qian Zhou.

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    This paper is in compliance with ethical standards for research. The authors declare no conflicts of interest.

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    J. Zhong and S. Q. Zhao have contributed equally to this work.

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    Zhong, J., Zhao, S.Q., Li, G.F. et al. A novel fusarivirus isolated from the phytopathogenic fungus Nigrospora oryzae . Virus Genes 52, 891–895 (2016). https://doi.org/10.1007/s11262-016-1371-5

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    • DOI: https://doi.org/10.1007/s11262-016-1371-5

    Keywords

    • Mycovirus
    • Fusariviridae
    • Nigrospora oryzae
    • Phylogenetic analysis