A novel fusarivirus isolated from the phytopathogenic fungus Nigrospora oryzae

被引：20

作者：

Zhong, Jie ^{[1
]}

Zhao, Si Qi ^{[1
]}

Li, Gui Fang ^{[1
]}

Pang, Xi Dan ^{[1
]}

Deng, Xiao Jun ^{[1
]}

Zhu, Hong Jian ^{[1
,2
]}

Gao, Bi Da ^{[1
]}

Zhou, Qian ^{[1
]}

机构：

[1] Hunan Agr Univ, Hunan Prov Key Lab Biol & Control Plant Dis & Ins, Nongda Rd 1, Changsha 410128, Hunan, Peoples R China

[2] Hunan Agr Univ, Southern Reg Collaborat Innovat Ctr Grain & Oil C, Nongda Rd 1, Changsha 410128, Hunan, Peoples R China

来源：

VIRUS GENES | 2016年 / 52卷 / 06期

关键词：

Mycovirus; Fusariviridae; Nigrospora oryzae; Phylogenetic analysis; DOUBLE-STRANDED-RNA; 1ST REPORT; LEAF-SPOT; PLANT; MYCOVIRUSES; HYPOVIRULENCE; VIRUS;

D O I：

10.1007/s11262-016-1371-5

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

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.

引用

页码：891 / 895

页数：5

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