The genomic and biological characterization of Citrullus lanatus cryptic virus infecting watermelon in China
文献类型： 外文期刊
作者：
Xin, Min
1
;
Cao, Mengji
2
;
Liu, Wenwen
1
;
Ren, Yingdang
3
;
Lu, Chuantao
3
;
Wang, Xifeng
1
;
作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
2.Southwest Univ, Natl Citrus Engn Res Ctr, Citrus Res Inst, Chongqing 400715, Peoples R China
3.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou 450002, Peoples R China
关键词： Watermelon (Citrullus lanatus);Next generation sequencing (NGS);Citrullus lanatus cryptic virus (CiLCV);Full genome;Seed-borne
期刊名称：VIRUS RESEARCH （ 影响因子：3.303； 五年影响因子：3.445 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： A dsRNA virus was detected in the watermelon (Citrullus lanatus) samples collected from Kaifeng, Henan province, China through the use of next generation sequencing of small RNAs. The complete genome of this virus is comprised of dsRNA-1 (1603 nt) and dsRNA-2 (1466 nt), both of which are single open reading frames and potentially encode a 54.2 kDa RNA-dependent RNA polymerase (RdRp) and a 45.9 kDa coat protein (CP), respectively. The RdRp and CP share the highest amino acid identities 85.3% and 75.4% with a previously reported Israeli strain Citrullus lanatus cryptic virus (CiLCV), respectively. Genome comparisons indicate that this virus is the same species with CiLCV, whereas the reported sequences of the Israeli strain of CiLCV are partial, and our newly identified sequences can represent the complete genome of CiLCV. Futhermore, phylogenetic tree analyses based on the RdRp sequences suggest that CiLCV is one member in the genus Deltapartitivirus, family Partitiviridae. In addition, field investigation and seed-borne bioassays show that CiLCV commonly occurs in many varieties and is transmitted though seeds at a very high rate. (C) 2017 Elsevier B.V. All rights reserved.
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