Genetic Characteristics of Duck Tembusu Virus Isolated in Jiangxi
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摘要: 为了解江西省鸭坦布苏病毒(Duck Tembusu virus,DTMUV)的遗传变异情况,对2013年江西省某蛋鸭场分离获得的1株鸭坦布苏病毒(命名为YF株)进行基因组分子特征及遗传进化分析。序列分析表明,该株病毒基因组全长10 990 nt,未出现核苷酸插入或缺失及基因重组的变异情况,与已报道的DTMUV分离株的核苷酸同源性均在98.5%以上,且亲缘关系与当前鸭群中优势病毒亚群非常近。以上结果表明,近年来江西鸭群中流行的鸭坦布苏病毒遗传比较稳定,未发生变异。Abstract: Genetic characteristics and variation of the epidemic strain of duck Tembusu virus (DTMUV) found in Jiangxi Province were investigated. A DTMUV strain, designated as YF, was isolated from a clinical case in 2013. A sequence analysis showed the viral genome of YF to be 10, 990 nt in length with no Ins/Del or genetic recombination. It shared no less than 98.5% homology with the viral strains isolated from ducks since 2010. Phylogenetically, YF had a close relationship with currently circulating dominant virus lineage. It appeared that the DTMUV in local ducks had been genetically stable throughout these years.
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Key words:
- duck tembusu virus /
- YF strain /
- complete genome /
- sequence analysis
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表 1 病毒全基因组扩增引物序列
Table 1. Primers used for genome amplification
引物名称 引物序列(5′-3′) 上游 下游 ATVP1/R1 AGAAGTTCATCTGTGTGA TAGAATTGCCCCATGTCAAC ATVP2/R 2 GTCCCGTCTACACCGCTGA TCACTGTGCACAGCTCTATT ATVP3/R 3 GTTGTCCACAAAGGTAT TGGTTGTCATCCAGTAACCT ATVP4/R 4 GTGTTTGGGCCTTTCGAACT CTGAGTAGTGGTATTCATCT ATVP5/R5 GATGGAGAAGGAAGCGTGCAA CCTCAATTAGTGTCACCGAA ATVP6/R 6 CACCAAATACGCTAACCTTGA TGTTGTAAATGCAGGTCTCA ATVP7/R 7 GACAGAGAAAGAGAACTGCA TCCATGGATTGACCACGTTG ATVP8/R 8 GAGGAAGTCAGGCCAGGGAA AGATCCTGTGTTCTACCA 注:R=A/G; Y=C/T。 表 2 坦布苏病毒信息及序列同源性比对结果
Table 2. Information and results of sequence analysis on DTMUV
毒株 GenBank ID 宿主 YF株/% 核苷酸同源性 氨基酸同源性 XHZD/2010 JQ595407 鸭 99.2 99.0 Shandong1 JX965381 鸭 99.3 99.4 FJMH220 JQ928189 鸭 99.3 98.6 ZJ-407 JQ314464 鸭 99.3 99.0 YY5 JF270480 鸭 99.2 99.1 JS JQ920422 鸭 99.4 99.2 JS804 JF895923 鹅 99.3 98.7 goose JQ920424 鹅 99.4 99.6 ZJ GH-2 JQ314465 鹅 99.1 99.0 GS-PT-7 JQ627864 鹅 99.4 99.8 Sitiawan JX477686 肉鸡 87.2 96.2 JXSP JQ920423 鸭 99.5 99.7 Du/CH·L-1SD/110128 KC136210 鸭 98.5 99.0 ZJ-6 JF459991 鸭 99.4 99.5 byd1 JQ920420 鸭 99.4 99.2 TA JQ289550 鸭 99.3 99.4 WR JX196334 鸭 99.4 99.6 JX2 JQ920426 鸭 98.5 99.2 duan JQ920421 鸭 99.2 99.1 JS/2010 JX273153 鸭 99.4 99.1 WJ-1 JX549382 鸭 98.5 99.0 MM 1775 JX477685 蚊虫 88.6 96.4 -
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