《中国畜牧兽医》 ›› 2018, Vol. 45 ›› Issue (6): 1661-1667.doi: 10.16431/j.cnki.1671-7236.2018.06.030

• 预防兽医 • 上一篇    下一篇

鹦鹉幼雏病病毒福建株VP1基因的克隆及序列分析

万春和, 程龙飞, 傅光华, 施少华, 陈红梅, 傅秋玲, 刘荣昌, 林建生, 黄瑜   

  1. 福建省农业科学院畜牧兽医研究所, 福建省畜禽疫病防治工程技术研究中心, 福建省禽病防治重点实验室, 福州 350013
  • 收稿日期:2017-12-06 出版日期:2018-06-20 发布日期:2018-06-15
  • 通讯作者: 黄瑜 E-mail:huangyu_815@163.com
  • 作者简介:万春和(1982-),男,湖北鄂州人,博士,副研究员,研究方向:水禽病原分子生物学,E-mail:chunhewan@126.com
  • 基金资助:

    福建省农业科学院科技创新团队(STIT2017-3-10、STIT2017-1-5);国家水禽产业体系(CARS-42);国家自然科学基金(31602068);福建省属公益类项目(2018R1023-5);福建省农业科学院青年科技英才项目(YC2015-12)

Cloning and Sequence Analysis of VP1 Gene of Budgerigar Fledgling Disease Polyomavirus from Fujian

WAN Chunhe, CHENG Longfei, FU Guanghua, SHI Shaohua, CHEN Hongmei, FU Qiuling, LIU Rongchang, LIN Jiansheng, HUANG Yu   

  1. Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention, Fujian Animal
    Diseases Control Technology Development Center, Institute of Animal Husbandry and
    Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
  • Received:2017-12-06 Online:2018-06-20 Published:2018-06-15

摘要:

为明确虎皮鹦鹉源鹦鹉幼雏病病毒(budgerigar fledgling disease polyomavirus,BFPyV)福建株(命名为FJ-2016株)结构蛋白VP1基因特征,本研究针对BFPyV VP1基因特点设计特异性引物,利用PCR方法扩增获得FJ-2016株VP1基因全长序列,目的片段经胶回收后进行克隆测序。结果显示,BFPyV FJ-2016株VP1基因全长为1 032 bp,编码343个氨基酸。所编码VP1蛋白的理论等电点为5.77,不稳定指数为40.91,是不稳定蛋白;脂肪系数为74.72;总平均疏水性指数为-0.366。将获得的VP1基因序列提交至GenBank,登录号为:MG148345。核苷酸同源性分析表明,不同时间、地区和品种BFPyV的VP1基因十分保守,相互之间的核苷酸同源性均在99.1%以上。遗传进化分析发现,不同时间和地域BFPyV相互之间亲缘关系较近,但可细分为两个大的遗传进化分支(Clade 1和Clade 2)。从宿主品种来看,虎皮鹦鹉源BFPyV各分离株的遗传进化与分离时间及地域无明显关系,虎皮鹦鹉源BFPyV分离株在Clade 1和Clade 2分支均有分布。本研究首次证实福建地区虎皮鹦鹉中存在BFPyV感染,相关研究结果为丰富不同地区BFPyV分子流行病学数据提供参考。

关键词: 鹦鹉幼雏病病毒; 虎皮鹦鹉; VP1基因; 序列分析

Abstract:

In order to characterize the VP1 gene of budgerigar fledgling disease polyomavirus (BFPyV) from Melopsittacus undulates (designated as FJ-2016 strain),specific primers were designed according to the VP1 gene of BFPyV retrieved from GenBank.The full-length sequence of VP1 gene of FJ-2016 strain was amplified by PCR.The target fragment was recovered,cloned and sequenced.The results demonstrated that the length of VP1 gene was 1 032 bp,coding 343 amino acids.The VP1 protein theoretical pI,instability index,aliphatic index and grand average of hydropathicity was 5.77,40.91(means unstable protein),74.72 and -0.366,respectively.The sequences were submitted to the GenBank,the accession No. was MG148345.Nucleotides homology of the VP1 gene of BFPyV isolates were above 99.1% with each other.The VP1 gene nucleotides comparison indicated that the VP1 gene was very conserved among different time,regions and species.Phylogenetic tree based on the VP1 gene showed that BFPyV isolates with different time and regions shared closer relationship with each other,which also could be divided into two genetic clades (Clade 1 and Clade 2).The Melopsittacus undulates origin BFPyV could be found in the two genetic clades,these data indicated that Melopsittacus undulates origin BFPyV shared no significant phylogenetic evolution relationship with the time and regions.In conclusion,this study provided evidence of budgerigar fledgling disease polyomavirus circulating in Fujian,which enriched the BFPyV molecular epidemiology data in China.

Key words: budgerigar fledgling disease polyomavirus; Melopsittacus undulatus; VP1 gene; sequence analysis

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