《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (10): 3042-3048.doi: 10.16431/j.cnki.1671-7236.2017.10.030

• 预防兽医 • 上一篇    下一篇

鸭腺病毒A型Hexon基因克隆与序列分析

万春和, 刘荣昌, 陈翠腾, 程龙飞, 傅光华, 傅秋玲, 施少华, 陈红梅, 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:2017-04-17 出版日期:2017-10-20 发布日期:2017-10-20
  • 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:水禽病毒分子生物学,E-mail:chunhewan@126.com
  • 基金资助:

    国家水禽产业技术体系(CARS-43);国家自然科学基金(31602068);福建省农业科学院畜牧兽医研究所基金[MYQJ2015(S)-3];福建省自然科学基金(2015J01114);福建省农业科学院"青年科技英才百人计划"专项(YC2015-12)

Cloning and Sequence Analysis of Hexon Gene of Duck Adenovirus A

WAN Chun-he, LIU Rong-chang, CHEN Cui-teng, CHENG Long-fei, FU Guang-hua, FU Qiu-ling, SHI Shao-hua, CHEN Hong-mei, 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:2017-04-17 Online:2017-10-20 Published:2017-10-20

摘要:

为明确鸭腺病毒A型Hexon基因特征及其在腺病毒科病毒分类中的作用,本研究从前期分离鉴定的一株番鸭源鸭腺病毒A型分离株(JX2016株)中分段扩增获得其Hexon基因编码区。结果发现,鸭腺病毒A型JX2016株Hexon基因编码区为2 733 bp,编码910个氨基酸,与鸭腺病毒A型(FJ12025株)核苷酸同源性最高,达99.8%;与其他分离株Hexon基因核苷酸同源性均在99.4%以上;与鸭腺病毒2型(GR株,未明确分类地位)同源性仅为54.5%;与禽腺病毒A型Phelps株(鸡源)及P29株(鹅源)的核苷酸同源性分别为53.6%和55.2%。遗传进化树分析发现,所有鸭腺病毒A型分离株在遗传进化上均处于相同的亚分支,且与绵羊腺病毒D型(OAV287株)均处于富AT腺病毒属遗传进化分支。但鸭腺病毒2型(GR株)与禽腺病毒A型Phelps株(鸡源)、P29株(鹅源)却处于同一遗传进化分支,均属于禽腺病毒属遗传进化分支。基于Hexon蛋白的遗传进化分析,建议将鸭腺病毒A型重新命名为鸭源富AT腺病毒A型,将鸭腺病毒2型重新命名为鸭源禽腺病毒。

关键词: 鸭腺病毒A型; Hexon基因; 序列分析; 遗传进化; 分类

Abstract:

In order to clarify the characteristics of the Hexon gene and the classification candidate of duck adenovirus A under the Adenoviridae family, the Hexon gene fragments of duck adenovirus A (designated as strain JX2016) were amplified. The results demonstrated that the cloned Hexon gene of duck adenovirus A (strain JX2016) was 2 733 bp in length, coding 910 amino acids. Nucleotide homology comparison showed that the strain JX2016 shared the highest nucleotide (99.8%) homology with reference strain FJ12025, also displayed higher than 99.4% nucleotide homology with other duck adenovirus A reference strains. However, the nucleotide homologies with strain GR (duck adenovirus 2, unclassified virus), Phelps (fowl adenovirus A) and P29 (goose adenovirus) were 54.5%, 53.6% and 55.2%, respectively. The genetic evolution analysis showed that all the duck adenovirus A strains were at the same subgroup, under the same Atadenovirus genus branch with ovine atadenovirus D (strain OAV287). Meanwhile, the duck adenovirus 2 (strain GR) at the same branch under Aviadenovirus genus branch with fowl adenovirus A (strain Phelps) and goose adenovirus (strain P29). Based on the Hexon protein genetic evolution analysis, we suggested renamed the duck adenovirus A as duck-origin atadenovirus and renamed the duck adenovirus 2 as duck-origin aviadenovirus.

Key words: duck adenovirus A; Hexon gene; sequence analysis; genetic evolution; classification

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