Complete genome sequence of sacbrood virus isolated from Asiatic honey bee Apis cerana indica in India

被引：5
作者：
Aruna R. [1 ]
Srinivasan M.R. [1 ]
Balasubramanian V. [2 ]
Selvarajan R. [2 ]
机构：
[1] Department of Agricultural Entomology, Tamil Nadu Agricultural University (TNAU), Coimbatore, 641 003, Tamil Nadu
[2] Molecular Virology Lab, Division of Crop Protection, ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchirappalli, 620102, Tamil Nadu
来源：
VirusDisease | 2018年 / 29卷 / 4期
关键词：
Apis cerana indica; Complete genome; Honey bee; Reverse transcriptase polymerase-chain reaction; Sacbrood virus (SBV);
D O I：
10.1007/s13337-018-0490-0
中图分类号：
学科分类号：
摘要：
We determined the complete genome sequence of a sacbrood virus (SBV) infecting Indian honey bee (Apis cerana indica) from Tamil Nadu, India named as AcSBV-IndTN1. The genome of AcSBV-IndTN1 comprised of 8740 nucleotides, encoding a single large ORF containing 2849 amino acids flanked by 5′ and 3′ untranslated regions. Results of phylogenetic tree analysis based on complete genomes of SBV isolates indicated that the virus isolates from India isolated from the Asiatic honey bee A. cerana (AcSBVs) formed a separate group along with six Vietnam isolates and three Chinese isolates. The AcSBV-IndTN1 isolate showed closer genetic relationship with other isolates from India. The second major group had both AcSBVs and AmSBVs (virus isolated from European honey bee, Apis mellifera SBV) of Korea, China and Vietnam. The third and a distantly related group had AmSBVs of Australia, UK, USA and Korea. The results obtained from phylogenetic analysis were further supported with evolutionary distance analysis. AcSBV-IndTN1 isolate open reading frame had 95–99% amino acid sequence similarity with other Indian isolates and 92–96% with AcSBVs and AmSBVs of other geographical locations. In addition, sequence difference count matrix ranged from 154 to 907 nt among all the SBV isolates. This suggests that the virus isolates have evolved significantly in different geographical locations but isolates on different hosts in a given location/country are closely related. The high similarity in the genome among the AcSBV and AmSBV isolates indicate possible cross-infections and recombination of SBV isolates in Asian continent where both the honey bee species are reared in close proximity. Gene flow between SBV population indicating that an infrequent gene flow occur between them. The pattern of molecular diversity in SBV population revealed that the occurrence of recent population expansion of SBV. To the best of our knowledge this is the first report of the complete nucleotide sequence of AcSBV from Tamil Nadu, India. This study provided an opportunity to establish the molecular evolution of SBV isolates and shall be useful in the development of diagnostics and effective disease control strategies. © 2018, Indian Virological Society.
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页码：453 / 460
页数：7
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