Genetic characterization of astroviruses detected in guinea fowl ( Numida meleagris ) reveals a distinct genotype and suggests cross-species transmission between turkey and guinea fowl

Genetic characterization of astroviruses detected in guinea fowl ( Numida meleagris ) reveals a... Astroviruses can infect mammalian and avian species and are often responsible for gastroenteric disease symptoms. In this study, the complete open reading frame (ORF) 2, the 3′ end of ORF1b and the corresponding intergenic region of astroviruses identified in farmed guinea fowl ( Numida meleagris ) were sequenced and genetically analysed. Overall, the genetic sequence of guinea fowl astroviruses was related to turkey astrovirus type 2 (TastV2), although a marked genetic distance was revealed based on ORF2, which might indicate the circulation of a distinct virus genotype and serotype in guinea fowl. Furthermore, the genetic data presented herein suggest that either recombination between different astroviruses infecting distinct hosts or adaptation of a given astrovirus to a new host had occurred. In either case, direct or indirect interspecies transmission of astroviruses is likely to have occurred between turkey and guinea fowl, indicating the ability of viruses belonging to the family Astroviridae to cross species barriers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Genetic characterization of astroviruses detected in guinea fowl ( Numida meleagris ) reveals a distinct genotype and suggests cross-species transmission between turkey and guinea fowl

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Publisher
Springer Journals
Copyright
Copyright © 2012 by Springer-Verlag
Subject
Biomedicine; Infectious Diseases; Medical Microbiology; Virology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-012-1311-1
Publisher site
See Article on Publisher Site

Abstract

Astroviruses can infect mammalian and avian species and are often responsible for gastroenteric disease symptoms. In this study, the complete open reading frame (ORF) 2, the 3′ end of ORF1b and the corresponding intergenic region of astroviruses identified in farmed guinea fowl ( Numida meleagris ) were sequenced and genetically analysed. Overall, the genetic sequence of guinea fowl astroviruses was related to turkey astrovirus type 2 (TastV2), although a marked genetic distance was revealed based on ORF2, which might indicate the circulation of a distinct virus genotype and serotype in guinea fowl. Furthermore, the genetic data presented herein suggest that either recombination between different astroviruses infecting distinct hosts or adaptation of a given astrovirus to a new host had occurred. In either case, direct or indirect interspecies transmission of astroviruses is likely to have occurred between turkey and guinea fowl, indicating the ability of viruses belonging to the family Astroviridae to cross species barriers.

Journal

Archives of VirologySpringer Journals

Published: Jul 1, 2012

References

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