A new genotype of bovine leukemia virus in South America identified by NGS-based whole genome sequencing and molecular evolutionary genetic analysis

Background: Bovine leukemia virus (BLV) is a member of retroviridae family, together with human T cell leukemia virus types 1 and 2 (HTLV-1 and -2) belonging to the genes deltaretrovirus, and infects cattle worldwide. Previous studies have classified the env sequences of BLV provirus from different...

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Autores principales: Polat, Meripet, Takeshima, Shin‑nosuke, Hosomichi, Kazuyoshi, Kim, Jiyun Kim, Miyasaka, Taku, Yamada, Kazunori, Arainga, Mariluz, Murakami, Tomoyuki, Matsumoto, Yuki, Barra Diaz, Veronica de la, Panei, Carlos Javier, González, Ester Teresa, Kanemaki, Misao, Onuma, Misao, Giovambattista, Guillermo, Aida, Yoko
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86046
Aporte de:
id I19-R120-10915-86046
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Veterinarias
BLV whole genome analysis
Bovine leukemia virus (BLV)
Gp51 env sequencing
Next generation sequencing
Phylogenetic analysis
South America
spellingShingle Ciencias Veterinarias
BLV whole genome analysis
Bovine leukemia virus (BLV)
Gp51 env sequencing
Next generation sequencing
Phylogenetic analysis
South America
Polat, Meripet
Takeshima, Shin‑nosuke
Hosomichi, Kazuyoshi
Kim, Jiyun Kim
Miyasaka, Taku
Yamada, Kazunori
Arainga, Mariluz
Murakami, Tomoyuki
Matsumoto, Yuki
Barra Diaz, Veronica de la
Panei, Carlos Javier
González, Ester Teresa
Kanemaki, Misao
Onuma, Misao
Giovambattista, Guillermo
Aida, Yoko
A new genotype of bovine leukemia virus in South America identified by NGS-based whole genome sequencing and molecular evolutionary genetic analysis
topic_facet Ciencias Veterinarias
BLV whole genome analysis
Bovine leukemia virus (BLV)
Gp51 env sequencing
Next generation sequencing
Phylogenetic analysis
South America
description Background: Bovine leukemia virus (BLV) is a member of retroviridae family, together with human T cell leukemia virus types 1 and 2 (HTLV-1 and -2) belonging to the genes deltaretrovirus, and infects cattle worldwide. Previous studies have classified the env sequences of BLV provirus from different geographic locations into eight genetic groups. To investigate the genetic variability of BLV in South America, we performed phylogenetic analyses of whole genome and partial env gp51 sequences of BLV strains isolated from Peru, Paraguay and Bolivia, for which no the molecular characteristics of BLV have previously been published, and discovered a novel BLV genotype, genotype-9, in Bolivia. Results: In Peru and Paraguay, 42.3 % (139/328) and over 50 % (76/139) of samples, respectively, were BLV positive. In Bolivia, the BLV infection rate was up to 30 % (156/507) at the individual level. In Argentina, 325/420 samples were BLV positive, with a BLV prevalence of 77.4 % at the individual level and up to 90.9 % at herd level. By contrast, relatively few BLV positive samples were detected in Chile, with a maximum of 29.1 % BLV infection at the individual level. We performed phylogenetic analyses using two different approaches, maximum likelihood (ML) tree and Bayesian inference, using 35 distinct partial env gp51 sequences from BLV strains isolated from Peru, Paraguay, and Bolivia, and 74 known BLV strains, representing eight different BLV genotypes from various geographical locations worldwide. The results indicated that Peruvian and Paraguayan BLV strains were grouped into genotypes-1, -2, and -6, while those from Bolivia were clustered into genotypes-1, -2, and -6, and a new genotype, genotype-9. Interestingly, these results were confirmed using ML phylogenetic analysis of whole genome sequences obtained by next generation sequencing of 25 BLV strains, assigned to four different genotypes (genotypes-1, -2, -6, and -9) from Peru, Paraguay, and Bolivia. Comparative analyses of complete genome sequences clearly showed some specific substitutions, in both structural and non-structural BLV genes, distinguishing the novel genotype-9 from known genotypes. Conclusions: Our results demonstrate widespread BLV infection in South American cattle and the existence of a new BLV genotype-9 in Bolivia. We conclude that at least seven BLV genotypes (genotypes-1, -2, -4, -5, -6, -7, and -9) are circulating in South America.
format Articulo
Articulo
author Polat, Meripet
Takeshima, Shin‑nosuke
Hosomichi, Kazuyoshi
Kim, Jiyun Kim
Miyasaka, Taku
Yamada, Kazunori
Arainga, Mariluz
Murakami, Tomoyuki
Matsumoto, Yuki
Barra Diaz, Veronica de la
Panei, Carlos Javier
González, Ester Teresa
Kanemaki, Misao
Onuma, Misao
Giovambattista, Guillermo
Aida, Yoko
author_facet Polat, Meripet
Takeshima, Shin‑nosuke
Hosomichi, Kazuyoshi
Kim, Jiyun Kim
Miyasaka, Taku
Yamada, Kazunori
Arainga, Mariluz
Murakami, Tomoyuki
Matsumoto, Yuki
Barra Diaz, Veronica de la
Panei, Carlos Javier
González, Ester Teresa
Kanemaki, Misao
Onuma, Misao
Giovambattista, Guillermo
Aida, Yoko
author_sort Polat, Meripet
title A new genotype of bovine leukemia virus in South America identified by NGS-based whole genome sequencing and molecular evolutionary genetic analysis
title_short A new genotype of bovine leukemia virus in South America identified by NGS-based whole genome sequencing and molecular evolutionary genetic analysis
title_full A new genotype of bovine leukemia virus in South America identified by NGS-based whole genome sequencing and molecular evolutionary genetic analysis
title_fullStr A new genotype of bovine leukemia virus in South America identified by NGS-based whole genome sequencing and molecular evolutionary genetic analysis
title_full_unstemmed A new genotype of bovine leukemia virus in South America identified by NGS-based whole genome sequencing and molecular evolutionary genetic analysis
title_sort new genotype of bovine leukemia virus in south america identified by ngs-based whole genome sequencing and molecular evolutionary genetic analysis
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86046
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