Molecular analysis of the VP7 gene of pheasant rotaviruses identifies a new genotype, designated G23

Ursu, Krisztina; Kisfali, Péter; Dorothée, Rigo; Ivánics, Éva; Erdélyi, Károly; Dán, Ádám; Melegh, Béla; Martella, Vito; Bányai, Krisztiàn

doi:10.1007/s00705-009-0439-0

Cited by 96 publications

(107 citation statements)

References 13 publications

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“…Recently, a number of new genotypes have been found in humans and animals (Collins et al, 2010; Lamhoujeb et al, 2010;Martella et al, 2006Martella et al, , 2007Matthijnssens et al, 2009Matthijnssens et al, , 2010aMcNeal et al, 2005;Parra et al, 2007;Rahman et al, 2005; Schumann et al, 2009; Solberg et al, 2009;Ursu et al, 2009). However, the genetic background of most strains has remained to be identified.…”

Section: Discussionmentioning

confidence: 99%

“…They elicit neutralizing antibodies independently. In a dual classification system, rotaviruses are classified into 24 G genotypes and 32 P genotypes based on the nucleotide sequences of VP7 and VP4 genes, respectively (Collins et al, 2010;Esona et al, 2010;Matthijnssens et al, 2006Matthijnssens et al, , 2008aSchumann et al, 2009;Solberg et al, 2009;Ursu et al, 2009). Recently, a new classification system has been established using nucleotide sequences of all of the 11 genomic RNA segments by the Rotavirus Classification Working Group (RCWG) (Matthijnssens et al, 2008b).…”

Section: Introductionmentioning

confidence: 99%

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Whole genome characterization of new bovine rotavirus G21P[29] and G24P[33] strains provides evidence for interspecies transmission

Abe

Ito

Masatani

et al. 2011

Journal of General Virology

134

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We have reported a novel bovine rotavirus, the AzuK-1 (G21P [29]) strain, isolated from an asymptomatic calf. We isolated another bovine rotavirus, the Dai-10 strain, bearing new G24P [33] genotypes, assigned by the Rotavirus Classification Working Group (RCWG), from an asymptomatic cow in Hyogo Prefecture, Japan in 2007. To gain an insight into the origins and evolution of these strains, we determined the complete ORF sequences of all 11 genes of the two strains. The NSP3 genes of both strains were confirmed to belong to a new NSP3 genotype, T9, by the RCWG. Genotype determination of AzuK-1 and Dai-10 strains revealed that eight gene segments of both strains possessed genotypes typically observed in bovine rotaviruses, with the exception of VP4, VP7 and NSP3 gene segments. Unexpectedly, phylogenetic analyses showed that VP6 and NSP2 gene segments of the AzuK-1 and Dai-10 strains were clustered with those of simian or canine/feline rotaviruses, rather than with those of bovine rotaviruses. These findings indicate the possibility that both strains originated by interspecies transmission and multiple reassortment events involving bovine, simian and canine/feline rotaviruses, resulting in the introduction of some genes into the genetic background of bovine rotaviruses. INTRODUCTIONGroup A rotaviruses are the major pathogens causing acute gastroenteritis in infants and a wide range of animals, including birds. Rotavirus-induced diarrhoea is a serious public health problem worldwide, responsible for more than 600 000 child deaths each year (Parashar et al., 2006). Likewise, in domestic animals, rotavirus-induced diarrhoea is a major problem causing significant economic losses (Dhama et al., 2009;Martella et al., 2010).Rotaviruses are members of the family Reoviridae. Rotaviruses possess a genome of 11 segments of dsRNA, which encode six viral structural proteins (VP1-VP4, VP6 and VP7) and six non-structural proteins (NSP1-NSP6). Because of the segmented nature of the genome, a reassortment event can occur in cells co-infected with two or more different strains (Estes & Kapikian, 2007;Palombo, 2002;Ramig, 1997). The rotavirus virion is a triple-layered icosahedral particle. The outer capsid is composed of VP7 and VP4. They elicit neutralizing antibodies independently. In a dual classification system, rotaviruses are classified into 24 G genotypes and 32 P genotypes based on the nucleotide sequences of VP7 and VP4 genes, respectively (Collins et al., 2010; Esona et al., 2010;Matthijnssens et al., 2006Matthijnssens et al., , 2008a Schumann et al., 2009; Solberg et al., 2009;Ursu et al., 2009). Recently, a new classification system has been established using nucleotide sequences of all of the 11 genomic RNA segments by the Rotavirus Classification Working Group (RCWG) (Matthijnssens et al., 2008b). In this system, the The GenBank/EMBL/DDBJ accession numbers for the sequences reported in this paper are AB513836-AB513838 and AB573070-AB573086.Supplementary material is available with the online version of this paper. , 2...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Whole genome characterization of new bovine rotavirus G21P[29] and G24P[33] strains provides evidence for interspecies transmission

Abe

Ito

Masatani

et al. 2011

Journal of General Virology

134

View full text Add to dashboard Cite

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“…The system differentiates G-types (VP7-specific, G for glycoprotein) and P-types (VP4-specific, P for protease-sensitive protein). To date, 23 different G-types and 31 P-types have been described [5][6][7][8][9], indicating extensive genomic diversity within group A rotaviruses.…”

Section: Introductionmentioning

confidence: 99%

Rotavirus genotypes co-circulating in Europe between 2006 and 2009 as determined by EuroRotaNet, a pan-European collaborative strain surveillance network

Iturriza‐Gómara¹,

Dallman²,

Bányai³

et al. 2010

Epidemiol. Infect.

205

254

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SUMMARYEuroRotaNet, a laboratory network, was established in order to determine the diversity of co-circulating rotavirus strains in Europe over three or more rotavirus seasons from 2006/2007 and currently includes 16 countries. This report highlights the tremendous diversity of rotavirus strains co-circulating in the European population during three years of surveillance since 2006/ 2007 and points to the possible origins of these strains including genetic reassortment and interspecies transmission. Furthermore, the ability of the network to identify strains circulating with an incidence of o1% allowed the identification of possible emerging strains such as G8 and G12 since the beginning of the study ; analysis of recent data indicates their increased incidence.

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“…The nature of two outer capsid proteins of the virus, VP4 and VP7, elicits the production of neutralizing antibodies to the virus [Hoshino et al, 1985;Offit et al, 1986] and allows to define the P (for P sensitive) and G (for glycoprotein) serotypes of the virus. Currently, 23 G genotypes and 32 P genotypes have been described, based on nucleotide sequence variation [Matthijnssens et al, 2008a[Matthijnssens et al, ,b, 2009Ursu et al, 2009;Collins et al, 2010]. Global epidemiologic surveys have identi- and G9P[8] as the most common global G/P genotype combinations associated with diarrhea in humans Estes and Kapikian, 2007].…”

Section: Introductionmentioning

confidence: 99%

Genotype diversity of group A rotavirus strains in children with acute diarrhea in urban Burkina Faso, 2008–2010

Bonkoungou¹,

Damanka²,

Sanou³

et al. 2011

Journal of Medical Virology

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In this study, the diversity of G and P genotypes of rotavirus strains in Burkinabe children were examined. Between November 2008 and February 2010, 447 stool samples were collected from children <5 years of age with acute diarrhea visiting hospital in Ouagadougou. Group A rotavirus was previously detected in 151/447 (33.8%) of the samples tested by an immunochromatographic test and these samples were now tested further for rotavirus G and P genotypes by RT‐PCR. Of these, the rotavirus type genes were amplified by RT‐PCR for 140/151 (92.7%) samples and G and P genotypes were successfully determined for 81 (57.9%) and 130 (92.9%) samples, respectively. The most prevalent G genotypes were G1, 34/140 (24.3%), and G9, 21/140 (15%), while the predominant P genotypes were P[6], 56/140 (40%), and P[8], 54/140 (38.6%). Among the single infections, 63/140 (45%), the predominant G/P combinations were: G1P[8] (33%), G9P[8] (29%), and G2P[6] (14%). The unusual strains G1P[9] (3%), G12P[6] (3%), G10P[6] (2%), and G2P[8] (2%) were also detected. In a high number of strains 61/140 (43.6%), the G genotype could not be determined and mixed infections were determined in 17/140 (12.1%) of strains identified. This study highlights the high diversity and presence of unusual rotavirus strains in children in Burkina Faso. J. Med. Virol. 83:1485–1490, 2011. © 2011 Wiley‐Liss, Inc.

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Molecular analysis of the VP7 gene of pheasant rotaviruses identifies a new genotype, designated G23

Cited by 96 publications

References 13 publications

Whole genome characterization of new bovine rotavirus G21P[29] and G24P[33] strains provides evidence for interspecies transmission

Whole genome characterization of new bovine rotavirus G21P[29] and G24P[33] strains provides evidence for interspecies transmission

Rotavirus genotypes co-circulating in Europe between 2006 and 2009 as determined by EuroRotaNet, a pan-European collaborative strain surveillance network

Genotype diversity of group A rotavirus strains in children with acute diarrhea in urban Burkina Faso, 2008–2010

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