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001-es BibID:BIBFORM118503
035-os BibID:(WoS)000770971900001 (Scopus)85126803924
Első szerző:Fehér Enikő (molekuláris biológus, mikrobiológus)
Cím:A novel gyrovirus in a common pheasant (Phasianus colchicus) with poult enteritis and mortality syndrome /Enikő Fehér, Krisztina Bali, Eszter Kaszab, Katalin Ihász, Szilvia Jakab, Borbála Nagy, Krisztina Ursu, Szilvia L. Farkas, Krisztián Bányai
Dátum:2022
ISSN:0304-8608
Megjegyzések:A novel gyrovirus was detected in an intestinal specimen of a common pheasant that died due to poult enteritis and mortality syndrome. The genome of the pheasant-associated gyrovirus (PAGyV) is 2353 nucleotides (nt) long and contains putative genes for the VP1, VP2, and VP3 proteins in an arrangement that is typical for gyroviruses. Gyrovirus-specific motifs were identified in both the coding region and the intergenic region of the PAGyV genome. The VP1 of PAGyV shares up to 67.6% pairwise nt sequence identity with reference sequences and forms a distinct branch in the phylogenetic tree. Thus, according to the recently described species demarcation criteria, PAGyV belongs to a novel species in the genus Gyrovirus, family Anelloviridae, for which we propose the name "Gyrovirus phaco 1".
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Archives Of Virology. - 167 : 5 (2022), p. 1349-1353. -
További szerzők:Bali Krisztina Kaszab Eszter (1989-) (biológus) Ihász Katalin Jakab Szilvia Nagy Borbála Ursu Krisztina Farkas Szilvia L. Bányai Krisztián
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2.

001-es BibID:BIBFORM118498
035-os BibID:(Cikkazonosító)1592 (WoS)000690239600001 (Scopus)85113142544
Első szerző:Fehér Enikő (molekuláris biológus, mikrobiológus)
Cím:Genomic Epidemiology and Evolution of Duck Hepatitis A Virus / Enikő Fehér, Szilvia Jakab, Krisztina Bali, Eszter Kaszab, Borbála Nagy, Katalin Ihász, Ádám Bálint, Vilmos Palya, Krisztián Bányai
Dátum:2021
ISSN:1999-4915
Megjegyzések:Duck hepatitis A virus (DHAV), an avian picornavirus, causes high-mortality acute disease in ducklings. Among the three serotypes, DHAV-1 is globally distributed, whereas DHAV-2 and DHAV-3 serotypes are chiefly restricted to Southeast Asia. In this study, we analyzed the genomic evolution of DHAV-1 strains using extant GenBank records and genomic sequences of 10 DHAV-1 strains originating from a large disease outbreak in 2004?2005, in Hungary. Recombination analysis revealed intragenotype recombination within DHAV-1 as well as intergenotype recombination events involving DHAV-1 and DHAV-3 strains. The intergenotype recombination occurred in the VP0 region. Diversifying selection seems to act at sites of certain genomic regions. Calculations estimated slightly lower rates of evolution of DHAV-1 (mean rates for individual protein coding regions, 5.6286 ? 10?4 to 1.1147 ? 10?3 substitutions per site per year) compared to other picornaviruses. The observed evolutionary mechanisms indicate that whole-genome-based analysis of DHAV strains is needed to better understand the emergence of novel strains and their geographical dispersal.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Viruses-Basel. - 13 : 8 (2021), p. 1-10. -
További szerzők:Jakab Szilvia Bali Krisztina Kaszab Eszter (1989-) (biológus) Nagy Borbála Ihász Katalin Bálint Ádám Palya Vilmos Bányai Krisztián
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3.

001-es BibID:BIBFORM118511
035-os BibID:(WoS)001028622300001 (Scopus)85165039685 (cikkazonosító)2137
Első szerző:Gál Bence
Cím:Marked Genotype Diversity among Reoviruses Isolated from Chicken in Selected East-Central European Countries / Bence Gál, Renáta Varga-Kugler, Katalin Ihász, Eszter Kaszab, Marianna Domán, Szilvia Farkas, Krisztián Bányai
Dátum:2023
ISSN:2076-2615
Megjegyzések:The concern that the vaccines currently used against Avian orthoreovirus (ARV) infections are less efficient in the field justifies the need for the close monitoring of circulating ARV strains. In this study, we collected necropsy samples from various chicken breeds and tested for ARV by virus isolation, RT-PCR assay and sequence analysis. ARVs were isolated from birds showing runting-stunting syndrome, uneven growth, lameness or increased mortality, with relative detection rates of 38%, 35%, 6% and 25%, respectively. Partial ?C gene sequences were determined for nearly 90% of ARV isolates. The isolates could be classified into one of the major genetic clusters. Interestingly, cluster 2 and cluster 5 were isolated from vaccinated broiler breeders, while clusters 1 to 4 were isolated from unvaccinated broilers. The isolates shared less than 75% amino acid identities with the vaccine strains (range, 44.3?74.6%). This study reaffirms the global distribution of the major genetic clusters of ARVs in chicken. The diversity of ARV strains isolated from unvaccinated broilers was greater than those detected from vaccinated animals, however, the relative importance of passive and active immunity on the selection of novel strains in different chicken breeds needs to be better understood.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Animals. - 13 : 13 (2023), p. 1-13. -
További szerzők:Varga-Kugler Renáta Ihász Katalin Kaszab Eszter (1989-) (biológus) Domán Marianna (1987-) (biológus) Farkas Szilvia Bányai Krisztián
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4.

001-es BibID:BIBFORM117251
035-os BibID:(Scopus)85178361033 (cikkazonosító)3504 (WoS)001122834800001
Első szerző:Gál Bence
Cím:A Snapshot on the Genomic Epidemiology of Turkey Reovirus Infections, Hungary / Bence Gál, Renáta Varga-Kugler, Katalin Ihász, Eszter Kaszab, Szilvia Farkas, Szilvia Marton, Vito Martella, Krisztián Bányai
Dátum:2023
ISSN:2076-2615
Megjegyzések:Reovirus infections in turkeys are associated with arthritis and lameness. Viral genome sequence data are scarce, which makes an accurate description of the viral evolution and epidemiology difficult. In this study, we isolated and characterized turkey reoviruses from Hungary. The isolates were identified in 2016; these isolates were compared with earlier Hungarian turkey reovirus strains and turkey reoviruses isolated in the 2010s in the United States. Gene-wise sequence and phylogenetic analyses identified the cell-receptor binding protein and the main neutralization antigen, ?C, to be the most conserved. The most genetically diverse gene was another surface antigen coding gene, ?B. This gene was shown to undergo frequent reassortment among chicken and turkey origin reoviruses. Additional reassortment events were found primarily within members of the homologous turkey reovirus clade. Our data showed evidence for low variability among strains isolated from independent outbreaks, a finding that suggests a common source of turkey reoviruses in Hungarian turkey flocks. Given that commercial vaccines are not available, identification of the source of these founder virus strains would permit a more efficient prevention of disease outbreaks before young birds are settled to fattening facilities.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Avian orthoreovirus
interspecies transmission
phylogenetic analysis
reassortment
Spinareoviridae
whole-genome sequencing
Megjelenés:Animals. - 13 : 22 (2023), p. 1-12. -
További szerzők:Varga-Kugler Renáta Ihász Katalin Kaszab Eszter (1989-) (biológus) Farkas Szilvia Marton Szilvia Martella, Vito Bányai Krisztián
Pályázati támogatás:RRF-2.3.1-21-2022-00001
Egyéb
TKP2021-EGA-01
Egyéb
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5.

001-es BibID:BIBFORM118512
035-os BibID:(WoS)001075847600001 (Scopus)85172808154 (cikkazonosító)2819
Első szerző:Jakab Szilvia
Cím:Genomic Epidemiology and Evolution of Fowl Adenovirus 1 / Szilvia Jakab, Krisztina Bali, Zalán Homonnay, Eszter Kaszab, Katalin Ihász, Enikő Fehér, Tamás Mató, István Kiss, Vilmos Palya, Krisztián Bányai
Dátum:2023
ISSN:2076-2615
Megjegyzések:Fowl adenovirus 1 (FAdV-1) is the main cause of gizzard erosion in chickens. Whole genome sequencing and sequence analyses of 32 FAdV-1 strains from a global collection provided evidence that multiple recombination events have occurred along the entire genome. In gene-wise phylogenies, only the adenoviral pol gene formed a tree topology that corresponded to whole genome-based phylogeny. Virus genetic features that were clearly connected to gizzard erosion were not identified in our analyses. However, some genome variants tended to be more frequently identified from birds with gizzard erosion and strains isolated from healthy birds or birds with non-specific pathologies tended to form common clusters in multiple gene phylogenies. Our data show that the genetic diversity is greater, and the evolutionary mechanisms are more complex within FAdV-1 than previously thought. The implications of these findings for viral pathogenesis and epidemiology await further investigation.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Animals. - 13 : 18 (2023), p. 1-9. -
További szerzők:Bali Krisztina Homonnay Zalán G. Kaszab Eszter (1989-) (biológus) Ihász Katalin Fehér Enikő (1981-) (molekuláris biológus, mikrobiológus) Mató Tamás Kiss István Palya Vilmos Bányai Krisztián
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6.

001-es BibID:BIBFORM118510
035-os BibID:(WoS)000933472600001 (Scopus)85148345984 (cikkazonosító)1058133
Első szerző:Varga-Kugler Renáta
Cím:Genetic diversity among reptilian orthoreoviruses isolated from pet snakes and lizards / Renáta Varga-Kugler, Katalin Ihász, Szilvia Marton, Eszter Kaszab, Rachel E. Marschang, Szilvia Farkas, Krisztián Bányai
Dátum:2023
ISSN:2297-1769
Megjegyzések:Reovirus infections in reptiles are frequently detected and associated with various clinical diseases; yet, our knowledge about their genetic diversity and evolutionary relationships remains limited. In this study, we characterize at the genomic level five reptile origin orthoreovirus strains isolated from exotic snakes and lizards in Hungary and Germany. The genomic organization of the study strains was similar to that of the representative strains of reptile origin reoviruses belonging to species Reptilian orthoreovirus and Testudine orthoreovirus. Additionally, all five study strains clustered with the bush viper origin reference Reptilian orthoreovirus strain, 47/02. The nucleotide sequence divergence among strains fell from 56.64 to 99.36%. Based on genome segment constellations two well separated groups were observed, which may represent two genetic lineages of reptilian orthoreoviruses we tentatively referred here as genogroups, classifying two squamata origin strains with available whole genome sequences into genogroup I (GGI) and four strains into genogroup II (GGII). The representative GGI and GGII Reptilian orthoreovirus strains are characterized by moderate-to-high nucleotide and amino acid similarities within genogroups (range, 69.45 to 99.36% and 74.64 to 100.00%), whereas lower nucleotide and amino acid similarities (range, 56.64 to 77.24% and 54.53 to 93.85%) and different structures of the bicistronic S1 segment were found between genogroups. Further studies are needed to explore the genomic diversity among reptilian reoviruses of squamata origin; this would be critical to establish a robust classification system for these viruses and to see if interaction among members of distinct lineages may result in viable progenies with novel genetic features.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Frontiers in Veterinary Science. - 10 (2023), p. 1-8. -
További szerzők:Ihász Katalin Marton Szilvia Kaszab Eszter (1989-) (biológus) Marschang, Rachel E. Farkas Szilvia Bányai Krisztián
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