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001-es BibID:	BIBFORM117897
035-os BibID:	(Scopus)85182225631 (WoS)001141770200001 (cikkazonosító)e17265
Első szerző:	Magura Tibor (ökológus)
Cím:	Urbanization reduces gut bacterial microbiome diversity in a specialist ground beetle, Carabus convexus / Tibor Magura, Szabolcs Mizser, Roland Horváth, Mária Tóth, István Likó, Gábor Lövei
Dátum:	2024
ISSN:	0962-1083
Megjegyzések:	Urbanization is rapidly shaping and transforming natural environments, creating networks of modified land types. These urbanization-driven modifications lead to local extinctions of several species, but the surviving ones also face numerous novel selection pressures, including exposure to pollutants, habitat alteration, and shifts in food availability and diversity. Based on the assumption that the environmental pool of microorganisms is reduced in urban habitats due to habitat alteration, biodiversity loss, and pollution, we hypothesized that the diversity of bacterial microbiome in digestive tracts of arthropods would be lower in urban than rural habitats. Investigating the gut bacterial communities of a specialist ground beetle, Carabus convexus, in forested rural versus urban habitats by next generation high-throughput sequencing of the bacterial 16S rRNA gene, we identified 3839 bacterial amplicon sequence variants. The composition of gut bacterial samples did not significantly differ by habitat (rural vs. urban), sex (female vs. male), sampling date (early vs. late spring), or their interaction. The microbiome diversity (evaluated by the Rényi diversity function), however, was higher in rural than urban adults. Our findings demonstrate that urbanization significantly reduced the diversity of the gut bacterial microbiome in C. convexus.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk carabid habitat alteration microorganisms next generation sequencing rural urban
Megjelenés:	Molecular Ecology. - [Epub ahead of print] : - (2024), p. -. -
További szerzők:	Mizser Szabolcs (1977-) (biológus-ökológus) Horváth Roland (1974-) (biológus-ökológus) Tóth Mária (1985-) Likó István Lövei Gábor L.
Pályázati támogatás:	K-131459 Egyéb K-146628 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM096013
035-os BibID:	(WoS)000613886100001 (Scopus)85100173315
Első szerző:	Miklós Máté (biológus)
Cím:	Phenotypic plasticity rather than genotype drives reproductive choices in Hydra populations / Máté Miklós, Levente Laczkó, Gábor Sramkó, Flóra Sebestyén, Zoltán Barta, Jácint Tökölyi
Dátum:	2021
ISSN:	0962-1083
Megjegyzések:	Facultative clonality is associated with complex life cycles where sexual and asexual forms can be exposed to contrasting selection pressures. Facultatively clonal animals often have distinct developmental capabilities that depend on reproductive mode (e.g., negligible senescence and exceptional regeneration ability in asexual individuals, which are lacking in sexual individuals). Understanding how these differences in life history strategies evolved is hampered by limited knowledge of the population structure underlying sexual and asexual forms in nature. Here we studied genetic differentiation of coexisting sexual and asexual Hydra oligactis polyps, a freshwater cnidarian where reproductive mode-dependent life history patterns are observed. We collected asexual and sexual polyps from 13 Central European water bodies and used restriction-site associated DNA sequencing to infer population structure. We detected high relatedness among populations and signs that hydras might spread with resting eggs through zoochory. We found no genetic structure with respect to mode of reproduction (asexual vs. sexual). On the other hand, clear evidence was found for phenotypic plasticity in mode of reproduction, as polyps inferred to be clones differed in reproductive mode. Moreover, we detected two cases of apparent sex change (males and females found within the same clonal lineages) in this species with supposedly stable sexes. Our study describes population genetic structure in Hydra for the first time, highlights the role of phenotypic plasticity in generating patterns of life history variation, and contributes to understanding the evolution of reproductive mode-dependent life history variation in coexisting asexual and sexual forms.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk clonal reproduction eco-evo- devo phenotypic plasticity population genomics RAD-seq sex change
Megjelenés:	Molecular Ecology. - 30 : 5 (2021), p. 1206-1222. -
További szerzők:	Laczkó Levente (1992-) (biológus) Sramkó Gábor (1981-) (biológus) Sebestyén Flóra (1993-) (biológus) Barta Zoltán (1967-) (biológus, zoológus) Tökölyi Jácint (1984-) (biológus)
Pályázati támogatás:	NKFIH FK 124164 Egyéb ÚNKP-19- 3 Egyéb ÚNKP-19- 4 Egyéb János Bolyai Research Scholarship of the Hungarian Academy of Sciences Egyéb Higher Education Institutional Excellence Program of the Ministry of Human Capacities in Hungary, FIK-Lendület Behavioral Ecology Research Group Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM104432
035-os BibID:	(WOS)000750635800001 (Scopus)85124135780
Első szerző:	Sipiczki Mátyás (biológus)
Cím:	When barcoding fails : Genome chimerization (admixing) and reticulation obscure phylogenetic and taxonomic relationships / Matthias Sipiczki
Dátum:	2022
ISSN:	1755-098X 1755-0998
Megjegyzések:	DNA barcoding is based on the premise that the barcode sequences can distinguish individuals (strains) of different species because their sequence variation between species exceeds that within species. The primary barcodes used in fungal and yeast taxonomy are the ITS segments and the LSU (large subunit) D1/D2 domain of the homogenized multicopy rDNA repeats. The secondary barcodes are conserved segments of protein-encoding genes, which usually have single copies in haploid genomes. This study shows that the analysis of barcode sequences fails to reconstruct accurate species trees and differentiate species when the organisms have chimeric genomes composed of admixed mosaics of different origins. It is shown that the type strains of 10 species of the pulcherrima clade of the ascomycetous yeast genus Metschnikowia cannot be differentiated with standard barcodes because their intragenomic diversity is comparable to or even higher than the interstrain diversity. The analysis of a large group of genes of the sequenced genomes of the clade and the viability and segregation of the hybrids of ex-type strains indicate that the high intragenomic barcode differences can be attributed to admixed genome structures. Because of the mosaic structures of the genomes, the rDNA repeats do not form continuous arrays and thus cannot be homogenized. Since the highly diverse ITS and D1/D2 sequences of the type strains form a continuous pool including pseudogenes, the evolution of their rDNA appears to involve reticulation. The secondary barcode sequences and the nonbarcode genes included in the analysis show incongruent phylogenetic relationships among the type strains, which can also be attributed to differences in the phylogenetic histories of the genes.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk barcodes Metschnikowia mosaic genome network analysis phylogenetic analysis reticulation rRNA secondary structure
Megjelenés:	Molecular Ecology Resources. - 22 : 5 (2022), p. 1762-1785. -
Pályázati támogatás:	NKFIH-2019-2.1.11-TÉT2019-00001 Egyéb NKFIH-K-124417 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM021910
Első szerző:	Varga Zoltán (professor emeritus, evolúcióbiológus, zoológus)
Cím:	Mountain coniferous forests, refugia and butterflies / Zoltán Varga
Dátum:	2008
Megjegyzések:	The boreal coniferous forests form the most extended vegetation zone of the Northern Hemisphere. As opposed to North America, they are disconnected from the mountain coniferous forests in Europe, because of the dominant east-west direction of the mountain chains. Consequently, the mountain forests show some unique characteristic features of glacial survival and postglacial history, as well. The mountain coniferous forests have numerous common floral and faunal elements with the boreal zone. However, the few unique faunal elements of the European mountain coniferous forests can be used to unravel the peculiar patterns and processes of this biome. In this issue of Molecular Ecology, Thomas Schmitt and Karola Haubrich (2008) use the relatively common and taxonomically well-studied butterfly, the large ringlet (Erebia euryale) to identify the last glacial refugia and postglacial expansion routes
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban Carpathian biodiversity extra-Mediterranean core areas forest refugia large ringlet (Erebia euryale) Weichsel glaciation
Megjelenés:	Molecular Ecology. - 17 : 9 (2008), p. 2101-2103. -
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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