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001-es BibID:	BIBFORM074051
035-os BibID:	(cikkazonosító)1193 (WOS)000434951800001 (Scopus)85048341000
Első szerző:	Sipiczki Mátyás (biológus)
Cím:	Birth-and-Death Evolution and Reticulation of ITS Segments of Metschnikowia andauensis and Metschnikowia fructicola rDNA Repeats / Sipiczki Matthias, Horvath Eniko, Pfliegler Walter P.
Dátum:	2018
ISSN:	1664-302X
Megjegyzések:	The internal transcribed spacer (ITS) region (ITS1, 5.8S rDNA, and ITS2) separates the genes coding for the SSU 18S and the LSU 26S genes in the rDNA units which are organized into long tandem arrays in the overwhelming majority of fungi. As members of a multigenic family, these units are subject of concerted evolution, which homogenizes their sequences. Exceptions have been observed in certain groups of plants and in a few fungal species. In our previous study we described exceptionally high degree of sequence diversity in the D1/D2 domains of two pulcherrimin-producing Metschnikowia (Saccharomycotina) species which appeared to evolve by reticulation. The major goals of this study were the examination of the diversity of the ITS segments and their evolution. We show that the ITS sequences of these species are not homogenized either, differ from each other by up to 38 substitutions and indels which have dramatic effects on the predicted secondary structures of the transcripts. The high intragenomic diversity makes the D1/D2 domains and the ITS spacers unsuitable for barcoding of these species and therefore the taxonomic position of strains previously assigned to them needs revision. By analyzing the genome sequence of the M. fructicola type strain, we also show that the rDNA of this species is fragmented, contains pseudogenes and thus evolves by the birth-and-death mechanism rather than by homogenisation, which is unusual in yeasts. The results of the network analysis of the sequences further indicate that the ITS regions are also involved in reticulation. M. andauensis and M. fructicola can form interspecies hybrids and their hybrids segregate, providing thus possibilities for reticulation of the rDNA repeats.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk structure prediction yeast ribosomal RNA ITS evolution pseudogene reticulation hybridisation
Megjelenés:	Frontiers in Microbiology. - 9 (2018), p. 1-16. -
További szerzők:	Horváth Enikő (1987-) (biológus) Pfliegler Valter Péter (1986-) (molekuláris biológus)
Pályázati támogatás:	K-124417 Egyéb TÁMOP-4.2.4.A/2-11/1-2012-0001 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM102694
035-os BibID:	(cikkazonosító)838 (WOS)000536917600001 (Scopus)85085094425
Első szerző:	Szabó Adrienn (biológus)
Cím:	Diversity and Postzygotic Evolution of the Mitochondrial Genome in Hybrids of Saccharomyces Species Isolated by Double Sterility Barrier / Szabó Adrienn, Antunovics Zsuzsa, Karanyicz Edina, Sipiczki Matthias
Dátum:	2020
ISSN:	1664-302X
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk yeast hybrids
Megjelenés:	Frontiers in Microbiology. - 11 (2020), p. 1-22. -
További szerzők:	Antunovics Zsuzsa (1978-) (molekuláris biológus, genetikus) Karanyicz Edina Sipiczki Mátyás (1948-) (biológus)
Pályázati támogatás:	NKFIH-K-124417 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM105606
035-os BibID:	(Scopus)85126743478 (WoS)000772140000001
Első szerző:	Taubenheim, Jan
Cím:	Population Differences and Host Species Predict Variation in the Diversity of Host-Associated Microbes in Hydra / Jan Taubenheim, Máté Miklós, Jácint Tökölyi, Sebastian Fraune
Dátum:	2022
ISSN:	1664-302X
Megjegyzések:	Most animals co-exist with diverse host-associated microbial organisms that often form complex communities varying between individuals, habitats, species and higher taxonomic levels. Factors driving variation in the diversity of host-associated microbes are complex and still poorly understood. Here, we describe the bacterial composition of field-collected Hydra, a freshwater cnidarian that forms stable associations with microbial species in the laboratory and displays complex interactions with components of the microbiota. We sampled Hydra polyps from 21 Central European water bodies and identified bacterial taxa through 16S rRNA sequencing. We asked whether diversity and taxonomic composition of host-associated bacteria depends on sampling location, habitat type, host species or host reproductive mode (sexual vs. asexual). Bacterial diversity was most strongly explained by sampling location, suggesting that the source environment plays an important role in the assembly of bacterial communities associated with Hydra polyps. We also found significant differences between host species in their bacterial composition that partly mirrored variations observed in lab strains. Furthermore, we detected a minor effect of host reproductive mode on bacterial diversity. Overall, our results suggest that extrinsic (habitat identity) factors predict the diversity of hostassociated bacterial communities more strongly than intrinsic (species identity) factors, however, only a combination of both factors determines microbiota composition in Hydra.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk determinants of microbial community holobiont assembly metaorganism ecology of microbial communities host-microbe balance/interaction
Megjelenés:	Frontiers in Microbiology. - 13 (2022), p. 1-17. -
További szerzők:	Miklós Máté (1994-) (biológus) Tökölyi Jácint (1984-) (biológus) Fraune, Sebastian
Pályázati támogatás:	ÚNKP-21-4-I gyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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