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001-es BibID:BIBFORM115741
035-os BibID:(cikkazonosító)107958 (WoS)001113526000001 (Scopus)85177758500
Első szerző:Németh Attila (biológus)
Cím:Evolutionary history and systematics of European blind mole rats (Rodentia: Spalacidae: Nannospalax): Multilocus phylogeny and species delimitation in a puzzling group / Attila Németh, Edvárd Mizsei, Levente Laczkó, Dávid Czabán, Zsolt Hegyeli, Szabolcs Lengyel, Gábor Csorba, Gábor Sramkó
Dátum:2024
ISSN:1055-7903
Megjegyzések:Species delimitation is a powerful approach to assist taxonomic decisions in challenging taxa where species boundaries are hard to establish. European taxa of the blind mole rats (genus Nannospalax) display small morphological differences and complex chromosomal evolution at a shallow evolutionary divergence level. Previous analyses led to the recognition of 25 ♭forms' in their distribution area. We provide a comprehensive framework to improve knowledge on the evolutionary history and revise the taxonomy of European blind mole rats based on samples from all but three of the 25 forms. We sequenced two nuclear-encoded genetic regions and the whole mitochondrial cytochrome b gene for phylogenetic tree reconstructions using concatenation and coalescence-based species-tree estimations. The phylogenetic analyses confirmed that Aegean N. insularis belongs to N. superspecies xanthodon, and that it represents the second known species of this superspecies in Europe. Mainland taxa reached Europe from Asia Minor in two colonisation events corresponding to two superspecies-level taxa: N. superspecies monticola (taxon established herewith) reached Europe c. 2.1 million years ago (Mya) and was followed by N. superspecies leucodon (re-defined herewith) c. 1.5 Mya. Species delimitation allowed the clarification of the taxonomic contents of the above superspecies. N. superspecies monticola contains three species geographically confined to the western periphery of the distribution of blind mole rats, whereas N. superspecies leucodon is more speciose with six species and several additional subspecies. The observed geographic pattern hints at a robust peripatric speciation process and rapid chromosomal evolution. The present treatment is thus regarded as the minimum taxonomic content of each lineage, which can be further refined based on other sources of information such as karyological traits, crossbreeding experiments, etc. The species delimitation models also allowed the recognition of a hitherto unnamed blind mole rat taxon from Albania, described here as a new subspecies.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
divergence dating
evolutionary history
nuclear genes
species delimitation
species tree
taxonomic revision
Megjelenés:Molecular Phylogenetics And Evolution. - 190 (2024), p. 1-13. -
További szerzők:Mizsei Edvárd (1989-) (biológus ökológus) Laczkó Levente (1992-) (biológus) Czabán Dávid Hegyeli Zsolt Lengyel Szabolcs (1971-) (biológus) Csorba Gábor Sramkó Gábor (1981-) (biológus)
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001-es BibID:BIBFORM091933
035-os BibID:(WoS)000465983800005 (Scopus)85062452291
Első szerző:Sramkó Gábor (biológus)
Cím:Evolutionary history of the Pasque-flowers (Pulsatilla, Ranunculaceae) : Molecular phylogenetics, systematics and rDNA evolution / Sramkó Gábor, Laczkó Levente, Volkova Polina A., Bateman Richard M., Mlinarec Jelena
Dátum:2019
ISSN:1055-7903
Megjegyzések:Pulsatilla (Anemoneae, Ranunculaceae) is sister to Anemone s.s. and contains ca 40 perennial species of considerable horticultural and medical importance. We sequenced 31 of those species, plus nine subspecies, two cultivars and six outgroups, for two nuclear regions (high-copy nrITS and low-copy MLH1) and three plastid regions (rbcL, accD?psaI, trnL intron) in order to generate the first comprehensive species-level phylogeny of the genus. Phylogenetic trees were constructed using both concatenation-based (maximum likelihood and Bayesian inference) and coalescence methods. The better supported among the internal nodes were subjected to molecular clock dating and ancestral area reconstruction, and karyotypic characters identified by us using Fluorescence In Situ Hybridization were mapped across the tree. The preferred species tree from the coalescence analysis formed the basis of a new infrageneric classification based on monophyly plus degree of divergence. The earliest divergent of the three subgenera, Kostyczewianae, is represented by only a single species that is morphologically intermediate between Anemone s.s. and ♭core' Pulsatilla. Subgenus Pulsatilla is considerably richer in species than its sister subgenus Preonanthus and contains three monophyletic sections. Species possessing nodding flowers and pectinately dissected leaves are phylogenetically derived compared with groups possessing erect flowers and palmately lobed leaves. Pulsatilla separated from Anemone s.s. at ca 25?Ma. Our results indicate a central Asian mountain origin of the genus and an initial diversification correlated with late Tertiary global cooling plus regional mountain uplift, aridification and consequent expansion of grasslands. The more rapid and extensive diversification within subgenus Pulsatilla began at ca 3?Ma and continued throughout the Quaternary, driven not only by major perturbations in global climate but also by well-documented polyploidy.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Molecular Phylogenetics And Evolution. - 135 (2019), p. 45-61. -
További szerzők:Laczkó Levente (1992-) (biológus) Volkova, Polina A. Bateman, Richard M. Mlinarec, Jelena
Pályázati támogatás:PD109686
OTKA
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