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001-es BibID:BIBFORM091929
Első szerző:Laczkó Levente (biológus)
Cím:Hepatica transsilvanica Fuss (Ranunculaceae) is an Allotetraploid Relict of the Tertiary Flora in Europe ? Molecular Phylogenetic Evidence / Laczkó Levente, Sramkó Gábor
Dátum:2020
ISSN:0001-6977 2083-9480
Megjegyzések:The Hepatica section Angulosa consists of mainly tetraploid (2n = 28) species that are distributed disjunctly throughout Eurasia. Karyological evidence proves the hybrid origin of the polyploid species of this section. Hepatica transsilvanica is a member of this species group with a conspicuous distribution restricted to the Eastern Carpathians. Based on genome size and cytotypes, the paternal parent of H. transsilvanica is described to be the only diploid species in section Angulosa, H. falconeri. The maternal species is hypothesized to be H. nobilis, a European species with entirely lobed leaves and a wider distribution area. Although the hybrid origin of H. transsilvanica is well documented by karyological evidence, the time of hybridization has never been studied. By using sequences of both the nuclear and plastid genome, we reconstructed the phylogenetic relationships and divergence times of H. transsilvanica and its parental species. The identity of the parental species is corroborated by discordant gene tree topologies of the nrITS and plastid sequences. Moreover, both gene copies of the parental species could be identified with the low-copy nuclear gene, MLH1. Divergence dating analysis using Bayesian phylogenetic methods strongly supported the long-term survival of H. transsilvanica in the Southeastern Carpathians, as the most recent common ancestor of the hybrid and parent species existed not later than the beginning of the Pleistocene, ca. 3 million years ago. These results not only highlight the biogeographic importance of the Southeastern Carpathians in the Quaternary glaciation periods, but also emphasize that Tertiary lineages could have survived in a Central European cryptic refugium.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Acta Societatis Botanicorum Poloniae. - 89 : 3 (2020), p. 1-14. -
További szerzők:Sramkó Gábor (1981-) (biológus)
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2.

001-es BibID:BIBFORM064135
Első szerző:Lovas-Kiss Ádám (biológus, botanikus)
Cím:Strong potential for endozoochory by waterfowl in a rare, ephemeral wetland plant species, Astragalus contortuplicatus (Fabaceae) / Ádám Lovas-Kiss, Judit Sonkoly, Orsolya Vincze, Andy J. Green, Attila Takács, Attila Molnár V.
Dátum:2015
ISSN:0001-6977 2083-9480
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Acta Societatis Botanicorum Poloniae 84 : 3 (2015), p. 321-326. -
További szerzők:Sonkoly Judit (1989-) (biológus) Vincze Orsolya (1988-) (biológus) Green, Andy J. Takács Attila (1989-) (biológus, botanikus) Molnár V. Attila (1969-) (biológus, botanikus)
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3.

001-es BibID:BIBFORM078211
Első szerző:Molnár V. Attila (biológus, botanikus)
Cím:Using traditional ecological knowledge in discovery of rare plants: a case study from Turkey / Molnár V. Attila, Süveges Kristóf, Molnár Zsolt, Löki Viktor
Dátum:2017
ISSN:2083-9480
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Acta Societatis Botanicorum Poloniae. - 86 : 3 (2017), p. 1-10. -
További szerzők:Süveges Kristóf (1994-) Molnár Zsolt (biológus) Löki Viktor (1989-) (biológus)
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4.

001-es BibID:BIBFORM066833
035-os BibID:(Scopus)85019678782 (WOS)000439311400002 (cikkazonosító)3525
Első szerző:Resetár Anna
Cím:Production and antioxidant capacity of tissue cultures from four Amaryllidaceae species / Anna Resetár, Csongor Freytag, Fruzsina Kalydi, Sándor Gonda, Márta M-Hamvas, Kitti Ajtay, László Papp, Csaba Máthé
Dátum:2017
ISSN:0001-6977
Megjegyzések:The aim of this study was (i) to produce tissue cultures capable of efficient plant regeneration from European naturally occurring protected and/or pharmacologically important Amaryllidaceae species, and (ii) to test them for antioxidant activities in order to select tissue cultures that scavenge efficiently oxygen radicals. Bulb explants were collected from Galanthus woronowii, two Leucojum species and Sternbergia lutea- Leucojum species being Hungarian isolates. Mostly ?-naphthalene acetic acid (NAA) and benzyladenine (BA) were used as growth regulator combinations for the induction and maintenance of tissue cultures and further antioxidant activity studies. G. woronowii and L. vernum cultures produced shoots or whole plants via micropropagation (callus stage was observed only sporadically and callus tissue did not contribute to regeneration), whereas L. aestivum and S. lutea produced efficiently whole plants or multiple shoots via embryogenic calli. Total phenolic content, % inhibition of ABTS radical (ABTS*) cation and peroxidase activities on native polyacrylamide gels were studied and showed differences between cultures. No relationship could be detected between polyphenol content/ radical scavenging capacities and H2O2 reducing enzyme activities. For G. woronowii, S. lutea and a culture line of L. vernum, polyphenol content and ABTS* cation scavenging activities were high and for G. woronowii, comparable to organs of the native plants used as explant sources. Bulbs of native plants showed low radical scavenging activities in general. For L. vernum and L. aestivum tissue cultures grown in the presence of NAA as the sole growth regulator, ABTS* cation scavenging showed low values. Enzymatic antioxidant (pyrogallol peroxidase) activities were low for all cultures and organs of native plants. This study shows the species conservation value of these cultures and highlights the high antioxidant capacity of G. woronowii and S. lutea, attributed to the presence of non-enzymatic scavengers.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Amaryllidaceae
micropropagation
somatic embryogenesis
free radical scavenging
pyrogallol peroxidase
Megjelenés:Acta Societatis Botanicorum Poloniae. - 86 : 1 (2017), p. 1-12. -
További szerzők:Freytag Csongor (1993-) (biológus) Kalydi Fruzsina Gonda Sándor (1984-) (gyógyszerész) Mikóné Hamvas Márta (1963-) (biológus) Ajtay Kitti Papp László (1958-) (biológus, botanikus) Máthé Csaba (1966-) (biológus)
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5.

001-es BibID:BIBFORM091928
Első szerző:Volkova, Polina A.
Cím:Out of Colchis: The Colonization of Europe by Primula vulgaris Huds. (Primulaceae) / Polina Volkova, Levente Laczkó, Olga Demina, Ivan Schanzer, Gábor Sramkó
Dátum:2020
ISSN:0001-6977 2083-9480
Megjegyzések:In the cold periods of Quaternary climatic fluctuations, many temperate species underwent severe range contractions, and their survival during these periods was associated with climatically more favorable regions, so-called glacial refugia, from which subsequent range expansions took place. In this regard, the relative roles of the Southern ("main"), Northern (i.e., cryptic northern), and Eastern European (e.g., Colchis) refugia in shaping the evolutionary history of European temperate plants should be evaluated. In this study, we investigated the phylogeographic structure of Primula vulgaris, a European mesophilous species, by comparing DNA sequences derived from the nuclear (nrITS) and the plastid (trnL-trnF and rpl32-trnL) genomes of specimens covering the entire distribution range of the species. The variability in flower morphology was also studied on an area-wide scale with geometric morphometry. Our results clearly show the importance of the northern and eastern refugia (the Carpathian Basin and Colchis) as sources of genetic variation among European mesophilous plant species. Primula vulgaris spread initially from the Colchis refugium westwards, and a proportion of the colonists survived during the last glacial period in the Carpathian Basin, which may have served as a secondary center of diversity from which all Europe was subsequently populated.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Acta Societatis Botanicorum Poloniae. - 89 : 3 (2020), p. 1-15. -
További szerzők:Laczkó Levente (1992-) (biológus) Demina, Olga Schanzer, Ivan Sramkó Gábor (1981-) (biológus)
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