Hörandl, Elvira

[["dc.bibliographiccitation.artnumber","1111"],["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Barke, Birthe H."],["dc.contributor.author","Daubert, Mareike"],["dc.contributor.author","Hörandl, Elvira"],["dc.date.accessioned","2019-07-09T11:45:43Z"],["dc.date.available","2019-07-09T11:45:43Z"],["dc.date.issued","2018"],["dc.description.abstract","Hybridization and polyploidization play important roles in plant evolution but it is still not fully clarified how these evolutionary forces contribute to the establishment of apomicts. Apomixis, the asexual reproduction via seed formation, comprises several essential alterations in development compared to the sexual pathway. Furthermore, most natural apomicts were found to be polyploids and/or hybrids. The Ranunculus auricomus complex comprises diploid sexual and polyploid apomictic species and represents an excellent model system to gain knowledge on origin and evolution of apomixis in natural plant populations. In this study, the second generation of synthetically produced homoploid (2x) and heteroploid (3x) hybrids derived from sexual R. auricomus species was analyzed for aposporous initial cell formation by DIC microscopy. Complete manifestation of apomixis was determined by measuring single mature seeds by flow cytometric seed screen. Microscopic analysis of the female gametophyte formation indicated spontaneous occurrence of aposporous initial cells and several developmental irregularities. The frequency of apospory was found to depend on dosage effects since a significant increase in apospory was observed, when both F1 parents, rather than just one, were aposporous. Other than in the F1 generation, diploid Ranunculus F2 hybrids formed BIII seeds and fully apomictic seeds. The results indicate that hybridization rather than polyploidization seems to be the functional activator of apomictic reproduction in the synthetic Ranunculus hybrids. In turn, at least two hybrid generations are required to establish apomictic seed formation."],["dc.identifier.doi","10.3389/fpls.2018.01111"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15296"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59296"],["dc.language.iso","en"],["dc.notes.intern","DeepGreen Import"],["dc.publisher","Frontiers Media S.A."],["dc.relation.eissn","1664-462X"],["dc.relation.issn","1664-462X"],["dc.rights","http://creativecommons.org/licenses/by/4.0/"],["dc.subject.ddc","570"],["dc.title","Establishment of Apomixis in Diploid F2 Hybrids and Inheritance of Apospory From F1 to F2 Hybrids of the Ranunculus auricomus Complex"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","315"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Biology"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Syngelaki, Eleni"],["dc.contributor.author","Daubert, Mareike"],["dc.contributor.author","Klatt, Simone"],["dc.contributor.author","Hörandl, Elvira"],["dc.date.accessioned","2021-04-14T08:31:10Z"],["dc.date.available","2021-04-14T08:31:10Z"],["dc.date.issued","2020"],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft"],["dc.identifier.doi","10.3390/biology9100315"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17591"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83504"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","MDPI"],["dc.relation.eissn","2079-7737"],["dc.rights","https://creativecommons.org/licenses/by/4.0/"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Phenotypic Responses, Reproduction Mode and Epigenetic Patterns under Temperature Treatments in the Alpine Plant Species Ranunculus kuepferi (Ranunculaceae)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2659"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Molecular Ecology"],["dc.bibliographiccitation.lastpage","2675"],["dc.bibliographiccitation.volume","30"],["dc.contributor.affiliation","Tomasello, Salvatore; 1Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium) Albrecht‐von‐Haller Institute for Plant Sciences University of Göttingen Göttingen Germany"],["dc.contributor.affiliation","Hodač, Ladislav; 1Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium) Albrecht‐von‐Haller Institute for Plant Sciences University of Göttingen Göttingen Germany"],["dc.contributor.affiliation","Lorberg, Ellen; 1Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium) Albrecht‐von‐Haller Institute for Plant Sciences University of Göttingen Göttingen Germany"],["dc.contributor.affiliation","Daubert, Mareike; 1Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium) Albrecht‐von‐Haller Institute for Plant Sciences University of Göttingen Göttingen Germany"],["dc.contributor.author","Karbstein, Kevin"],["dc.contributor.author","Tomasello, Salvatore"],["dc.contributor.author","Hodač, Ladislav"],["dc.contributor.author","Lorberg, Ellen"],["dc.contributor.author","Daubert, Mareike"],["dc.contributor.author","Hörandl, Elvira"],["dc.date.accessioned","2021-06-01T09:42:03Z"],["dc.date.available","2021-06-01T09:42:03Z"],["dc.date.issued","2021"],["dc.date.updated","2022-03-21T06:14:46Z"],["dc.description.abstract","Abstract Geographical parthenogenesis (GP) describes the phenomenon that apomicts tend to have larger distribution areas and/or occur at higher altitudes or latitudes compared to sexual relatives. However, the complex effects of genome‐wide heterozygosity, ploidy, reproduction mode (sexual vs. apomictic), and environment shaping GP of plants are still not well understood. We ascertained ploidy and reproduction mode by flow cytometry of 221 populations, and added genomic RADseq data (maximum 33,165 loci) of 80 taxa of the Ranunculus auricomus polyploid plant complex in temperate Europe. We observed 7% mainly diploid sexual, 28% facultative apomictic (mean sexuality 7.1%), and 65% obligate apomictic populations. Sexuals occupied a more southern, smaller distribution area, whereas apomicts expanded their range to higher latitudes. Within the complex, we detected three main genetic clusters and highly reticulate relationships. A genetically‐informed path analysis using GLMMs revealed several significant relationships. Sexuality of populations (percent of sexual seeds) was higher in diploids compared to polyploids, associated with more petals, and similar between forests and open habitats. In contrast to other apomictic plant complexes, sexuality was mainly positively correlated to solar radiation and isothermality, which fits the southern distribution. We found up to three times higher heterozygosity in polyploids compared to diploids, and generally more heterozygous individuals in forests compared with open habitats. Interestingly, we revealed a previously unknown positive association between heterozygosity and temperature seasonality, suggesting a higher resistance of polyploids to more extreme climatic conditions. We provide empirical evidence for intrinsic and extrinsic factors shaping the GP pattern in a polyploid plant complex."],["dc.description.sponsorship","German Research Foundation http://dx.doi.org/10.13039/501100001659"],["dc.identifier.doi","10.1111/mec.15919"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/85129"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","1365-294X"],["dc.relation.issn","0962-1083"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited."],["dc.title","Moving beyond assumptions: Polyploidy and environmental effects explain a geographical parthenogenesis scenario in European plants"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1191"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","TAXON"],["dc.bibliographiccitation.lastpage","1220"],["dc.bibliographiccitation.volume","69"],["dc.contributor.author","Karbstein, Kevin"],["dc.contributor.author","Tomasello, Salvatore"],["dc.contributor.author","Hodač, Ladislav"],["dc.contributor.author","Dunkel, Franz G."],["dc.contributor.author","Daubert, Mareike"],["dc.contributor.author","Hörandl, Elvira"],["dc.date.accessioned","2021-04-14T08:32:17Z"],["dc.date.available","2021-04-14T08:32:17Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1002/tax.12365"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83872"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1996-8175"],["dc.relation.issn","0040-0262"],["dc.title","Phylogenomics supported by geometric morphometrics reveals delimitation of sexual species within the polyploid apomictic Ranunculus auricomus complex (Ranunculaceae)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","BMC Plant Biology"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Barke, Birthe H."],["dc.contributor.author","Karbstein, Kevin"],["dc.contributor.author","Daubert, Mareike"],["dc.contributor.author","Hörandl, Elvira"],["dc.date.accessioned","2021-04-14T08:32:19Z"],["dc.date.available","2021-04-14T08:32:19Z"],["dc.date.issued","2020"],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.1186/s12870-020-02654-3"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17658"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83881"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","1471-2229"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","The relation of meiotic behaviour to hybridity, polyploidy and apomixis in the Ranunculus auricomus complex (Ranunculaceae)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]