Hörandl, Elvira

[["dc.bibliographiccitation.firstpage","3318"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","International Journal of Molecular Sciences"],["dc.bibliographiccitation.volume","21"],["dc.contributor.affiliation","Schinkel, Christoph C. F.; \t\t \r\n\t\t Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium), University of Goettingen, Untere Karspüle 2, 37073 Göttingen, Germany, christoph.cf.schinkel@gmail.com"],["dc.contributor.affiliation","Syngelaki, Eleni; \t\t \r\n\t\t Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium), University of Goettingen, Untere Karspüle 2, 37073 Göttingen, Germany, eleni.syngelaki@uni-goettingen.de"],["dc.contributor.affiliation","Kirchheimer, Bernhard; \t\t \r\n\t\t Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Vienna, Austria, bernhard.kirchheimer@univie.ac.at"],["dc.contributor.affiliation","Dullinger, Stefan; \t\t \r\n\t\t Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Vienna, Austria, stefan.dullinger@univie.ac.at"],["dc.contributor.affiliation","Klatt, Simone; \t\t \r\n\t\t Section Safety and Environmental Protection, University of Goettingen, Humboldtallee 15, 37073 Göttingen, Germany, simone.klatt@zvw.uni-goettingen.de"],["dc.contributor.affiliation","Hörandl, Elvira; \t\t \r\n\t\t Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium), University of Goettingen, Untere Karspüle 2, 37073 Göttingen, Germany, ehoeran@gwdg.de"],["dc.contributor.author","Schinkel, Christoph C. F."],["dc.contributor.author","Syngelaki, Eleni"],["dc.contributor.author","Kirchheimer, Bernhard"],["dc.contributor.author","Dullinger, Stefan"],["dc.contributor.author","Klatt, Simone"],["dc.contributor.author","Hörandl, Elvira"],["dc.date.accessioned","2021-04-14T08:26:23Z"],["dc.date.available","2021-04-14T08:26:23Z"],["dc.date.issued","2020"],["dc.date.updated","2022-09-07T00:24:28Z"],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft"],["dc.description.sponsorship","Austrian Science Fund"],["dc.identifier.doi","10.3390/ijms21093318"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17424"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81927"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","1422-0067"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Epigenetic Patterns and Geographical Parthenogenesis in the Alpine Plant Species Ranunculus kuepferi (Ranunculaceae)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","716"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of Biogeography"],["dc.bibliographiccitation.lastpage","726"],["dc.bibliographiccitation.volume","43"],["dc.contributor.author","Kirchheimer, Bernhard"],["dc.contributor.author","Schinkel, Christoph C. F."],["dc.contributor.author","Dellinger, Agnes S."],["dc.contributor.author","Klatt, Simone"],["dc.contributor.author","Moser, Dietmar"],["dc.contributor.author","Winkler, Manuela"],["dc.contributor.author","Lenoir, Jonathan"],["dc.contributor.author","Caccianiga, Marco"],["dc.contributor.author","Guisan, Antoine"],["dc.contributor.author","Nieto-Lugilde, Diego"],["dc.contributor.author","Svenning, Jens-Christian"],["dc.contributor.author","Thuiller, Wilfried"],["dc.contributor.author","Vittoz, Pascal"],["dc.contributor.author","Willner, Wolfgang"],["dc.contributor.author","Zimmermann, Niklaus E."],["dc.contributor.author","Hoerandl, Elvira"],["dc.contributor.author","Dullinger, Stefan"],["dc.date.accessioned","2018-11-07T10:16:26Z"],["dc.date.available","2018-11-07T10:16:26Z"],["dc.date.issued","2016"],["dc.description.abstract","AimEmerging polyploids may depend on environmental niche shifts for successful establishment. Using the alpine plant Ranunculus kuepferi as a model system, we explore the niche shift hypothesis at different spatial resolutions and in contrasting parts of the species range. LocationEuropean Alps. MethodsWe sampled 12 individuals from each of 102 populations of R. kuepferi across the Alps, determined their ploidy levels, derived coarse-grain (100x100m) environmental descriptors for all sampling sites by downscaling WorldClim maps, and calculated fine-scale environmental descriptors (2x2m) from indicator values of the vegetation accompanying the sampled individuals. Both coarse and fine-scale variables were further computed for 8239 vegetation plots from across the Alps. Subsequently, we compared niche optima and breadths of diploid and tetraploid cytotypes by combining principal components analysis and kernel smoothing procedures. Comparisons were done separately for coarse and fine-grain data sets and for sympatric, allopatric and the total set of populations. ResultsAll comparisons indicate that the niches of the two cytotypes differ in optima and/or breadths, but results vary in important details. The whole-range analysis suggests differentiation along the temperature gradient to be most important. However, sympatric comparisons indicate that this climatic shift was not a direct response to competition with diploid ancestors. Moreover, fine-grained analyses demonstrate niche contraction of tetraploids, especially in the sympatric range, that goes undetected with coarse-grained data. Main conclusionsAlthough the niche optima of the two cytotypes differ, separation along ecological gradients was probably less decisive for polyploid establishment than a shift towards facultative apomixis, a particularly effective strategy to avoid minority cytotype exclusion. In addition, our results suggest that coarse-grained analyses overestimate niche breadths of widely distributed taxa. Niche comparison analyses should hence be conducted at environmental data resolutions appropriate for the organism and question under study."],["dc.identifier.doi","10.1111/jbi.12663"],["dc.identifier.isi","000373154000007"],["dc.identifier.pmid","27482126"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13234"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41038"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1365-2699"],["dc.relation.issn","0305-0270"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","A matter of scale: apparent niche differentiation of diploid and tetraploid plants may depend on extent and grain of analysis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1313"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","New Phytologist"],["dc.bibliographiccitation.lastpage","1323"],["dc.bibliographiccitation.volume","209"],["dc.contributor.author","Dellinger, Agnes S."],["dc.contributor.author","Essl, Franz"],["dc.contributor.author","Hojsgaard, Diego H."],["dc.contributor.author","Kirchheimer, Bernhard"],["dc.contributor.author","Klatt, Simone"],["dc.contributor.author","Dawson, Wayne"],["dc.contributor.author","Pergl, Jan"],["dc.contributor.author","Pysek, Petr"],["dc.contributor.author","van Kleunen, Mark"],["dc.contributor.author","Weber, Ewald"],["dc.contributor.author","Winter, Marten"],["dc.contributor.author","Hoerandl, Elvira"],["dc.contributor.author","Dullinger, Stefan"],["dc.date.accessioned","2018-11-07T10:18:25Z"],["dc.date.available","2018-11-07T10:18:25Z"],["dc.date.issued","2016"],["dc.description.abstract","Biological invasions can be associated with shifts of the species' climatic niches but the incidence of such shifts is under debate. The reproductive system might be a key factor controlling such shifts because it influences a species' evolutionary flexibility. However, the link between reproductive systems and niche dynamics in plant invasions has been little studied so far. We compiled global occurrence data sets of 13 congeneric sexual and apomictic species pairs, and used principal components analysis (PCA) and kernel smoothers to compare changes in climatic niche optima, breadths and unfilling/expansion between native and alien ranges. Niche change metrics were compared between sexual and apomictic species. All 26 species showed changes in niche optima and/or breadth and 14 species significantly expanded their climatic niches. However, we found no effect of the reproductive system on niche dynamics. Instead, species with narrower native niches showed higher rates of niche expansion in the alien ranges. Our results suggest that niche shifts are frequent in plant invasions but evolutionary potential may not be of major importance for such shifts. Niche dynamics rather appear to be driven by changes of the realized niche without adaptive change of the fundamental climatic niche."],["dc.identifier.doi","10.1111/nph.13694"],["dc.identifier.isi","000373378000041"],["dc.identifier.pmid","26508329"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13411"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41438"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B12: Reproductive strategies of weedy flowering plants in tropical rainforest transformation systems"],["dc.relation.issn","1469-8137"],["dc.relation.issn","0028-646X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Niche dynamics of alien species do not differ among sexual and apomictic flowering plants"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","392"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Ecology Letters"],["dc.bibliographiccitation.lastpage","401"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Kirchheimer, Bernhard"],["dc.contributor.author","Wessely, Johannes"],["dc.contributor.author","Gattringer, Andreas"],["dc.contributor.author","Hülber, Karl"],["dc.contributor.author","Moser, Dietmar"],["dc.contributor.author","Schinkel, Christoph C. F."],["dc.contributor.author","Appelhans, Marc"],["dc.contributor.author","Klatt, Simone"],["dc.contributor.author","Caccianiga, Marco"],["dc.contributor.author","Dellinger, Agnes"],["dc.contributor.author","Guisan, Antoine"],["dc.contributor.author","Kuttner, Michael"],["dc.contributor.author","Lenoir, Jonathan"],["dc.contributor.author","Maiorano, Luigi"],["dc.contributor.author","Nieto-Lugilde, Diego"],["dc.contributor.author","Plutzar, Christoph"],["dc.contributor.author","Svenning, Jens-Christian"],["dc.contributor.author","Willner, Wolfgang"],["dc.contributor.author","Hörandl, Elvira"],["dc.contributor.author","Dullinger, Stefan"],["dc.date.accessioned","2019-07-09T11:45:27Z"],["dc.date.available","2019-07-09T11:45:27Z"],["dc.date.issued","2018"],["dc.description.abstract","Asexual taxa often have larger ranges than their sexual progenitors, particularly in areas affected by Pleistocene glaciations. The reasons given for this 'geographical parthenogenesis' are contentious, with expansion of the ecological niche or colonisation advantages of uniparental reproduction assumed most important in case of plants. Here, we parameterized a spread model for the alpine buttercup Ranunculus kuepferi and reconstructed the joint Holocene range expansion of its sexual and apomictic cytotype across the European Alps under different simulation settings. We found that, rather than niche broadening or a higher migration rate, a shift of the apomict's niche towards colder conditions per se was crucial as it facilitated overcoming of topographical barriers, a factor likely relevant for many alpine apomicts. More generally, our simulations suggest potentially strong interacting effects of niche differentiation and reproductive modes on range formation of related sexual and asexual taxa arising from their differential sensitivity to minority cytotype disadvantage."],["dc.identifier.doi","10.1111/ele.12908"],["dc.identifier.pmid","29349850"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15210"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59232"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/310886/EU//HISTFUNC"],["dc.relation.issn","1461-0248"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","570"],["dc.title","Reconstructing geographical parthenogenesis: effects of niche differentiation and reproductive mode on Holocene range expansion of an alpine plant."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","531"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Heredity"],["dc.bibliographiccitation.lastpage","541"],["dc.bibliographiccitation.volume","116"],["dc.contributor.author","Gramlich, Susanne"],["dc.contributor.author","Sagmeister, P."],["dc.contributor.author","Dullinger, Stefan"],["dc.contributor.author","Hadacek, Franz"],["dc.contributor.author","Hoerandl, Elvira"],["dc.date.accessioned","2018-11-07T10:13:57Z"],["dc.date.available","2018-11-07T10:13:57Z"],["dc.date.issued","2016"],["dc.description.abstract","Little attention has been paid to the evolutionary consequences of the colonizing dynamics and succession processes following glacier retreat. Here we studied hybrid populations that have recently formed and established on glacier forefields of the European Alps owing to secondary contact of a lowland colonizer with a subalpine species. We analyzed the composition of two hybrid populations between Salix purpurea and Salix helvetica with nine microsatellite markers by using Bayesian methods (STRUCTURE and NewHybrids), and simulations. We also studied niche differentiation between the hybrids and the parental species based on indicator values, soil pH and water retention potential measurements. Allelic structure of hybrids confirms the assumed parentage and in situ origin of the crosses on two independent sites within the last decades. Both hybrid populations comprised F-1 and later generation hybrids (F-2 and backcrosses), confirming hybrid fertility. The parental species showed significant differences in niche characteristics for temperature, soil pH, nutrients and moisture. Remarkably, the hybrids exhibited a higher tolerance to cold temperatures, nutrient-poor and acidic soils than either parent. Our results show that willow hybrids originated after glacier retreat and have established persistent populations within a few decades. One factor contributing to hybrid establishment in sympatry with their parents is their ability to occupy more extreme niches than either parental species within a mosaic-like pattern of microhabitats on the forefield. Introgression and/or transgressive segregation may have resulted in novel genotypes that are able to expand the ecological spectrum of either parent."],["dc.identifier.doi","10.1038/hdy.2016.14"],["dc.identifier.isi","000375700100007"],["dc.identifier.pmid","26980342"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13482"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40526"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Nature Publishing Group"],["dc.relation.issn","1365-2540"],["dc.relation.issn","0018-067X"],["dc.rights","CC BY-NC-SA 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc-sa/4.0"],["dc.title","Evolution in situ: hybrid origin and establishment of willows (Salix L.) on alpine glacier forefields"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1093"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Plant Systematics and Evolution"],["dc.bibliographiccitation.lastpage","1108"],["dc.bibliographiccitation.volume","303"],["dc.contributor.author","Schinkel, Christoph C. F."],["dc.contributor.author","Kirchheimer, Bernhard"],["dc.contributor.author","Dullinger, Stefan"],["dc.contributor.author","Geelen, Danny"],["dc.contributor.author","De Storme, Nico"],["dc.contributor.author","Hörandl, Elvira"],["dc.date.accessioned","2019-07-09T11:44:26Z"],["dc.date.available","2019-07-09T11:44:26Z"],["dc.date.issued","2017"],["dc.description.abstract","Polyploidy is one of the most important evolutionary processes in plants. In natural populations, polyploids usually emerge from unreduced gametes which either fuse with reduced ones, resulting in triploid offspring (triploid bridge), or with other unreduced gametes, resulting in tetraploid embryos. The frequencies of these two pathways, and male versus female gamete contributions, however, are largely unexplored. Ranunculus kuepferi occurs with diploid, triploid and autotetraploid cytotypes in the Alps, whereby diploids are mostly sexual, while tetraploids are facultative apomicts. To test for the occurrence of polyploidization events by triploid bridge, we investigated 551 plants of natural populations via flow cytometric seed screening. We assessed ploidy shifts in the embryo to reconstruct female versus male gamete contributions to polyploid embryo and/or endosperm formation. Seed formation via unreduced egg cells (BIII hybrids) occurred in all three cytotypes, while only in one case both gametes were unreduced. Polyploids further formed seeds with reduced, unfertilized egg cells (polyhaploids and aneuploids). Pollen was highly variable in diameter, but only pollen >27 μm was viable, whereby diploids produced higher proportions of well-developed pollen. Pollen size was not informative for the formation of unreduced pollen. These results suggest that a female triploid bridge via unreduced egg cells is the major pathway toward polyploidization in R. kuepferi, maybe as a consequence of constraints of endosperm development. Triploids resulting from unreduced male gametes were not observed, which explains the lack of obligate sexual tetraploid individuals and populations. Unreduced egg cell formation in diploids represents the first step toward apomixis."],["dc.identifier.doi","10.1007/s00606-017-1435-6"],["dc.identifier.pmid","29081576"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14758"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59011"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Pathways to polyploidy: indications of a female triploid bridge in the alpine species Ranunculus kuepferi (Ranunculaceae)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]