Finkeldey, Reiner

[["dc.bibliographiccitation.artnumber","14"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Annals of Forest Science"],["dc.bibliographiccitation.volume","78"],["dc.contributor.author","Semizer-Cuming, Devrim"],["dc.contributor.author","Chybicki, Igor J."],["dc.contributor.author","Finkeldey, Reiner"],["dc.contributor.author","Kjær, Erik D."],["dc.date.accessioned","2021-04-14T08:29:05Z"],["dc.date.accessioned","2022-08-18T12:39:29Z"],["dc.date.available","2021-04-14T08:29:05Z"],["dc.date.available","2022-08-18T12:39:29Z"],["dc.date.issued","2021-02-08"],["dc.date.updated","2022-07-29T12:18:09Z"],["dc.description.abstract","Abstract\r\n \r\n \r\n • Key message\r\n \r\n Ash dieback decreases individual reproductive success of ash trees leaving healthy ash overrepresented as seed and pollen parents for next-generation seedlings. Substantial gene flow over hundreds of meters combined with superior fertility of healthy trees creates optimism for the species’ future in European forests.\r\n \r\n \r\n \r\n • Context\r\n \r\n Hymenoscyphus fraxineus is causing high mortality in European ash (Fraxinus excelsior L.). Due to inheritable resistance to the pathogen, natural selection is likely to act in favour of improved resistance in ash forests following natural regeneration. Still, the frequency of healthy trees is low, and the effect of natural selection will depend on survival, reproductive success and the dispersal capacity of healthy trees under natural conditions.\r\n \r\n \r\n \r\n • Aims\r\n \r\n We aim to test whether healthy trees contribute more to the next generation and to infer their potential for dispersing progenies across the forested landscape.\r\n \r\n \r\n \r\n • Methods\r\n \r\n Using parentage modelling, we estimate mating parameters and dispersal distances of seeds and pollen and compare realised reproductive success of healthy trees to that of unhealthy ones.\r\n \r\n \r\n \r\n • Results\r\n \r\n Healthy trees are overrepresented as the parents of randomly sampled seeds and seedlings in the forest, although that is more pronounced on the female side. We observe long dispersal events and estimate the mean seed and pollen dispersal distances as 67 m and 347 m, respectively.\r\n \r\n \r\n \r\n • Conclusion\r\n \r\n Variation in reproductive success results in selection in favour of lowered susceptibility to ash dieback. The large dispersal capacity decreases the risk of genetic bottlenecks and inbreeding and allows resistant trees to disperse their genes into the neighbourhoods of substantial sizes."],["dc.identifier.citation","Annals of Forest Science. 2021 Feb 08;78(1):14"],["dc.identifier.doi","10.1007/s13595-020-01025-0"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82793"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/112970"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.publisher","Springer Paris"],["dc.relation.eissn","1297-966X"],["dc.relation.issn","1286-4560"],["dc.rights.holder","The Author(s)"],["dc.subject","Ash dieback"],["dc.subject","Enrichment planting"],["dc.subject","Fraxinus excelsior"],["dc.subject","Gene flow"],["dc.subject","Pollen and seed dispersal"],["dc.subject","Reproductive success"],["dc.title","Gene flow and reproductive success in ash (Fraxinus excelsior L.) in the face of ash dieback: restoration and conservation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0186757"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","PloS one"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Semizer-Cuming, Devrim"],["dc.contributor.author","Kjær, Erik Dahl"],["dc.contributor.author","Finkeldey, Reiner"],["dc.date.accessioned","2019-07-09T11:44:38Z"],["dc.date.available","2019-07-09T11:44:38Z"],["dc.date.issued","2017"],["dc.description.abstract","Gene flow dynamics of common ash (Fraxinus excelsior L.) is affected by several human activities in Central Europe, including habitat fragmentation, agroforestry expansion, controlled and uncontrolled transfer of reproductive material, and a recently introduced emerging infectious disease, ash dieback, caused by Hymenoscyphus fraxineus. Habitat fragmentation may alter genetic connectivity and effective population size, leading to loss of genetic diversity and increased inbreeding in ash populations. Gene flow from cultivated trees in landscapes close to their native counterparts may also influence the adaptability of future generations. The devastating effects of ash dieback have already been observed in both natural and managed populations in continental Europe. However, potential long-term effects of genetic bottlenecks depend on gene flow across fragmented landscapes. For this reason, we studied the genetic connectivity of ash trees in an isolated forest patch of a fragmented landscape in Rösenbeck, Germany. We applied two approaches to parentage analysis to estimate gene flow patterns at the study site. We specifically investigated the presence of background pollination at the landscape level and the degree of genetic isolation between native and cultivated trees. Local meteorological data was utilized to understand the effect of wind on the pollen and seed dispersal patterns. Gender information of the adult trees was considered for calculating the dispersal distances. We found that the majority of the studied seeds (55-64%) and seedlings (75-98%) in the forest patch were fathered and mothered by the trees within the same patch. However, we determined a considerable amount of pollen flow (26-45%) from outside of the study site, representing background pollination at the landscape level. Limited pollen flow was observed from neighbouring cultivated trees (2%). Both pollen and seeds were dispersed in all directions in accordance with the local wind directions. Whereas there was no positive correlation between pollen dispersal distance and wind speed, the correlation between seed dispersal distance and wind speed was significant (0.71, p < 0.001), indicating that strong wind favours long-distance dispersal of ash seeds. Finally, we discussed the implications of establishing gene conservation stands and the use of enrichment planting in the face of ash dieback."],["dc.identifier.doi","10.1371/journal.pone.0186757"],["dc.identifier.pmid","29053740"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14846"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59054"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.ddc","570"],["dc.subject.mesh","DNA, Plant"],["dc.subject.mesh","Ecosystem"],["dc.subject.mesh","Fraxinus"],["dc.subject.mesh","Gene Flow"],["dc.subject.mesh","Genes, Plant"],["dc.subject.mesh","Microsatellite Repeats"],["dc.subject.mesh","Pollen"],["dc.subject.mesh","Pollination"],["dc.subject.mesh","Wind"],["dc.title","Gene flow of common ash (Fraxinus excelsior L.) in a fragmented landscape."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]