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Different genome sizes of Western and Eastern Ficaria verna lineages shed light on steps of Ficaria evolution

Please always quote using this URN: urn:nbn:de:bvb:20-opus-155061
  • The genus Ficaria is now considered to comprize eight Eurasian species. The most widespread European species is the tetraploid F. verna Huds. The present study provides evidence for the existence of two main lineages of F. verna that differ considerably in their genomic size by about 3 pg. A Western F. verna lineage west of river Rhine displays a mean genome size (2C-value) of 34.2 pg and is almost precisely codistributed with the diploid F. ambigua Boreau (20 pg) north of the Mediterranean. The remaining part of Europe appears to be occupiedThe genus Ficaria is now considered to comprize eight Eurasian species. The most widespread European species is the tetraploid F. verna Huds. The present study provides evidence for the existence of two main lineages of F. verna that differ considerably in their genomic size by about 3 pg. A Western F. verna lineage west of river Rhine displays a mean genome size (2C-value) of 34.2 pg and is almost precisely codistributed with the diploid F. ambigua Boreau (20 pg) north of the Mediterranean. The remaining part of Europe appears to be occupied by the Eastern F. verna lineage solely (mean genome size of 31.3 pg) which codistributes in South-Eastern Europe with the diploid F. calthifolia Rchb. (15 pg). There is little overlap at the boundary of Western and Eastern F. verna lineages with the occurrence of a separate intermediate group in the Netherlands (mean genomic size of 33.2 pg) that appears to result from hybridization of both lineages. On the basis of these observations and further considerations we propose development of F. ambigua and F. calthifolia south of the Alps with subsequent divergence to populate their current Western and Eastern European ranges, respectively. The Western F. verna lineage is proposed to originate from autotetraploidization of F. ambigua (precursor) with moderate genomic downsizing and the Eastern F. verna lineage from auto¬tetraploidization of F. calthifolia (precursor).show moreshow less
Metadaten
Author: Detlev Drenckhahn, Werner Baumgartner, Ben Zonneveld
URN:urn:nbn:de:bvb:20-opus-155061
Document Type:Journal article
Faculties:Medizinische Fakultät / Institut für Anatomie und Zellbiologie
Language:English
Parent Title (German):Forum Geobotanicum
ISSN:1867-9315
Year of Completion:2017
Volume:7
Pagenumber:27-33
Source:Forum Geobotanicum (2016/2017) 7:27-33 DOI 10.3264/FG.2017.1122
URL:http://www.forum-geobotanicum.net/articles/vol_7-2016/drenckhahn-baumgartner-zonnefeld_ficaria_verna/drenckhahn-baumgartner-zonnefeld_ficaria_verna.pdf
DOI:https://doi.org/10.3264/FG.2017.1122
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 58 Pflanzen (Botanik) / 583 Magnoliopsida (Zweikeimblättrige)
GND Keyword:Durchflusscytometrie; Evolution; Genom
Tag:Ficaria ambigua; Ficaria calthifolia; Ficaria verna
Release Date:2017/11/24
Collections:Zeitschriften (Journals) / Forum Geobotanicum / Vol. 7 (2016/2017) / Artikel (articles)
Licence (German):License LogoDeutsches Urheberrecht