Heteroploid reticulate evolution and taxonomic status of an endemic species with bicentric geographical distribution
Reticulate evolution is considered to be among the main mechanisms of plant evolution, often leading to the establishment of new species. However, complex evolutionary scenarios result in a challenging definition of evolutionary and taxonomic units. In this study, we aimed to examine the evolutionar...
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2017
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ftleibnizopen:oai:oai.leibnizopen.de:5kmcqIgBdbrxVwz6fU-V 2023-07-02T03:31:53+02:00 Heteroploid reticulate evolution and taxonomic status of an endemic species with bicentric geographical distribution Nierbauer, Kai Uwe Zizka, Georg Paule, Juraj 2017 https://repository.publisso.de/resource/frl:6406791 https://doi.org/10.1093/aobpla/plx002 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5463600/ https://academic.oup.com/aobpla/article/9/1/plx002/2953232?searchresult=1 eng eng http:/creativecommons.org/licenses/by/4.0/ AoB PLANTS, 9(1):plx002 polyploidy Campanula sect. Heterophylla AFLP rpl32-trnL ITS flow cytometry hybridization cpDNA 2017 ftleibnizopen https://doi.org/10.1093/aobpla/plx002 2023-06-11T23:13:44Z Reticulate evolution is considered to be among the main mechanisms of plant evolution, often leading to the establishment of new species. However, complex evolutionary scenarios result in a challenging definition of evolutionary and taxonomic units. In this study, we aimed to examine the evolutionary origin and revise the species status of Campanula baumgartenii, a rare endemic species from the polyploid complex Campanula section Heterophylla. Morphometry, flow cytometric ploidy estimation, amplified fragment length polymorphisms (AFLPs), as well as chloroplast and nuclear DNA sequence markers were used to assess the morphological and genetic differentiation among C. baumgartenii, Campanula rotundifolia and other closely related taxa. Tetra- and hexaploid C. baumgartenii is morphologically and molecularly (AFLP) differentiated from sympatric C. rotundifolia. Contrasting signals from nuclear (ITS) and chloroplast (trnL-rpl32) markers suggest a hybrid origin of C. baumgartenii with C. rotundifolia and a taxon related to the alpine Campanula scheuchzeri as ancestors. Additionally, hexaploid C. baumgartenii currently hybridizes with co-occurring tetraploid C. rotundifolia resulting in pentaploid hybrids, for which C. baumgartenii serves as both seed and pollen donor. Based on the molecular and morphological differentiation, we propose to keep C. baumgartenii as a separate species. This study exemplifies that detailed population genetic studies can provide a solid basis for taxonomic delimitation within Campanula section Heterophylla as well as for sound identification of conservation targets. Other/Unknown Material Campanula rotundifolia LeibnizOpen (The Leibniz Association) AoB Plants plx002 |
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Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
polyploidy Campanula sect. Heterophylla AFLP rpl32-trnL ITS flow cytometry hybridization cpDNA |
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polyploidy Campanula sect. Heterophylla AFLP rpl32-trnL ITS flow cytometry hybridization cpDNA Nierbauer, Kai Uwe Zizka, Georg Paule, Juraj Heteroploid reticulate evolution and taxonomic status of an endemic species with bicentric geographical distribution |
topic_facet |
polyploidy Campanula sect. Heterophylla AFLP rpl32-trnL ITS flow cytometry hybridization cpDNA |
description |
Reticulate evolution is considered to be among the main mechanisms of plant evolution, often leading to the establishment of new species. However, complex evolutionary scenarios result in a challenging definition of evolutionary and taxonomic units. In this study, we aimed to examine the evolutionary origin and revise the species status of Campanula baumgartenii, a rare endemic species from the polyploid complex Campanula section Heterophylla. Morphometry, flow cytometric ploidy estimation, amplified fragment length polymorphisms (AFLPs), as well as chloroplast and nuclear DNA sequence markers were used to assess the morphological and genetic differentiation among C. baumgartenii, Campanula rotundifolia and other closely related taxa. Tetra- and hexaploid C. baumgartenii is morphologically and molecularly (AFLP) differentiated from sympatric C. rotundifolia. Contrasting signals from nuclear (ITS) and chloroplast (trnL-rpl32) markers suggest a hybrid origin of C. baumgartenii with C. rotundifolia and a taxon related to the alpine Campanula scheuchzeri as ancestors. Additionally, hexaploid C. baumgartenii currently hybridizes with co-occurring tetraploid C. rotundifolia resulting in pentaploid hybrids, for which C. baumgartenii serves as both seed and pollen donor. Based on the molecular and morphological differentiation, we propose to keep C. baumgartenii as a separate species. This study exemplifies that detailed population genetic studies can provide a solid basis for taxonomic delimitation within Campanula section Heterophylla as well as for sound identification of conservation targets. |
author |
Nierbauer, Kai Uwe Zizka, Georg Paule, Juraj |
author_facet |
Nierbauer, Kai Uwe Zizka, Georg Paule, Juraj |
author_sort |
Nierbauer, Kai Uwe |
title |
Heteroploid reticulate evolution and taxonomic status of an endemic species with bicentric geographical distribution |
title_short |
Heteroploid reticulate evolution and taxonomic status of an endemic species with bicentric geographical distribution |
title_full |
Heteroploid reticulate evolution and taxonomic status of an endemic species with bicentric geographical distribution |
title_fullStr |
Heteroploid reticulate evolution and taxonomic status of an endemic species with bicentric geographical distribution |
title_full_unstemmed |
Heteroploid reticulate evolution and taxonomic status of an endemic species with bicentric geographical distribution |
title_sort |
heteroploid reticulate evolution and taxonomic status of an endemic species with bicentric geographical distribution |
publishDate |
2017 |
url |
https://repository.publisso.de/resource/frl:6406791 https://doi.org/10.1093/aobpla/plx002 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5463600/ https://academic.oup.com/aobpla/article/9/1/plx002/2953232?searchresult=1 |
genre |
Campanula rotundifolia |
genre_facet |
Campanula rotundifolia |
op_source |
AoB PLANTS, 9(1):plx002 |
op_rights |
http:/creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/aobpla/plx002 |
container_title |
AoB Plants |
container_start_page |
plx002 |
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1770271325256941568 |