Population structure and evolutionary history of Central European bellflowers from the Campanula rotundifolia agg.
6 Abstract For understanding extant species diversity, knowledge about processes acting at the population level is crucial. Besides mutations generating de novo genetic variation, three major processes, i.e., polyploidy, hybridization and local adaptation, notably impact population structure and cau...
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Univerzita Karlova, Přírodovědecká fakulta
2023
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ftunivpraha:oai:https://dspace.cuni.cz:20.500.11956/180340 2024-02-11T10:02:41+01:00 Population structure and evolutionary history of Central European bellflowers from the Campanula rotundifolia agg. Populační struktura a evoluční historie středoevropských zvonků z okruhu Campanula rotundifolia agg. Šemberová, Kristýna 2023 application/pdf https://hdl.handle.net/20.500.11956/180340 English en_US eng Univerzita Karlova, Přírodovědecká fakulta http://hdl.handle.net/20.500.11956/180340 258221 rigorózní práce 2023 ftunivpraha https://doi.org/20.500.11956/180340 2024-01-16T00:29:12Z 6 Abstract For understanding extant species diversity, knowledge about processes acting at the population level is crucial. Besides mutations generating de novo genetic variation, three major processes, i.e., polyploidy, hybridization and local adaptation, notably impact population structure and cause evolutionary novelty. Campanula rotundifolia agg. was chosen as a model group for the joint study of these processes because it represents a polyploid complex with three major cytotypes (2x, 4x, 6x), a hitherto unknown ability to hybridize, and a pleiad of putative species that have undergone local adaptation to different conditions. In particular, polyploidization in the complex is acknowledged for generating morphological variation, facilitating long-distance dispersal and shifts in the environmental niche. It also creates a reproductive barrier, thus enabling sympatric speciation. Prerequisites for local adaptation are morphological variation and strong selection pressures leading to adaptive divergence and the rise of many endemic taxa, mainly at the extremes of environmental gradients. On the other hand, for locally adapted or endemic taxa, hybridization with a widespread taxon is one of the main existential threats. Here, I focused on C. rotundifolia agg. populations in Central Europe its hypothetical. 7 Abstrakt zace novinky. Campanula rotundifolia agg.) byl vy studium a . polyploidizace zdroj komplexu a a ved k posunu klady pro i jsou k ke v hybridizace s V C. rotundifolia a alopatrii. a o na a tetraploid , a to jak v mi ami, studovala jsem morfologickou v v by variabilita ve velikosti genomu, v gneice a morfoligii. Vysok variabilita, s m vysok C. rotundifolia m ch ch model ne y rekonstruovanou , jsem porovnala genetickou a morfologickou variabilitu a variabilitu ve velikosti genomu u rostlin z C. rotundifolia s. str. Morfologick podobnost a genetick C. bohemica a C. scheuchzeri z Alp byl C. gelida ve v C. rotundifolia subsp. sudetica. Campanula rotundifolia subsp. sudetica C. rotundifolia s. str. ... Other/Unknown Material Campanula rotundifolia Charles University CU Digital repository |
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Charles University CU Digital repository |
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ftunivpraha |
language |
English |
description |
6 Abstract For understanding extant species diversity, knowledge about processes acting at the population level is crucial. Besides mutations generating de novo genetic variation, three major processes, i.e., polyploidy, hybridization and local adaptation, notably impact population structure and cause evolutionary novelty. Campanula rotundifolia agg. was chosen as a model group for the joint study of these processes because it represents a polyploid complex with three major cytotypes (2x, 4x, 6x), a hitherto unknown ability to hybridize, and a pleiad of putative species that have undergone local adaptation to different conditions. In particular, polyploidization in the complex is acknowledged for generating morphological variation, facilitating long-distance dispersal and shifts in the environmental niche. It also creates a reproductive barrier, thus enabling sympatric speciation. Prerequisites for local adaptation are morphological variation and strong selection pressures leading to adaptive divergence and the rise of many endemic taxa, mainly at the extremes of environmental gradients. On the other hand, for locally adapted or endemic taxa, hybridization with a widespread taxon is one of the main existential threats. Here, I focused on C. rotundifolia agg. populations in Central Europe its hypothetical. 7 Abstrakt zace novinky. Campanula rotundifolia agg.) byl vy studium a . polyploidizace zdroj komplexu a a ved k posunu klady pro i jsou k ke v hybridizace s V C. rotundifolia a alopatrii. a o na a tetraploid , a to jak v mi ami, studovala jsem morfologickou v v by variabilita ve velikosti genomu, v gneice a morfoligii. Vysok variabilita, s m vysok C. rotundifolia m ch ch model ne y rekonstruovanou , jsem porovnala genetickou a morfologickou variabilitu a variabilitu ve velikosti genomu u rostlin z C. rotundifolia s. str. Morfologick podobnost a genetick C. bohemica a C. scheuchzeri z Alp byl C. gelida ve v C. rotundifolia subsp. sudetica. Campanula rotundifolia subsp. sudetica C. rotundifolia s. str. ... |
format |
Other/Unknown Material |
author |
Šemberová, Kristýna |
spellingShingle |
Šemberová, Kristýna Population structure and evolutionary history of Central European bellflowers from the Campanula rotundifolia agg. |
author_facet |
Šemberová, Kristýna |
author_sort |
Šemberová, Kristýna |
title |
Population structure and evolutionary history of Central European bellflowers from the Campanula rotundifolia agg. |
title_short |
Population structure and evolutionary history of Central European bellflowers from the Campanula rotundifolia agg. |
title_full |
Population structure and evolutionary history of Central European bellflowers from the Campanula rotundifolia agg. |
title_fullStr |
Population structure and evolutionary history of Central European bellflowers from the Campanula rotundifolia agg. |
title_full_unstemmed |
Population structure and evolutionary history of Central European bellflowers from the Campanula rotundifolia agg. |
title_sort |
population structure and evolutionary history of central european bellflowers from the campanula rotundifolia agg. |
publisher |
Univerzita Karlova, Přírodovědecká fakulta |
publishDate |
2023 |
url |
https://hdl.handle.net/20.500.11956/180340 |
genre |
Campanula rotundifolia |
genre_facet |
Campanula rotundifolia |
op_relation |
http://hdl.handle.net/20.500.11956/180340 258221 |
op_doi |
https://doi.org/20.500.11956/180340 |
_version_ |
1790598729165701120 |