ZOZOMOVÁ-LIHOVÁ, Judita, Karol KRAK, Terezie MANDÁKOVÁ, Kentaro K. SHIMIZU, Stanislav ŠPANIEL, Petr VÍT and Martin LYSÁK. Multiple hybridization events in Cardamine (Brassicaceae) during the last 150 years: revisiting a textbook example of neoallopolyploidy. Annals of Botany. Oxford: Oxford University Press, vol. 113, No 5, p. 817-830. ISSN 0305-7364. doi:10.1093/aob/mcu012. 2014.
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Basic information
Original name Multiple hybridization events in Cardamine (Brassicaceae) during the last 150 years: revisiting a textbook example of neoallopolyploidy
Authors ZOZOMOVÁ-LIHOVÁ, Judita (703 Slovakia), Karol KRAK (203 Czech Republic), Terezie MANDÁKOVÁ (203 Czech Republic, belonging to the institution), Kentaro K. SHIMIZU (756 Switzerland), Stanislav ŠPANIEL (203 Czech Republic), Petr VÍT (203 Czech Republic) and Martin LYSÁK (203 Czech Republic, guarantor, belonging to the institution).
Edition Annals of Botany, Oxford, Oxford University Press, 2014, 0305-7364.
Other information
Original language English
Type of outcome Article in a journal
Field of Study Genetics and molecular biology
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 3.654
RIV identification code RIV/00216224:14740/14:00074136
Organization unit Central European Institute of Technology
Doi http://dx.doi.org/10.1093/aob/mcu012
UT WoS 000333249000007
Keywords in English MULTILOCUS GENOTYPE DATA; POPULATION-STRUCTURE; TRAGOPOGON ASTERACEAE; ALLOPOLYPLOID ORIGIN; RECURRENT FORMATION; AMARA BRASSICACEAE; MOLECULAR EVIDENCE; HYBRID SPECIATION; GENETIC DIVERSITY; GENOME EVOLUTION
Tags kontrola MP, MP, rivok
Tags International impact, Reviewed
Changed by Changed by: Martina Prášilová, učo 342282. Changed: 26/11/2014 11:43.
Abstract
Recently formed allopolyploid species represent excellent subjects for exploring early stages of polyploid evolution. The hexaploid Cardamine schulzii was regarded as one of the few nascent allopolyploid species formed within the past 150 years that presumably arose by autopolyploidization of a triploid hybrid, C. insueta; however, the most recent investigations have shown that it is a trigenomic hybrid. The aims of this study were to explore the efficiency of progenitor-specific microsatellite markers in detecting the hybrid origins and genome composition of these two allopolyploids, to estimate the frequency of polyploid formation events, and to outline their evolutionary potential for long-term persistence and speciation. Flow-cytometric ploidy-level screening and genotyping by progenitor-specific microsatellite markers (20 microsatellite loci) were carried out on samples focused on hybridizing populations at Urnerboden, Switzerland, but also including comparative material of the parental species from other sites in the Alps and more distant areas. It was confirmed that hybridization between the diploids C. amara and C. rivularis auct. gave rise to triploid C. insueta, and it is inferred that this has occurred repeatedly. Evidence is provided that C. schulzii comprises three parental genomes and supports its origin from hybridization events between C. insueta and the locally co-occurring hypotetraploid C. pratensis, leading to two cytotypes of C. schulzii: hypopentaploid and hypohexaploid. Each cytotype of C. schulzii is genetically uniform, suggesting their single origins. Persistence of C. schulzii has presumably been achieved only by perennial growth and clonal reproduction. This contrasts with C. insueta, in which multiple origins and occasional sexual reproduction have generated sufficient genetic variation for long-term survival and evolutionary success. This study illustrates a complex case of recurrent hybridization and polyploidization events, and highlights the role of triploids that promoted the origin of trigenomic hybrids.
Links
EE2.3.20.0189, research and development projectName: Rozvoj výzkumné excelence v oblasti evoluční cytogenomiky, epigenetiky a buněčné signalizace
EE2.3.30.0037, research and development projectName: Zaměstnáním nejlepších mladých vědců k rozvoji mezinárodní spolupráce
GAP501/10/1014, research and development projectName: Evoluce genomu alopolyploidních řeřišnic (Cardamine) rozdílného fylogenetického stáří
Investor: Czech Science Foundation
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