2014
Multiple hybridization events in Cardamine (Brassicaceae) during the last 150 years: revisiting a textbook example of neoallopolyploidy
ZOZOMOVÁ-LIHOVÁ, Judita, Karol KRAK, Terezie MANDÁKOVÁ, Kentaro K. SHIMIZU, Stanislav ŠPANIEL et. al.Základní údaje
Originální název
Multiple hybridization events in Cardamine (Brassicaceae) during the last 150 years: revisiting a textbook example of neoallopolyploidy
Autoři
ZOZOMOVÁ-LIHOVÁ, Judita (703 Slovensko), Karol KRAK (203 Česká republika), Terezie MANDÁKOVÁ (203 Česká republika, domácí), Kentaro K. SHIMIZU (756 Švýcarsko), Stanislav ŠPANIEL (203 Česká republika), Petr VÍT (203 Česká republika) a Martin LYSÁK (203 Česká republika, garant, domácí)
Vydání
Annals of Botany, Oxford, Oxford University Press, 2014, 0305-7364
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
Genetika a molekulární biologie
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.654
Kód RIV
RIV/00216224:14740/14:00074136
Organizační jednotka
Středoevropský technologický institut
UT WoS
000333249000007
Klíčová slova anglicky
MULTILOCUS GENOTYPE DATA; POPULATION-STRUCTURE; TRAGOPOGON ASTERACEAE; ALLOPOLYPLOID ORIGIN; RECURRENT FORMATION; AMARA BRASSICACEAE; MOLECULAR EVIDENCE; HYBRID SPECIATION; GENETIC DIVERSITY; GENOME EVOLUTION
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 26. 11. 2014 11:43, Martina Prášilová
Anotace
V originále
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.
Návaznosti
EE2.3.20.0189, projekt VaV |
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EE2.3.30.0037, projekt VaV |
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GAP501/10/1014, projekt VaV |
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