Unraveling the mesopolyploid history of Australian crucifers (Brassicaceae)
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F09%3A00028533" target="_blank" >RIV/00216224:14310/09:00028533 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Unraveling the mesopolyploid history of Australian crucifers (Brassicaceae)
Popis výsledku v původním jazyce
The lowest chromosome numbers known in Brassicaceae (n=4-6) can be found in endemic Australian cruciferous species closely related to the model species Arabidopsis thaliana. We aimed to reconstruct the modes of chromosome number reduction in the Australian taxa from a tentative Ancestral Crucifer Karyotype (ACK, n=8) by comparative chromosome painting (CCP). In three Australian cruciferous species, Stenopetalum nutans (2n=8), Arabidella eremigena (2n=10) and Ballantinia antipoda (2n=12), all 24 genomicblocks of the ACK were unexpectedly found in duplicates. These data suggest that all three species experienced a relatively recent whole-genome duplication followed by massive karyotype reshuffling and chromosome fusions. The unique associations of ancestral genomic blocks shared by the ACK and the Australian crucifers suggest that the reduced crucifer karyotypes (n=4-6) descended from the ACK (n=8) via a polyploid ancestor with yet unknown chromosome number.
Název v anglickém jazyce
Unraveling the mesopolyploid history of Australian crucifers (Brassicaceae)
Popis výsledku anglicky
The lowest chromosome numbers known in Brassicaceae (n=4-6) can be found in endemic Australian cruciferous species closely related to the model species Arabidopsis thaliana. We aimed to reconstruct the modes of chromosome number reduction in the Australian taxa from a tentative Ancestral Crucifer Karyotype (ACK, n=8) by comparative chromosome painting (CCP). In three Australian cruciferous species, Stenopetalum nutans (2n=8), Arabidella eremigena (2n=10) and Ballantinia antipoda (2n=12), all 24 genomicblocks of the ACK were unexpectedly found in duplicates. These data suggest that all three species experienced a relatively recent whole-genome duplication followed by massive karyotype reshuffling and chromosome fusions. The unique associations of ancestral genomic blocks shared by the ACK and the Australian crucifers suggest that the reduced crucifer karyotypes (n=4-6) descended from the ACK (n=8) via a polyploid ancestor with yet unknown chromosome number.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
EB - Genetika a molekulární biologie
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/IAA601630902" target="_blank" >IAA601630902: Evoluce chromosomů brukvovitých (Brassicaceae) analyzována pomocí komparativního chromosomálního paintingu</a><br>
Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2009
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů