MANDÁKOVÁ, Terezie, Xinyi GUO a Martin LYSÁK. Phylo-cytogenomic Analysis of Genome Duplications in Crucifers. In 1st Annual CEITEC Postdoc Retreat. 2019.
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Základní údaje
Originální název Phylo-cytogenomic Analysis of Genome Duplications in Crucifers
Autoři MANDÁKOVÁ, Terezie (203 Česká republika, domácí), Xinyi GUO (156 Čína, domácí) a Martin LYSÁK (203 Česká republika, garant, domácí).
Vydání 1st Annual CEITEC Postdoc Retreat, 2019.
Další údaje
Originální jazyk angličtina
Typ výsledku Konferenční abstrakt
Obor 10611 Plant sciences, botany
Stát vydavatele Česká republika
Utajení není předmětem státního či obchodního tajemství
Kód RIV RIV/00216224:14740/19:00113365
Organizační jednotka Středoevropský technologický institut
Klíčová slova anglicky Phylo-cytogenomic Analysis; Crucifers
Štítky rivok
Změnil Změnila: Mgr. Pavla Foltynová, Ph.D., učo 106624. Změněno: 26. 3. 2020 21:30.
Anotace
Many wild and cultivated plants arise through genome duplication or polyploidization, which is an important speciation mechanism. The knowledge of how and when these processes occur can inform us both how current plant diversity was shaped by evolution and how we could improve the crops. Based on previous findings in our group (RG Plant Cytogenomics, CEITEC), my current research interests focus on combining bioinformatics and cytogenetics to study the genome evolution in cruciferous species (Brassicaceae), especially in polyploids. Recently, I’m investigating Biscutelleae species, one of the earliest diverged tribe in the Brassicaceae, which has five recognized genera. Except for the diploid Megadenia (n=6), the four remaining genera were found to have a tetraploid origin. Heldreichia has experienced recent (less than 3.4 Mya) autopolyploidization from an ancestral n=5 genome. Biscutella (n=6, 8, 9), Lunaria (n=14, 15) and Ricotia (n=13, 14) originated through independent inter-tribal hybridizations between two genomes with n=7 and n=8 chromosomes that diverged around the split of major Brassicaceae lineages (from 20 to 25 Mya). The allopolyploid events were followed by genus- and species-specific genome rearrangements and reduction of chromosome numbers. Meanwhile, we found evidence of ancient gene flows between Biscutelleae and other Brassicaceae lineages. Collectively, these findings suggested that the rapid divergence of Brassicaceae was accompanied by frequent hybridizations between its early diverging members.
Návaznosti
LQ1601, projekt VaVNázev: CEITEC 2020 (Akronym: CEITEC2020)
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020
VytisknoutZobrazeno: 30. 4. 2024 15:17