2021
Genome structure and apomixis in Phoenicaulis (Brassicaceae; Boechereae)
MALÍK MANDÁKOVÁ, Terezie, K. ASHBY, B.J. PRICE, M.D. WINDHAM, J.G. CARMAN et. al.Základní údaje
Originální název
Genome structure and apomixis in Phoenicaulis (Brassicaceae; Boechereae)
Autoři
MALÍK MANDÁKOVÁ, Terezie (203 Česká republika, domácí), K. ASHBY, B.J. PRICE, M.D. WINDHAM, J.G. CARMAN a Martin LYSÁK (203 Česká republika, garant, domácí)
Vydání
Journal of Systematics and Evolution, Hoboken, Wiley, 2021, 1674-4918
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10611 Plant sciences, botany
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.544
Kód RIV
RIV/00216224:14740/21:00121303
Organizační jednotka
Středoevropský technologický institut
UT WoS
000505629500001
Klíčová slova anglicky
apomixis; apospory; autopolyploidy; Boechera; Brassicaceae; karyotype evolution
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 15. 3. 2022 18:08, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Apomixis in crucifer (Brassicaceae) species is rare, reported in just four genera (Boechera, Draba, Erysimum, and Parrya), and one intergeneric hybrid (Raphanobrassica). It is well studied only in Boechera, where it is widespread among 100+ recognized species. However, its occurrence in related genera of the tribe Boechereae has not been documented previously. Here we analyzed genome evolution, mode of reproduction, and fertility of the monospecific Boechereae genus Phoenicaulis (P. cheiranthoides), endemic to the northwestern United States. We discovered that the species encompasses diploid (2n = 2x = 14), triploid (2n = 3x = 21), and tetraploid (2n = 4x = 28) populations. Comparative chromosome painting analyses revealed that the three karyotypes are essentially structurally identical, differing only in the presence of a largely heterochromatic chromosome (Het) in the triploid and tetraploid cytotypes. The genome structure of Phoenicaulis appeared identical to that of Boechera species previously analyzed, suggesting genomic stasis despite the morphological and molecular divergence of the two genera. This genome colinearity extended to the presence and structure of the Het chromosomes, which are closely associated with apomictic reproduction in Boechera. Interestingly, all three cytotypes of Phoenicaulis proved to be apomictic, regardless of the presence or absence of a Het chromosome, and sexual populations have yet to be identified.
Návaznosti
LQ1601, projekt VaV |
| ||
LTAUSA17002, projekt VaV |
|