2021
The chromosome-level genome sequence and karyotypic evolution of Megadenia pygmaea (Brassicaceae)
YANG, W.J., L. ZHANG, Terezie MANDÁKOVÁ, L. HUANG, T. LI et. al.Základní údaje
Originální název
The chromosome-level genome sequence and karyotypic evolution of Megadenia pygmaea (Brassicaceae)
Autoři
YANG, W.J., L. ZHANG, Terezie MANDÁKOVÁ (203 Česká republika, domácí), L. HUANG, T. LI, J.B. JIANG, Y.Z. YANG, Martin LYSÁK (203 Česká republika, garant, domácí), J.Q. LIU a Q.J. HU
Vydání
Molecular Ecology Resources, HOBOKEN, WILEY, 2021, 1755-098X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 8.678
Kód RIV
RIV/00216224:14740/21:00121242
Organizační jednotka
Středoevropský technologický institut
UT WoS
000594666000001
Klíčová slova anglicky
Brassicaceae; descending dysploidy; genome assembly; karyotype and chromosome evolution; Qinghai-Tibet Plateau
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 18. 1. 2022 13:57, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Karyotypic changes in chromosome number and structure are drivers in the divergent evolution of diverse plant species and lineages. This study aimed to reveal the origins of the unique karyotype (2n = 12) and phylogenetic relationships of the genus Megadenia (Brassicaceae). A high-quality chromosome-scale genome was assembled for Megadenia pygmaea using Nanopore long reads and high-throughput chromosome conformation capture (Hi-C). The assembled genome is 215.2 Mb and is anchored on six pseudochromosomes. We annotated a total of 25,607 high-confidence protein-coding genes and corroborated the phylogenetic affinity of Megadenia with the Brassicaceae expanded lineage II, containing numerous agricultural crops. We dated the divergence of Megadenia from its closest relatives to 27.04 (19.11-36.60) million years ago. A reconstruction of the chromosomal composition of the species was performed based on the de novo assembled genome and comparative chromosome painting analysis. The karyotype structure of M. pygmaea is very similar to the previously inferred proto-Calepineae karyotype (PCK; n = 7) of the lineage II. However, an end-to-end translocation between two ancestral chromosomes reduced the chromosome number from n = 7 to n = 6 in Megadenia. Our reference genome provides fundamental information for karyotypic evolution and evolutionary study of this genus.
Návaznosti
LQ1601, projekt VaV |
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