2017
Diverse genome organization following 13 independent mesopolyploid events in Brassicaceae contrasts with convergent patterns of gene retention
MANDÁKOVÁ, Terezie; Zheng LI; Michael S. BARKER a Martin LYSÁKZákladní údaje
Originální název
Diverse genome organization following 13 independent mesopolyploid events in Brassicaceae contrasts with convergent patterns of gene retention
Autoři
MANDÁKOVÁ, Terezie; Zheng LI; Michael S. BARKER a Martin LYSÁK
Vydání
Plant Journal, Hoboken (USA), Wiley-Blackwell, 2017, 0960-7412
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: 5.775
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14740/17:00095155
Organizační jednotka
Středoevropský technologický institut
UT WoS
EID Scopus
Klíčová slova anglicky
whole-genome duplication; mesopolyploidy; post-polyploid diploidization; biased gene retention/loss; chromosome number variation; descending dysploidy; chromosomal rearrangement; Brassicaceae
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 1. 3. 2018 14:37, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Hybridization and polyploidy followed by genome-wide diploidization had a significant impact on the diversification of land plants. The ancient At-alpha whole-genome duplication (WGD) preceded the diversification of crucifers (Brassicaceae). Some genera and tribes also experienced younger, mesopolyploid WGDs concealed by subsequent genome diploidization. Here we tested if multiple base chromosome numbers originated due to genome diploidization after independent mesopolyploid WGDs and how diploidization affected post-polyploid gene retention. Sixteen species representing 10 Brassicaceae tribes were analyzed by comparative chromosome painting and/or whole-transcriptome analysis of gene age distributions and phylogenetic analyses of gene duplications. Overall, we found evidence for at least 13 independent mesopolyploidies followed by different degrees of diploidization across the Brassicaceae. New mesotetraploid events were uncovered for the tribes Anastaticeae, Iberideae and Schizopetaleae, and mesohexaploid WGDs for Cochlearieae and Physarieae. In contrast, we found convergent patterns of gene retention and loss among these independent WGDs. Our combined analyses of genomic data for Brassicaceae indicate that extant chromosome number variation in many plant groups, and especially monophyletic taxa with multiple base chromosome numbers, can result from clade-specific genome duplications followed by diploidization. Our observation of parallel gene retention and loss across multiple independent WGDs provides one of the first multi-species tests of the predictability of patterns of post-polyploid genome evolution.
Návaznosti
| GA13-10159S, projekt VaV |
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| LQ1601, projekt VaV |
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