2016
Repeated Whole-Genome Duplication, Karyotype Reshuffling, and Biased Retention of Stress-Responding Genes in Buckler Mustard
GEISER, Celine, Terezie MANDÁKOVÁ, Nils ARRIGO, Martin LYSÁK, Christian PARISOD et. al.Základní údaje
Originální název
Repeated Whole-Genome Duplication, Karyotype Reshuffling, and Biased Retention of Stress-Responding Genes in Buckler Mustard
Autoři
GEISER, Celine (756 Švýcarsko), Terezie MANDÁKOVÁ (203 Česká republika, domácí), Nils ARRIGO (756 Švýcarsko), Martin LYSÁK (203 Česká republika, garant, domácí) a Christian PARISOD (756 Švýcarsko)
Vydání
Plant Cell, ROCKVILLE, AMER SOC PLANT BIOLOGISTS, 2016, 1040-4651
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 8.726
Kód RIV
RIV/00216224:14740/16:00088730
Organizační jednotka
Středoevropský technologický institut
UT WoS
000369814300006
Klíčová slova anglicky
BISCUTELLA-LAEVIGATA BRASSICACEAE; PHYLOGENETIC ANALYSIS; AGE DISTRIBUTIONS; FLOWERING PLANTS; EVOLUTION; CONSEQUENCES; POLYPLOIDS; ARABIDOPSIS; PALEOPOLYPLOIDY; DIPLOIDIZATION
Štítky
Změněno: 1. 3. 2017 14:18, Mgr. Eva Špillingová
Anotace
V originále
Whole-genome duplication (WGD) is usually followed by gene loss and karyotype repatterning. Despite evidence of new adaptive traits associated with WGD, the underpinnings and evolutionary significance of such genome fractionation remain elusive. Here, we use Buckler mustard (Biscutella laevigata) to infer processes that have driven the retention of duplicated genes after recurrent WGDs. In addition to the beta- and alpha-WGD events shared by all Brassicaceae, cytogenetic and transcriptome analyses revealed two younger WGD events that occurred at times of environmental changes in the clade of Buckler mustard (Biscutelleae): a mesopolyploidy event from the late Miocene that was followed by considerable karyotype reshuffling and chromosome number reduction and a neopolyploidy event during the Pleistocene. Although a considerable number of the older duplicates presented signatures of retention under positive selection, the majority of retained duplicates arising from the younger mesopolyploidy WGD event matched predictions of the gene balance hypothesis and showed evidence of strong purifying selection as well as enrichment in gene categories responding to abiotic stressors. Retention of large stretches of chromosomes for both genomic copies supported the hypothesis that cycles of WGD and biased fractionation shaped the genome of this stress-tolerant polypolyloid, promoting the adaptive recruitment of stress-responding genes in the face of environmental challenges.
Návaznosti
EE2.3.20.0189, projekt VaV |
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EE2.3.30.0037, projekt VaV |
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GA13-10159S, projekt VaV |
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