Interploidy Introgression Shaped Adaptation during the Origin and Domestication History of Brassica napus DOI Creative Commons
Tianpeng Wang, Aalt D. J. van Dijk,

Johan Bucher

et al.

Molecular Biology and Evolution, Journal Year: 2023, Volume and Issue: 40(9)

Published: Sept. 1, 2023

Polyploidy is recurrent across the tree of life and known as an evolutionary driving force in plant diversification crop domestication. How polyploid plants adapt to various habitats has been a fundamental question that remained largely unanswered. Brassica napus major cultivated worldwide, resulting from allopolyploidy between unknown accessions diploid B. rapa oleracea. Here, we used whole-genome resequencing data representing majority morphotypes ecotypes species rapa, oleracea, investigate role polyploidy during To do so, first reconstructed phylogenetic history napus, which supported hypothesis emergence derived hybridization European turnip wild These analyses also showed swede Siberian kale (used vegetable fodder) were domesticated before rapeseed (oil crop). We next observed frequent interploidy introgressions sympatric diploids prominent throughout domestication napus. Introgressed genomic regions shown increase overall genetic diversity tend be localized high recombination. detected numerous candidate adaptive introgressed found evidence some genes these contributed phenotypic adaptation different morphotypes. Overall, our results shed light on origin demonstrate introgression important mechanism fuels rapid species.

Language: Английский

The effects of hybridization and genome doubling in plant evolution via allopolyploidy DOI

Tian Qiu,

Zhiyuan Liu, Liu B

et al.

Molecular Biology Reports, Journal Year: 2020, Volume and Issue: 47(7), P. 5549 - 5558

Published: June 23, 2020

Language: Английский

Citations

42
Genes derived from ancient polyploidy have higher genetic diversity and are associated with domestication inBrassica rapa DOI Creative Commons

Xinshuai Qi,

Hong An,

Tara E. Hall

et al.

New Phytologist, Journal Year: 2021, Volume and Issue: 230(1), P. 372 - 386

Published: Jan. 16, 2021

Summary Many crops are polyploid or have a ancestry. Recent phylogenetic analyses found that polyploidy often preceded the domestication of crop plants. One explanation for this observation is increased genetic diversity following may been important during strong artificial selection occurs domestication. In order to test connection between and polyploidy, we identified examined candidate genes associated with diverse varieties Brassica rapa . Like all ‘diploid’ flowering plants, B. has diploidized paleopolyploid genome experienced many rounds whole duplication (WGD). We analyzed transcriptome data more than 100 cultivated accessions. Using combination approaches, > 3000 four major varieties. Consistent our expectation, were significantly enriched derived from Brassiceae mesohexaploidy. also observed paleologs non‐paleologs. Our find evidence ancient played key role in provide support its importance success modern agriculture.

Language: Английский

Citations

38
Transcriptional activity of transposable elements along an elevational gradient in Arabidopsis arenosa DOI Creative Commons
Guillaume Wos, Rimjhim Roy Choudhury, Filip Kolář

et al.

Mobile DNA, Journal Year: 2021, Volume and Issue: 12(1)

Published: Feb. 27, 2021

Abstract Background Plant genomes can respond rapidly to environmental changes and transposable elements (TEs) arise as important drivers contributing genome dynamics. Although some were reported be induced by various abiotic or biotic factors, there is a lack of general understanding on how environment influences the activity diversity TEs. Here, we combined common garden experiment with short-read sequencing investigate genomic abundance expression 2245 consensus TE sequences (containing retrotransposons DNA transposons) in an alpine Arabidopsis arenosa . To disentangle trends from local differentiation, leveraged four foothill-alpine population pairs different mountain regions. Seeds each eight populations raised under treatments that differed temperature irradiance, two factors varying elevation. RNA-seq analysis was performed leaves young plants test for effect elevation subsequently irradiance sequences. Results Genomic varied greatly between regions line neutral divergence among regions, representing distinct genetic lineages A. Accounting intraspecific variation abundance, found consistent transcriptomic response across suggesting parallelism expression. In particular retrotransposon LTR Copia (e.g. Ivana Ale clades) Gypsy Athila CRM but also non-LTR LINE transposon TIR MuDR consistently origin. responding specifically belonged same classes well additional clades containing potentially stress-responsive Sire Tar, Reina). Conclusions Our study demonstrated harbours considerable whose varies its native range. Some may contain transcriptionally active natural gradient. This further contribute ultimately provide new regulatory mechanisms face challenges.

Language: Английский

Citations

38
Crossover patterning in plants DOI Creative Commons
Andrew Lloyd

Plant Reproduction, Journal Year: 2022, Volume and Issue: 36(1), P. 55 - 72

Published: July 14, 2022

Abstract Key message Chromatin state, and dynamic loading of pro-crossover protein HEI10 at recombination intermediates shape meiotic chromosome patterning in plants. Meiosis is the basis sexual reproduction, its basic progression conserved across eukaryote kingdoms. A key feature meiosis formation crossovers which result reciprocal exchange segments maternal paternal chromosomes. This generates chromosomes with new combinations alleles, increasing efficiency both natural artificial selection. Crossovers also form a physical link between homologous metaphase I critical for accurate segregation fertility. The along length highly regulated process, our current understanding regulation forms focus this review. At global scale, crossover plants largely governed by classically observed phenomena interference, homeostasis obligatory regulate total number their relative spacing. molecular actors behind these have long remained obscure, but recent studies implicate ZYP1 as players coordination. In addition to broad forces, wealth has highlighted how genomic epigenomic features chromosomal local scales, revealing that are primarily located open chromatin associated gene promoters terminators low nucleosome occupancy.

Language: Английский

Citations

25
Interploidy Introgression Shaped Adaptation during the Origin and Domestication History of Brassica napus DOI Creative Commons
Tianpeng Wang, Aalt D. J. van Dijk,

Johan Bucher

et al.

Molecular Biology and Evolution, Journal Year: 2023, Volume and Issue: 40(9)

Published: Sept. 1, 2023

Polyploidy is recurrent across the tree of life and known as an evolutionary driving force in plant diversification crop domestication. How polyploid plants adapt to various habitats has been a fundamental question that remained largely unanswered. Brassica napus major cultivated worldwide, resulting from allopolyploidy between unknown accessions diploid B. rapa oleracea. Here, we used whole-genome resequencing data representing majority morphotypes ecotypes species rapa, oleracea, investigate role polyploidy during To do so, first reconstructed phylogenetic history napus, which supported hypothesis emergence derived hybridization European turnip wild These analyses also showed swede Siberian kale (used vegetable fodder) were domesticated before rapeseed (oil crop). We next observed frequent interploidy introgressions sympatric diploids prominent throughout domestication napus. Introgressed genomic regions shown increase overall genetic diversity tend be localized high recombination. detected numerous candidate adaptive introgressed found evidence some genes these contributed phenotypic adaptation different morphotypes. Overall, our results shed light on origin demonstrate introgression important mechanism fuels rapid species.

Language: Английский

Citations

15