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. 2021 Aug 19;5(10):1382–1393. doi: 10.1038/s41559-021-01523-y

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — a, Venn diagram of orthologue clusters among A. thaliana (Ath, Col), A. arenosa (A subgenome of 738) and A. suecica (sT and sA subgenomes). b, GO enrichment terms of the genes specific to T lineage (Col, sT subgenome of A. suecica) and A lineage (A. arenosa, sA subgenome of A. suecica, A. lyrata, A. halleri). Dashed line indicates onefold enrichment. c, Expansion and contraction of gene families in Arabidopsis-related species with the numbers in parenthesis, indicating gene families subject to expansion (+red) and contraction (–blue), respectively. Black dots indicate node T (ancestor of A. thaliana) and node A (ancestor of A. arenosa), respectively. Bar graphs show the proportion of single-copy (blue), two-copy (red) and multi-copy (green) genes among all (All) and orphan (Orphan) genes in corresponding species. d, Micro-colinearity patterns between FLC and flanking genes in Col, Aar (A subgenome of 738), A. suecica (sT and sA subgenomes) and A. lyrata (Aly). Ribbons indicate colinearity of FLC genes (purple) and its flanking genes (grey). e, FLC expression is correlated with CHH methylation and siRNA levels in A. thaliana (Ath), F₁, resynthesized allotetraploids (Allo733 and Allo738) and natural A. suecica (Asu). Scales indicate mRNA (0–100), CHH methylation density (0–1) and 24-nucleotide siRNA (0–1,050) levels. Different letters in mRNA (transcripts per kilobase million) indicate statistical significance of P < 0.05 (analysis of variance (ANOVA) test, n = 3).

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