Fig. 1: The genome of A. suecica is largely colinear with the ancestral genomes.
From: Gradual evolution of allopolyploidy in Arabidopsis suecica
a, Schematic depicting the origin of A. suecica and its current distribution in relation to the ice cover at the Last Glacial Maximum. ka, thousand years ago. Ice cover data are from Natural Resource Canada (https://open.canada.ca/data/en/dataset/a384bada-a787-5b49-9799-f5d589e97bd3). b, Chromosome-level assembly of the A. suecica genome with inner links depicting syntenic blocks between the A. thaliana and A. arenosa subgenomes of A. suecica. Histograms show the distribution of TEs (in blue) and protein-coding genes (in green) along the chromosomes. c, Synteny of the A. thaliana subgenome of A. suecica to the A. thaliana TAIR10 reference. In total 13 colinear synteny blocks were found. d, Synteny of the A. arenosa subgenome to A. lyrata. In total 40 synteny blocks were found, 33 of which were colinear. Of the remaining seven blocks, five represent inversions in the A. arenosa subgenome of A. suecica relative to A. lyrata, one is a translocation and one corresponds to a previously reported misassembly in the A. lyrata genome77. Orange bars show the density of missing regions (‘N’ bases) in the A. lyrata genome.
