Extended Data Fig. 7: Syntenic knob signatures.
From: European maize genomes highlight intraspecies variation in repeat and gene content
x-axis: number of knob units per 2 Mb windows, y axis: chromosome length in Mb. a, Minor knob locations in the assemblies (y max=100). The majority of the minor knob locations are syntenic between the 8 lines, especially for chromosomes 4,5,and 6, and display no clear distinction between flint and dent. This is in contrast to the knob intensities and extent detected by FISH hybridizations (Fig. 3a). We hypothesize that these minor locations act as ‘anchor points’ for knob movement or expansion, which seem to occur within very short evolutionary time-spans since the separation of different breeding lines. Larger knob stretches could impact the expression of surrounding genes and influence local recombination rates. b, Major knob locations in the assemblies (Y max=4000).
