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Results: 3

1.
Figure 1

Figure 1. Circos diagram illustrating syntentic relationships between Medicago, Glycine, Lotus and Vitis. From: The Medicago Genome Provides Insight into the Evolution of Rhizobial Symbioses.

Homologous gene pairs were identified for all pairwise comparisons between Mt, Gm, Lj and Vv genomes. Syntenic regions associated with the ancestral WGD events were identified by visually inspection of correponding dot-plots. The large Mt5–Mt8 synteny block (yellow) was found to have two syntenic regions in Lj (red), four syntenic regions in Gm (blue) and three in Vv (green).

Nevin D. Young, et al. Nature. ;480(7378):520-524.
2.
Figure 2

Figure 2. Circos diagram illustrating the Medicago WGD and selected gene families. From: The Medicago Genome Provides Insight into the Evolution of Rhizobial Symbioses.

The 963 WGD-derived paralogous gene pairs were examined for overlap with the nodule-enhanced gene list (Datafile S2). Resulting gene pairs were joined and plotted as either blue circles (only one of the duplicates is nodule-enhanced) or red (both nodule enhanced). Gene densities of NBS-LRRs, NCRs and other defensin-like proteins are plotted against chromosome position. Density was calculated using a sliding window (100 kb window with 50 kb steps).

Nevin D. Young, et al. Nature. ;480(7378):520-524.
3.
Figure 3

Figure 3. Microsynteny comparison between Medicago homoeologues and corresponding regions of Glycine and Vitis. From: The Medicago Genome Provides Insight into the Evolution of Rhizobial Symbioses.

Microsyntenic genome segments are centered around Medtr3g104510/Medtr1g015890 (Table S10), a duplicated region derived from the ~58 Mya WGD event noted in orange. The <13 Mya Gm-specific WGD is colored yellow. Orthologous/paralogous gene pairs are indicated through use of a common color. White arrows represent genes with no syntenic homologue(s) in this genome region. Gray arrow indicates a Mt gene model with syntenic homologue in soybean, but no soybean gene model in the current annotation (www.phytozome.net/soybean).

Nevin D. Young, et al. Nature. ;480(7378):520-524.

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