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Table 2 Ks estimations of ancient polyploidy and taxon divergence

From: The lipoxygenase gene family: a genomic fossil of shared polyploidy between Glycine max and Medicago truncatula

Materials

Mt-Mt paralogsa

Gm-Mt paralogsa

Gm-Gm paralogsa

Gm-Mt orthologsb

References

ESTs

0.65–0.70

-

0.45–0.50

0.40–0.50

Blanc and Wolfe, 2004

ESTs

0.71

-

0.54

-

Schlueter et al., 2004

39 Gene families

-

-

0.57± 0.05

0.57± 0.02

Pfeil et al., 2005

Lipoxygenases

0.75

0.62c

0.46

0.45d

This study

  1. aThe median Ks value between paralogs represents polyploidy events.
  2. bThe median Ks value between orthologs denotes taxon divergence between soybean and Medicago.
  3. c, d The median Ks values between Gm-Mt paralogs and Gm-Mt orthologs are compared to rule out skewing estimates caused by differential substitution rates. Thus, the ancient polyploidy predates the taxon divergence.