Table 2 Correlated evolution was detected in two pairs of metabolite classes with Pagel’s method76: (1) chalcones and flavonoids; and (2) kavalactones/butenolides and p-alkenyl phenols.

From: Phytochemistry reflects different evolutionary history in traditional classes versus specialized structural motifs

Comparison

Model

AIC

Δ AIC

AIC weight

Chalcones, flavonoids

Chalcones contingent on flavonoids

95.58

0

0.51

Flavonoids contingent on chalcones

96.02

0.44

0.41

Interdependent evolution

99.84

4.26

0.06

Independent evolution

102.46

6.88

0.02

Kavalactones/butenolides, p-alkenyl phenols

Interdependent evolution

62.35

0

0.95

Kavalactones/butenolides contingent on p-alkenyl phenols

69.65

7.29

0.03

p-alkenyl phenols contingent on kavalactones/butenolides

70.61

8.26

0.02

Independent evolution

71.57

9.22

0.01

  1. A model comparison framework was employed to evaluate four potential models of trait evolution using AIC: interdependent evolution (transition rate in one trait depends on state at another, and vice versa); contingent change (transition rate in one trait depends on state at another, but not the converse); and independent evolution.
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