Table 4. Likelihood ratio tests for delta GST genes under branch model.

	Model	-lnL	Model compared	χ2	P
0	One-ratio	4573.55
1	Free-ratio	4558.31	0 and 1	30.48	<0.001**
	Two-ratio
A	Branch A,	4570.59	0 and A	5.92	<0.05*
B	Branch B,	4566.61	0 and B	13.88	<0.001**
C	Branch C	4562.01	0 and C	23.08	<0.001**
A′	Branch A′, ωA = 1	4585.05	A′ and A	28.92	<0.001**
B′	Branch B′, ωB = 1	4631.91	B′ and B	130.60	<0.001**
C′	Branch C′, ωC = 1	4637.80	C′ and C	151.58	<0.001**

Branch A (LmGSTd7), branch B (LmGSTd1and LmGSTd5), branch C (LmGSTd2, LmGSTd3, LmGSTd4 and LmGSTd6). Phylogenetic analysis of delta GSTs from L.migtatoria are shown in S4 Figure. All data are present in S5 Data.