Table 4.

Test for Relaxed Selection of Genes in Four Parasitic Species Compared with a Dicot Reference Group

Gene or Gene Group	Relaxation Coefficient (k)	P Value	Likelihood Ratio (LR)	ωa	ωa	AICc	AICc
				(Reference)	(Parasites)	Null	Alternative
Photosynthesis genes
atp	0.74	0.0003	13.26	0.097	0.149	43,791.15	43,777.67
pet	0.33	0.0000	31.72	0.063	0.158	19,082.06	19,052.36
psa	0.31	0.0000	32.33	0.045	0.104	35,687.49	35,657.16
psb	0.87	0.0013	10.27	0.051	0.098	47,893.82	47,885.55
rbcL	0.00	0.0001	15.08	0.126	0.050	12,203.80	12,185.51
ycf3+4	0.63	0.0009	10.96	0.150	0.303	9,631.26	9,622.34
Concatenated	0.77	0.0000	45.41	0.127	0.191	215,811.91	215,768.50
Other genes
accD	1.35	0.0069	7.30	0.454	0.583	18,567.94	18,562.66
cemA	4.41	0.0352	4.43	0.427	0.404	8,052.09	8,049.72
clpP	6.06	0.0107	6.51	0.310	0.149	5,593.79	5,589.35
rpl	0.98	0.8755	0.02	0.209	0.266	20,315.29	20,317.28
rpo	0.80	0.0000	24.91	0.232	0.353	104,719.36	104,696.45
rps	0.64	0.0000	33.93	0.196	0.366	43,755.08	43,723.17
ycf2	1.15	0.0147	5.96	0.858	0.960	53,461.20	53,457.25
All concatenated	0.85	0.0000	25.89	0.162	0.232	261,368.65	261,344.76

Note.—The relaxation coefficient, k, is the estimated selection intensity.

^aCalculated under the partitioned MG94xREV model.