Table 1.

Estimated K_a/K_s ratios and divergence times of the duplicated PmNAC genes.

Duplicated Gene Pairs			Ks	Ka	Ka/Ks	Type of Duplication	Type of Selection	Divergence Time (Mya)
PmNAC003	vs.	PmNAC004	0.253	0.072	0.283	Tandem	Purifying	8.43
PmNAC011	vs.	PmNAC012	0.240	0.189	0.787	Tandem	Purifying	8.01
PmNAC021	vs.	PmNAC022	0.574	0.656	1.144	Tandem	Purifying	19.12
PmNAC036	vs.	PmNAC037	0.076	0.033	0.438	Tandem	Purifying	2.54
PmNAC037	vs.	PmNAC038	1.102	1.670	1.515	Tandem	Purifying	36.73
PmNAC038	vs.	PmNAC039	1.050	1.659	1.580	Tandem	Positive	35.00
PmNAC044	vs.	PmNAC045	1.452	2.173	1.497	Tandem	Positive	48.39
PmNAC045	vs.	PmNAC046	0.093	0.025	0.270	Tandem	Purifying	3.09
PmNAC058	vs.	PmNAC059	1.743	2.088	1.198	Tandem	Positive	58.11
PmNAC061	vs.	PmNAC062	1.220	1.101	0.903	Tandem	Purifying	40.65
PmNAC062	vs.	PmNAC063	1.033	1.221	1.183	Tandem	Positive	34.42
PmNAC074	vs.	PmNAC075	0.034	0.036	1.035	Tandem	Positive	1.15
PmNAC075	vs.	PmNAC076	0.441	0.166	0.377	Tandem	Purifying	14.69
PmNAC080	vs.	PmNAC081	1.188	2.878	2.424	Tandem	Positive	39.58
PmNAC088	vs.	PmNAC089	1.454	1.926	1.324	Tandem	Positive	48.47
PmNAC005	vs.	PmNAC112	1.550	0.484	0.312	Segmental	Purifying	51.66
PmNAC011	vs.	PmNAC093	1.301	0.443	0.340	Segmental	Purifying	43.37
PmNAC024	vs.	PmNAC055	1.341	0.336	0.250	Segmental	Purifying	44.71
PmNAC025	vs.	PmNAC082	1.352	0.276	0.204	Segmental	Purifying	45.05
PmNAC056	vs.	PmNAC083	1.462	0.263	0.180	Segmental	Purifying	48.72
PmNAC057	vs.	PmNAC082	2.613	0.566	0.217	Segmental	Purifying	87.11
PmNAC060	vs.	PmNAC081	2.246	0.360	0.160	Segmental	Purifying	74.86
PmNAC064	vs.	PmNAC080	1.466	0.245	0.167	Segmental	Purifying	48.87

K_a, non-synonymous; K_s, synonymous; Mya, Million years ago.