Significant Microsynteny with New Evolutionary Highlights Is Detected through Comparative Genomic Sequence Analysis of Maize CCCH IX Gene Subfamily

Table 2

Estimation of the dates of large-scale duplication events in three grasses.

Synteny blocks of CCCH IX genes	Number of conserved flanking protein-coding genes	Synonymous sites	Ks (mean ± s.d.)	Date (mya)
OsC3H2 & OsC3H35	5	299.25	1.0927 ± 0.4254	84.0538
OsC3H2 & SbC3H47	3	292.50	1.0915 ± 0.4868	83.9615
OsC3H2 & SbC3H12	13	268.75	0.5470 ± 0.2981	42.0769
OsC3H2 & ZmC3H51	3	293.00	0.7827 ± 0.4078	60.2077
OsC3H35 & SbC3H12	5	274.42	0.9811 ± 0.3190	75.4692
OsC3H35 & SbC3H47	3	296.67	0.4635 ± 0.1314	35.6538
SbC3H12 & SbC3H47	3	271.58	0.8632 ± 0.5594	66.4000
SbC3H12 & ZmC3H51	3	275.17	0.2552 ± 0.0552	19.6308
OsC3H35 & ZmC3H38	3	302.58	0.9811 ± 0.6874	75.4692
OsC3H10 & OsC3H37	7	173.67	0.7084 ± 0.2090	54.4923
OsC3H10 & ZmC3H39	6	169.08	0.6818 ± 0.1138	52.4462
OsC3H37 & ZmC3H39	6	193.00	0.5051 ± 0.0373	38.8538
OsC3H37 & ZmC3H53	5	197.83	0.5696 ± 0.1238	43.8154
OsC3H50 & ZmC3H10	9	289.33	0.5867 ± 0.1815	45.1285
OsC3H50 & SbC3H10	16	515.00	0.5893 ± 0.1738	45.3308
OsC3H50 & ZmC3H34	5	298.42	0.6653 ± 0.1309	51.1769
OsC3H50 & ZmC3H43	6	501.00	0.6014 ± 0.1371	46.2615
SbC3H10 & ZmC3H10	7	292.67	0.1816 ± 0.0469	13.9692
SbC3H10 & ZmC3H34	5	307.92	0.1692 ± 0.0579	13.0154
SbC3H10 & ZmC3H43	6	514.33	0.1498 ± 0.0200	11.5231
ZmC3H10 & ZmC3H34	3	275.50	0.2019 ± 0.0367	15.5308
ZmC3H10 & ZmC3H43	4	291.83	0.1990 ± 0.0326	15.3077
ZmC3H34 & ZmC3H43	5	310.50	0.0157 ± 0.0352	1.2077
OsC3H24 & SbC3H2	14	572.67	0.8338 ± 0.4394	64.1385
OsC3H24 & ZmC3H4	4	571.75	0.6299 ± 0.2791	48.4539
OsC3H24 & ZmC3H28	5	359.50	0.5979 ± 0.1667	45.9923
SbC3H2 & ZmC3H4	4	570.75	0.1853 ± 0.1206	14.2538
SbC3H2 & ZmC3H28	5	359.92	0.1921 ± 0.0503	14.7769
ZmC3H4 & ZmC3H28	4	361.00	0.2170 ± 0.0754	16.6923
OsC3H33 & SbC3H45	9	458.25	0.5963 ± 0.1419	45.8692
SbC3H45 & ZmC3H54	3	269.67	0.2567 ± 0.0433	19.7462