Characterization of the Populus Rab family genes and the function of PtRabE1b in salt tolerance

BMC Plant Biology

Table 1 Divergence between PtRab paralogous pairs

Subfamily	Gene 1	Gene 2	Duplication	Ka	Ks	Ka/Ks	Date (MYA)
RabA	PtRabA1b	PtRabA1e	W	0.108	0.366	0.295	20.13
	PtRabA1d	PtRabA1h	W	0.132	0.444	0.297	24.37
	PtRabA1i	PtRabA1j	W	0.040	0.182	0.218	9.98
	PtRabA2a	PtRabA2b	W	0.025	0.435	0.058	23.88
	PtRabA2c	PtRabA2f	W	0.014	0.191	0.075	10.50
	PtRabA2d	PtRabA2e	W	0.022	0.296	0.073	16.25
	PtRabA3a	PtRabA3b	W	0.056	0.334	0.167	18.35
	PtRabA4b	PtRabA4d	W	0.026	0.223	0.115	12.26
	PtRabA4c	PtRabA4e	W	0.032	0.257	0.126	14.10
	PtRabA5a	PtRabA5d	W	0.008	0.322	0.025	17.71
	PtRabA5c	PtRabA5e	W	0.027	0.243	0.110	13.35
RabB	PtRabB1a	PtRabB1c	W	0.120	0.512	0.235	28.14
RabC	PtRabC1b	PtRabC1c	W	0.019	0.193	0.098	10.59
	PtRabC2a	PtRabC2d	W	0.043	0.195	0.220	10.73
	PtRabC2b	PtRabC2c	W	0.042	0.497	0.084	27.32
RabD	PtRabD1a	PtRabD1b	W	0.009	0.181	0.047	9.96
	PtRabD2b	PtRabD2d	W	0.043	0.260	0.165	14.30
	PtRabD2c	PtRabD2e	W	0.117	0.293	0.399	16.12
RabE	PtRabE1a	PtRabE1c	W	0.029	0.258	0.112	14.15
RabE	PtRabE1b	PtRabE1d	W	0.010	0.223	0.045	12.27
RabF	PtRabF1a	PtRabF1b	W	0.011	0.257	0.043	14.10
RabF	PtRabF2b	PtRabF2c	W	0.027	0.239	0.111	13.14
RabG	PtRabG3a	PtRabG3c	W	0.013	0.246	0.051	13.54
	PtRabG3b	PtRabG3f	W	0.028	0.296	0.094	16.28
	PtRabG3d	PtRabG3h	W	0.006	0.212	0.029	11.63
	PtRabG3e	PtRabG3g	W	0.084	0.302	0.277	16.60
RabH	PtRabH1a	PtRabH1c	W	0.039	0.200	0.195	10.99

Notes: W, whole genome-wide duplication; Ka, non-synonymous substitution rate; Ks, synonymous substitution rate; MYA, million years ago

ISSN: 1471-2229