Genomic survey, characterization and expression profile analysis of the peptide transporter family in rice (Oryza sativa L.)

Table 1 Ka/Ks and divergence analysis of paralogous OsPTR genes involved in duplication

Paralog pair	Ka	Ks	Ka/Ks	Purifying selection	Diver- gence model	Duplicate type	Sub- family	Protein identity (%)	Interval genes
Os02g37040	0.119	1.333	0.0892	yes	NF	Segmental	V	76.1	/
Os04g39030
Os02g48570	0.247	10.084	0.0245	yes	NF	Segmental	I	55.0	/
Os06g21900
Os03g04570	0.137	2.312	0.0593	yes	SF	Segmental	II	70.6	/
Os10g33170
Os01g55600	0.412	57.191	0.0072	yes	D	Tandem	IV	44.0	0
Os01g55610
Os01g65100	0.178	1.721	0.1035	yes	NF	Tandem	II	64.3	0
Os01g65110
Os01g65150	0.090	0.370	0.2429	yes	D	Tandem	II	82.5	0
Os01g65169
Os01g65200	0.304	1.141	0.2662	yes	NOF	Tandem	II	30.1	0
Os01g65210
Os01g67630	0.087	0.525	0.1653	yes	NF	Tandem	I	61.6	0
Os01g67640
Os03g13240	0.233	1.981	0.1175	yes	SF	Tandem	I	62.6	0
Os03g13250
Os04g41400	0.153	0.975	0.1565	yes	SF	Tandem	III	75.2	3
Os04g41450
Os04g50940	0.085	0.611	0.1397	yes	SF	Tandem	I	82.1	0
Os04g50950
Os05g33960	0.183	1.262	0.1447	yes	NOF	Tandem	IV	62.6	3
Os05g34000
Os05g34010	0.183	3.869	0.0473	yes	NOF	Tandem	IV	65.4	1
Os05g34030
Os05g35594	0.247	1.884	0.1313	yes	/	Tandem	II	55.4	3
Os05g35650
Os06g13200	0.038	0.274	0.1371	yes	/	Tandem	II	89.5	0
Os06g13210
Os06g49220	0.082	0.387	0.2124	yes	NOF	Tandem	I	79.9	2
Os06g49250
Os10g02240	0.290	1.856	0.1565	yes	NF	Tandem	I	56.5	1
Os10g02260
Os11g18044	0.149	0.675	0.2201	yes	SF	Tandem	III	65.4	3
Os11g18110
Os12g44100	0.177	0.592	0.2988	yes	NF	Tandem	IV	70.9	0
Os12g44110

Ka: non-synonymous substitution rate. Ks: synonymous substitution rate. NF: neofunctionalization. SF: subfunctionalization. NOF: nonfunctionalization. D: just after duplication.

ISSN: 1471-2229