Characteristics of the completed chloroplast genome sequence of Xanthium spinosum: comparative analyses, identification of mutational hotspots and phylogenetic implications

Table 3 Comparison of site models, positive selective amino acid loci and estimation of parameters for accD protein-coding genes in the Heliantheae species

Protein-coding gene	Model	np	Ln L	Estimates of parameters				Model compared	LRT P-value	Positive sites
accD	M3	45	− 1567.812	p:	0.05791	0.85997	0.08211	M0 vs. M3	0	[]
	M3	45	− 1567.812	ω:	0.22724	0.22724	3.70209			[]
	M0	41	− 1597.602	ω0:	0.36846					Not Allowed
	M2a	44	−1567.812	p:	0.91789	0	0.08211	M1a vs. M2a	0.000196255	[]
	M2a	44	−1567.812	ω:	0.22724	1	3.70208			[]
	M1a	42	− 1576.349	p:	0.82957	0.17043				Not Allowed
	M1a	42	− 1576.349	ω:	0.11911	1				Not Allowed
	M8	44	−1567.829	p0 = 0.91839	p = 29.41052	q = 99.00000		M7 vs. M8	0.000002362	35 S 0.936, 42 R 0.963, 98 H 0.701, 129 Q 0.685, 177 S 0.616, 181 S 0.765, 184 N 0.519, 185 A 1.000*, 187 A 0.905
	M8	44	−1567.829	(p1 = 0.08161)	ω = 3.72034
	M7	42	− 1580.784	p=	0.07226	q=	0.08717			Not Allowed
	M8a	43	−1576.468	p0 = 0.82999	p = 13.67839	q = 99.00000		M8a vs. M8	0.000032257	Not Allowed
	M8a	43	−1576.468	(p1 = 0.17001)	ω = 1.00000			M8a vs. M8	0.000032257	Not Allowed

ISSN: 1471-2164