Complete sequences of organelle genomes from the medicinal plant Rhazya stricta(Apocynaceae) and contrasting patterns of mitochondrial genome evolution across asterids

Table 2 Rhazya protein-coding gene content compared to other asterids and two representative angiosperms

	Rhazya	Asclepias	Nicotiana	Mimulus	Boea	Daucus	Helianthus	Vaccinium	Silene	Arabidopsis
atp[x]	●	●^a	●	●	●	●	●	●^d	●	●
ccm[x]	●	●	●	●	●	●	●	●	●	●
cob	●	●	●	●	●	●	●	●^d	●	●
cox[x]	●	●	●	●	●	●	●^c	●	●	●
matR	●	●	●	●	●	●	●	●	●	●
mttB	●	●	●	●	●^b	●	●^c	●	●	●
nad[x]	●	●	●	●	●	●	●^c	●^d	●	●
rpl2	●	●	●	ψ	●^b	○	○	●	○	●
rpl5	●	●	●	●	●^b	●	●	●	●	●
rpl10	●	●	●	●	●^b	●	●	●	○	○
rpl16	●	●^a	●	●	●	●	●	●	○	●
rps1	●	●	●	○	○	●	○	●	○	○
rps2	○	○	○	○	○	○	○	○	○	○
rps3	●	●	●	●	●	●	●^c	●^d	ψ	●
rps4	●	●	●	●	●	●	●	●	ψ	●
rps7	●	●	○	○	●	●	○	○	○	●
rps10	●	●	●	●	●^b	○	○	●	○	○
rps11	○	○	○	○	○	○	○	○	○	○
rps12	●	●	●	●	●	●	●	●	○	●
rps13	●	●	●	●	●	●	●	●	ψ	○
rps14	●	○	ψ	●	●^b	○	○	ψ	ψ	ψ
rps19	●	●	●	○	○	○	ψ^c	●	○	○
sdh3	ψ	●	●	●	●	○	○	ψ	ψ	○
sdh4	●	●	●	●	●	○	ψ^c	●	○	ψ
● present	38	38	37	35	37	33	31	36	25	31
○ absent	2	3	3	5	4	8	8	3	11	8
Ψ pseudo	1	0	1	1	0	0	2	2	5	2

^aAlthough atp6 and rpl16 of Asclepias syriaca are annotated in GenBank as pseudogenes, new analyses suggest functionality for both genes. ^bBoea hygrometrica, ^cHelianthus annuus, and ^dVaccinium macrocarpon mitochondrial genomes were re-annotated using MITOFY [27] in this study. atp[x] = atp[1,4,6,8,9], ccm[x] = ccm[B, C, Fc, Fn], cox[x] = cox[1-3], nad[x] = nad[1, 2, 3, 4, 4L, 5, 6, 7, 9].

ISSN: 1471-2164