Table 5.

Assumed xenologous mtDNA segments identified by sequence homology between wheat mt and ctDNA segments and between the wheat mt and genomic DNA segments of two prokaryotes

Wheat mtDNA segment			Wheat ct genome			Pm genome			Pu genome
Segment no.	Size (bp)	Genea)	Match. nts.	Homol. (%)	Genea)	Match. nts.	Homol. (%)	Genea)	Match. nts.	Homol. (%)	Genea)
3	445	trnC	348	78.2	trnC	68	15.3	trnC	54	12.1	trnC*
4	69	-	66	95.7	rpoB*	26	37.7	(Note 1)	30	43.5	cgtA*
5	34	-	31	91.2	rpoC2*	20	58.8	(Note 2)	19	55.9	(Note 3)
6	36	-	33	91.7	atpF 5′-ex*	23	63.9	peptidase M*	20	55.6	phoR*
7	59	-	50	86.2	atpF 3′-ex*	20	33.9	(Note 4)	23	39.0	aceE*
8	58	-	56	96.6	“	31	53.4	psb(?)*	28	48.3	gcvP*
9	29	-	29	100.0	“	20	69.0	(Note 5)	20	69.0	priA*
11a	1,110	atp1*	1,089	98.1	atpA*	589	53.1	atpA*	264	23.8	atpA*
13	526	atp1*	460	87.5	atpA*	149	28.3	atpA*	64	12.2	atpA*
14	446	-	445	99.8	psaA*	143	32.1	psaA*	26	5.8	glxB*
15	210	-	188	89.5	-	29	13.8	(Note 6)	26	12.4	?
16	195	trnS-3	177	90.8	trnS-3	75	38.5	trnS	63	32.3	trnS
17	220	-	177	80.5	trnL 3′-ex	41	18.6	trnL*	27	12.3	tolB*
21	32	-	31	96.9	ndhJ*	17	53.1	(Note 7)	17	53.1	(Note 8)
22	58	nad9*	53	91.4	ndhC*	18	31.0	?	20	34.5	nuoD*
23	53	-	47	88.7	trnV 3′-ex*	23	43.4	ATPase*	23	43.4	?
25	189	-	167	88.4	psbF*, psbE*	24	12.7	?	22	11.6	(Note 9)
26	172	-	156	90.7	psbE*	47	27.3	petA*	24	14.0	(Note 10)
27	105	-	101	96.2	petL	24	22.9	dioxygenase*	22	21.0	-
29	61	-	58	95.1	trnP*	24	39.3	?	25	41.0	?
32	176	-	168	95.5	clpP*	49	27.8	clpP*	36	20.5	tauC*
33	135	-	127	94.1	rps11*	27	20.0	psudogene	21	15.6	metS*
34	120	-	104	86.7	rps8*	26	21.7	(Note 11)	30	25.0	rsbU
35	370	-	311	84.1	rpl14*	148	40.0	rpl14*	34	9.2	(Note 12)
36	32	trnI-p	31	96.9	trnI*	18	56.3	trnS*	17	53.1	(Note 13)
37	30	-	25	83.3	trnI*	19	63.3	α-amylase*	16	53.3	braC*
38	54	-	53	98.1	-	21	38.9	(Note 14)	16	29.6	hom*
39	4,319	-	4,220	97.7	(Note 15)	247	5.7	rps7	179	4.1	rps12*
42	1,833	trnA	1,830	99.8	(Note 16)	263	14.3	trnA	191	10.4	trnA*
49	67	-	60	89.6	ndhG*	20	29.9	trnL*	18	26.9	mrsA*
50	398	-	365	91.7	ndhA 3′-ex*	161	40.5	ndh SU*	43	10.8	nuoH*
52	43	-	35	81.4	-	21	48.8	?	17	39.5	ycjp*
53a	32	-	26	81.3	-	0	0.0	-	0	0.0	-
54	180	-	163	90.6	-	33	18.3	?	30	16.7	thiD*

a) Gene located in the respective DNA segment. Genes for wheat mt and ct genomes and those for Pm and Pu genomes are reported by Ogihara et al.,^14,15) Copeland et al.²⁵⁾ and Giovannoni et al.,²⁶⁾ respectively. Some Pm and Pu genes are indicated by their products, for which gene symbols have not been designated. -p: pseudogene, -: no gene located, ?: unidentified gene located

Notes 1–16: (1) carbon storage regulator, (2) exopolyphosphatase, (3) peptidase M50, (4) outer envelope membrane, (5) generic methyl transferase, (6) galactose epimerase, (7) glycosyl transferase, (8) α/β hydrolase fold, (9) branched-chain amino acid transporter protein, (10) secretary autotransporter, (11) Mg-transporter, (12) monomeric sarcosine oxidase, (13) glutamine amidotransferase class-I, (14) gene for RNA methyltransferase, (15) three genes, ndhB, rps7 and 3′-rps12 ex-2, and (16) three genes, trnI 3′-ex, trnA and rrn23.