An unexpectedly large and loosely packed mitochondrial genome in the charophycean green alga Chlorokybus atmophyticus

Table 2 Differences between the mitochondrial gene repertoires of Chlorokybus, other charophycean green algae and bryophytes

Gene^a	Mesostigma	Chlorokybus	Chaetosphaeridium	Chara	Marchantia	Physcomitrella
nad7	+	+	+	+	- ^b	+
nad10	-	+	-	-	-	-
rpl2	-	+	+	+	+	+
rpl14	+	+	-	+	-	-
rps8	-	+	-	-	+	-
rps10	+	+	+	+	+	-
rps13	+	+	+	-	+	+
yejR	-	-	-	+	+	+
yejU	-	-	-	+	+	+
yejV	-	-	-	+	+	+
trnI(cau)	-	+	+	+	+	+
trnI(gau)	+	+	+	+	-	-
trnL(caa)	+	+	+	- ^b	+	+
trnL(gag)	-	+	-	-	-	-
trnN(guu)	+	+	+	+	+	-
trnR(acg)	+	-	+	+	+	+
trnR(ucg)	+	+	-	-	+	-
trnS(acu)	-	-	+	-	-	-
trnS(gcu)	+	+	+	+	+	-
trnT(ggu)	-	+	+	+	+	+

^a Only the conserved genes that are missing in one or more genomes are indicated. Plus and minus signs denote the presence and absence of genes, respectively. A total of 55 genes are shared by all compared mtDNAs: atp1,4,6,8,9, cob, cox1,2 3, mttB, nad1,2 3, 4,4L,5,6,9, rnl, rns, rpl5,6,16, rps1,2,3,4,7,11,12,14,19, rrn5, sdh3,4, trnA(ugc),C(gca),D(guc),E(uuc),F(gaa),G(gcc),G(ucc),H(gug), K(uuu),L(uaa),L(uag),Me(cau),Mf(cau),P(ugg),Q(uug),R(ucu),S(uga),V(uac),W(cca),Y(gua).
^b trnL(caa) and nad7 are pseudogenes in Chara and Marchantia mtDNAs, respectively.

ISSN: 1471-2164