Table 2. Comparison of genome features in six higher plant mt genomes.

Plant species	Coding regions (%)				Non-coding regions (%)
	Protein-coding genes	cis-spliced introns	rRNAs	tRNAs
G. biloba	9.95	11.31	1.44	0.5	76.8
Z. mays	6.06	4.06	0.99	0.28	88.61
G. max	8.48	8.09	1.31	0.35	81.77
G. raimondii	5.14	5.28	1.61	0.28	87.69
P. tremula	3.84	3.33	0.69	0.21	91.93
S. suchowensis	4.68	4.21	0.83	0.27	90.01