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The outer ring represents the maize NB mitochondrial genome, with identified genes labeled on the outside and repeats larger than 0.5 kb indicated by the arrows within the thin ring. Direction of the repeat is shown by arrowheads. The 5 thick inner rings represent, from outside to inside, mtDNAs of rice, sugar beet, Arabidopsis, rapeseed, and liverwort. Similarities to maize of 80% (dark blue) to 100% (red) are indicated. The percentages were derived from a BLASTN (WashU BLAST 2.0) comparison between each of the sequenced plant mitochondrial genomes and maize NB.
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Linear representations of maize mitochondrial genomes. The relative positions of genes are indicated by horizontal lines, color coded by function, as indicated in the left-side key. Cis-spliced exons are connected by ^. tRNA genes are indicated by short lines. Transcription direction is down for genes on the right and up for those on the left of each genome bar. For very closely spaced genes, spacing has been increased for visibility. Arrow boxes within each genome bar indicate large repeats (> 0.5 kb), color coded according to the right-side key, with arrowheads indicating orientation. Genes in repeats contain the suffix -1 or -2. Rectangular green boxes/lines indicate transferred plastid sequences. Genes in plastid sequences contain the suffix -cp. Scale is in kb. (Fig. 1 of Allen et al. 2007)
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Maize mitochondrial genomes are highly rearranged relative to one another. (Analysis used Miropeat).
324 Tucker Hall
Biological Sciences
University of Missouri - Columbia