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TIAB |
The Complete Sequence of the Mitochondrial Genome ofButomus umbellatus- A Member of an Early Branchi |
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Introduction |
The mitochondrial genomes of embryophytes or land plants are renowned among eukaryotes for their ast |
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Materials and Methods |
Mitochondrial Genome Sequencing
Fresh plant material was collected from a single individual (voucher |
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Materials and Methods |
Sequence Assembly
A total of 87,048 sequences (average size 207 nt) were assembled in Newbler 2.3 (4 |
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Materials and Methods |
Sequence Analyses
Coding regions were identified by BLASTX searches performed against a local databa |
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Materials and Methods |
Phylogenetic Analyses
Sequences of 24 mitochondrial genes from Butomus and 25 seed plant species, fo |
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Results and Discussion |
The Mitochondrial Genome of Butomus
A total of 63,056 individual sequences, corresponding to 72% of |
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Results and Discussion |
Plastid DNA Insertions
The mitochondrial genome of vascular plants is known to import fragments of D |
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Results and Discussion |
Nuclear DNA Insertions
The mitochondrial genome may also integrate DNA from the nuclear genome [4], |
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Results and Discussion |
Protein Coding Genes
The mitochondrial genome of Butomus contains 28 protein coding genes (Table 2, |
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Results and Discussion |
rRNA Genes
The mitochondrial genome of Butomus includes three rRNA genes (5S, 18S, and 26S rRNA gene |
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Results and Discussion |
tRNA Genes
None of the angiosperm mitochondrial genomes sequenced to date has included a full set of |
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Results and Discussion |
Introns
In Butomus we found a total of 21 group II introns distributed among seven protein coding ge |
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Results and Discussion |
Repetitive Sequences
Repetitive sequences, often of considerable length, are common in plant mitocho |
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Results and Discussion |
RNA Editing
In all land plants (Embryophytes), except marchantiid liverworts, transcripts of the mit |
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Results and Discussion |
Phylogeny and Substitution Rates
As expected, a phylogenetic analysis of 24 protein coding genes fro |
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Results and Discussion |
Perspectives
The number of complete plant mitochondrial genomes is growing rather slowly, primarily |
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Caption-Table 1 |
Comparison of complete mitochondrial genomes of selected seed plants. |
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Caption-Table 2 |
Gene content of the mitochondrial genome of Butomus umbellatus. |
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Caption-Figure 1 |
Circular map of the mitochondrial genome of Butomus umbellatus.
Known protein coding, rRNA, and tRNA |
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Caption-Figure 2 |
Gene content in selected seed plant mitochondrial genomes.
Dark squares indicate presence of assumed |
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Caption-Figure 3 |
Phylogeny of 26 seed plants inferred from 24 protein coding mitochondrial genes.
Phylogenetic tree b |
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Caption-Figure 4 |
Phylogenetic analysis of substitution rates in three mitochondrial rRNA genes.
Analyses are based on |
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Caption-Table 3 |
Sequences of plastid origin in mitochondrial genome of Butomus umbellatus. |
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Caption-Table 4 |
Long repeats in the mitochondrial genome of Butomus umbellatum. |
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