Abstract：
:The complete sequence of the mitochondrial genome of the plant parasitic nematode Xiphinema americanum sensu stricto has been determined. At 12626bp it is the smallest metazoan mitochondrial genome reported to date. Genes are transcribed from both strands. Genes coding for 12 proteins, 2 rRNAs and 17 putative tRNAs (with the tRNA-C, I, N, S1, S2 missing) are predicted from the sequence. The arrangement of genes within the X. americanum mitochondrial genome is unique and includes gene overlaps. Comparisons with the mtDNA of other nematodes show that the small size of the X. americanum mtDNA is due to a combination of factors. The two mitochondrial rRNA genes are considerably smaller than those of other nematodes, with most of the protein encoding and tRNA genes also slightly smaller. In addition, five tRNAs genes are absent, lengthy noncoding regions are not present in the mtDNA, and several gene overlaps are present.
journal_name
J Mol Evoljournal_title
Journal of molecular evolutionauthors
He Y,Jones J,Armstrong M,Lamberti F,Moens Mdoi
10.1007/s00239-005-0102-7keywords:
subject
Has Abstractpub_date
2005-12-01 00:00:00pages
819-33issue
6eissn
0022-2844issn
1432-1432journal_volume
61pub_type
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