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The mitochondrial genome of Arabidopsis thaliana contains 57 genes in 366,924 nucleotides

Nature Genetics volume 15, pages 5761 (1997) | Download Citation

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Abstract

We have determined the complete sequence of the mitochondrial DNA in the model plant species Arabidopsis thaliana, affording access to the first of its three genomes. The 366,924 nucleotides code for 57 identified genes, which cover only 10% of the genome. Introns in these genes add about 8%, open reading frames larger than 100 amino acids represent 10% of the genome, duplications account for 7%, remnants of retrotransposons of nuclear origin contribute 4% and integrated plastid sequences amount to 1% — leaving 60% of the genome unaccounted for. With the significant contribution of duplications, imported foreign DNA and the extensive background of apparently f unctionless sequences, the mosaic structure of the Arabidopsis thaliana mitochondrial genome features many aspects of size-relaxed nuclear genomes.

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Affiliations

  1. Institut für GenbiologischeForschung, Ihnestrafie 63, D-14195 Berlin andAllgemeine Botanik, Universitat Ulm, Albert-Einstein-Allee, D-89069 Ulm, Germany.

    • Michael Unseld
    • , Joachim R. Marienfeld
    • , Petra Brandt
    •  & Axel Brennicke
  2. Present address: Replicon GmbH, Tempelhofer Weg 11-12, D-10829 Berlin, Germany.

    • Michael Unseld
  3. Present address: GesellschaftfurBiotechnologische Forschung, Mascheroder Weg 1, D-38124 Braunschweig.

    • Petra Brandt
  4. axel.brennicke@biologie.uni-ulm.de

    • Axel Brennicke

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DOI

https://doi.org/10.1038/ng0197-57

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