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Amplification and sequencing of DNA from a 120–135-million-year-old weevil

Nature volume 363, pages 536538 (10 June 1993) | Download Citation

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Abstract

DNA has been successfully isolated from both fossilized plant1 and animal tissues2–6. The oldest material, dated as 25–40 million years old (Tertiary), was obtained from amber-entombed bees4,5 and termites6. Tissues from both these insects yielded DNA of good quality, which could be amplified by the polymerase chain reaction (PCR) and subsequently sequenced, including the genes encoding 18S ribosomal RNA5,6 and 16S rRNA6. We report here the extraction of DNA from a 120–135-million-year-old weevil (Nemonychidae, Coleoptera) found in Lebanese amber, PCR amplification of segments of the 18S rRNA gene and the internal transcribed spacer, and the corresponding nucleotide sequences of their 315- and 226-base-pair fragments, respectively. These sequen-ces were used for preliminary phylogenetic analysis of the nemonychid's sequence with three extant coleopterans: Lecontellus pinicola (Nemonychidae), Hypera brunneipennis (Curculionidae) and the mealworm Tenebrio molitor (Tenebrionidae), and two extant dipterans: the fruitfly Drosophila melanogaster (Drosophilidae) and mosquito Aedes albopictus (Culicidae) for the purpose of ascertaining the origin of the extracted and amplified DNA. The results revealed that the PCR-amplifted material is that of the extinct nemonychid weevil. This represents the oldest fossil DNA ever extracted and sequenced, extending by 80 million years the age of any previously reported DNA4–6.

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Author information

Affiliations

  1. Biological Sciences Department, California Polytechnic State University, San Luis Obispo, California 93407, USA

    • Raúl J. Cano
    •  & Heridrik N. Poinar
  2. Parasitic Diseases Branch, Centers for Disease Control, Atlanta, Georgia 30333, USA

    • Norman J. Pieniazek
  3. Department of Environmental Health, American University of Beirut, Beirut, Lebanon

    • Aftim Acra
  4. Department of Entomological Sciences, University of California, Berkeley, California 94720, USA

    • George O. Poinar Jr

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