Cited by 633Forensic and Genetic ResearchArchaeology and ancient environmental studiesPleistocene-Era Hominins and Archaeology

The half-life of DNA in bone: measuring decay kinetics in 158 dated fossils

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Allentoft, Morten E., Collins, Matthew, Harker, David, Haile, James, Oskam, Charlotte L., Hale, Marie L., Campos, Paula F., Samaniego, Jose A. +6 more·2012·Proceedings of the Royal Society B: Biological Sciences

Abstract

Claims of extreme survival of DNA have emphasized the need for reliable models of DNA degradation through time. By analysing mitochondrial DNA (mtDNA) from 158 radiocarbon-dated bones of the extinct New Zealand moa, we confirm empirically a long-hypothesized exponential decay relationship. The average DNA half-life within this geographically constrained fossil assemblage was estimated to be 521 years for a 242 bp mtDNA sequence, corresponding to a per nucleotide fragmentation rate ( k ) of 5.50 × 10 –6 per year. With an effective burial temperature of 13.1°C, the rate is almost 400 times slower than predicted from published kinetic data of in vitro DNA depurination at pH 5. Although best described by an exponential model ( R 2 = 0.39), considerable sample-to-sample variance in DNA preservation could not be accounted for by geologic age. This variation likely derives from differences in taphonomy and bone diagenesis, which have confounded previous, less spatially constrained attempts to study DNA decay kinetics. Lastly, by calculating DNA fragmentation rates on Illumina HiSeq data, we show that nuclear DNA has degraded at least twice as fast as mtDNA. These results provide a baseline for predicting long-term DNA survival in bone.

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  • Despite DNA's long-term stability in well-controlled environments such as ancient bone, both aqueous solutions and dried DNA only exhibit a half-life on the order of months to a few years under ambient conditions.

    “Despite DNA’s long-term stability in well-controlled environments such as ancient bone, with storage durations as long as several hundred thousand years,54,55 both aqueous solutions and dried DNA only exhibit a half-life on the order of months to a few years under ambient conditions.56”
  • DNA offers massive parallelization of copy, delete, and read operations; it takes the same amount of time for one or billions of molecules.

    “As a molecular storage system, DNA offers massive parallelization of copy, delete, and read operations; it takes the same amount of time for one or billions of molecules.”

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Authors
Allentoft, M. E., Collins, M., Harker, D., Haile, J., Oskam, C. L., Hale, M. L., Campos, P. F., Samaniego, J. A., Gilbert, M. T. P., Willerslev, E., Zhang, G., Scofield, R. P., Holdaway, R. N., & Bunce, M.
Affiliations
  • University of Copenhagen (DK)
  • University of York (GB)
  • Murdoch University (AU)
  • University of Canterbury (NZ)
  • Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350 Copenhagen K, Denmark
  • BGI Group (China) (CN)
  • Canterbury Museum (NZ)
Corresponding author
  • Allentoft, Morten E.
  • Bunce, Michael
Venue
Proceedings of the Royal Society B: Biological Sciences
Published
2012-10-10
Volume
279
Issue
1748
Pages
4724-4733
ISSN
  • 0080-4649 (ISSN-L)
  • 0962-8452
  • 1471-2954
OpenAlex
W2126557729
Cited by
633
References
70
Citations by year
2026: 39 · 2025: 38 · 2024: 37 · 2023: 48 · 2022: 51 · 2021: 86 · 2020: 44 · 2019: 48 · 2018: 50 · 2017: 44 · 2016: 48 · 2015: 39 · 2014: 34 · 2013: 25 · 2012: 1
FWCI
19.02
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the Royal Society B Biological Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Murdoch University Research Portal (submittedVersion)
  • eSpace (Curtin University) (submittedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Funders
  • Royal Society
  • Royal Society Te Apārangi
  • Lundbeckfonden (R109-2012-9995, R70-2010-6286, R38-2008-3048, R24-2008-2527)
  • Danmarks Frie Forskningsfond (10‐081390)
  • Natural Environment Research Council (NE/G000204/1)
  • Australian Research Council (FT0991741)
  • Marsden Fund
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Forensic and Genetic Research
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Archaeology and ancient environmental studies
  • Social Sciences › Anthropology › Pleistocene-Era Hominins and Archaeology
Keywords
mitochondrial DNA, nuclear DNA, fossil bones, radiocarbon dating, exponential decay model, burial temperature, taphonomy, bone diagenesis, ancient DNA preservation
MeSH terms
Animals, Birds, Bone and Bones, DNA, Mitochondrial, Fossils, Half-Life, Hydrogen-Ion Concentration, Kinetics, Models, Genetic, New Zealand, Temperature, Radiometric Dating, Real-Time Polymerase Chain Reaction

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