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. 1993 Mar 15;90(6):2246–2250. doi: 10.1073/pnas.90.6.2246

Structural biopolymer preservation in Miocene leaf fossils from the Clarkia site, northern Idaho.

G A Logan 1, J J Boon 1, G Eglinton 1
PMCID: PMC46063  PMID: 11607375

Abstract

The 17- to 20-million-year-old locality at Clarkia, northern Idaho, is renowned for yielding amplifiable DNA from a magnolia leaf fossil. In-source pyrolysis-mass spectrometry and pyrolysis-gas chromatography/mass spectrometry now reveal that molecular preservation of biomacromolecules is highly selective; structural polysaccharides, cutin polyesters, and proteins were not preserved in detectable quantity in the leaf tissues, whereas both lignin and an aliphatic biopolymer were detected. This study points up the need for improved understanding of the precise modes and extent of preservation of biomacromolecules in fossil materials and sediments.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Eglinton G., Logan G. A. Molecular preservation. Philos Trans R Soc Lond B Biol Sci. 1991 Sep 30;333(1268):315–328. doi: 10.1098/rstb.1991.0081. [DOI] [PubMed] [Google Scholar]
  2. Golenberg E. M. Amplification and analysis of Miocene plant fossil DNA. Philos Trans R Soc Lond B Biol Sci. 1991 Sep 30;333(1268):419–427. doi: 10.1098/rstb.1991.0092. [DOI] [PubMed] [Google Scholar]
  3. Golenberg E. M., Giannasi D. E., Clegg M. T., Smiley C. J., Durbin M., Henderson D., Zurawski G. Chloroplast DNA sequence from a miocene Magnolia species. Nature. 1990 Apr 12;344(6267):656–658. doi: 10.1038/344656a0. [DOI] [PubMed] [Google Scholar]
  4. Lomax J. A., Boon J. J., Hoffmann R. A. Characterisation of polysaccharides by in-source pyrolysis positive- and negative-ion direct chemical ionisation-mass spectrometry. Carbohydr Res. 1991 Dec 16;221:219–233. doi: 10.1016/0008-6215(91)80058-u. [DOI] [PubMed] [Google Scholar]
  5. Romanowski G., Lorenz M. G., Wackernagel W. Adsorption of plasmid DNA to mineral surfaces and protection against DNase I. Appl Environ Microbiol. 1991 Apr;57(4):1057–1061. doi: 10.1128/aem.57.4.1057-1061.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Soltis P. S., Soltis D. E., Smiley C. J. An rbcL sequence from a Miocene Taxodium (bald cypress). Proc Natl Acad Sci U S A. 1992 Jan 1;89(1):449–451. doi: 10.1073/pnas.89.1.449. [DOI] [PMC free article] [PubMed] [Google Scholar]

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