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Biology of the Precambrian Genus Kakabekia: New Observations on Living Kakabekia barghoorniana.

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  • 1. DEPARTMENT OF MICROBIOLOGY, UNIVERSITY OF HAWAII, HONOLULU, HAWAII 96822.
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    • Siegel BZ 1
    (1 author)

Proceedings of the National Academy of Sciences of the United States of America, 01 Oct 1970, 67(2):1005-1010
https://doi.org/10.1073/pnas.67.2.1005 PMID: 16591868 PMCID: PMC283305

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Abstract 

Kakabekia barghoorniana Siegel, living species of a fossil genus Kakabekia, has now been cultured from Alaskan soil samples obtained from the Mendenhall Glacier near Juneau and from the Point Barrow region above the Arctic Circle. Morphological comparisons, especially of mantle variations, show that fossil and living populations overlap in many details. Cytochemical tests demonstrate that living Kakabekia has no storage forms of lipid or polysaccharide and no phenoloxidase. Some individuals (19-33%) contain heme enzymes but most do not; hence they cannot utilize O(2) even in air.

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Proc Natl Acad Sci U S A. 1970 Oct; 67(2): 1005–1010.
PMCID: PMC283305
PMID: 16591868

Biology of the Precambrian Genus Kakabekia: New Observations on Living Kakabekia barghoorniana

B. Z. Siegel and S. M. Siegel
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Abstract

Kakabekia barghoorniana Siegel, living species of a fossil genus Kakabekia, has now been cultured from Alaskan soil samples obtained from the Mendenhall Glacier near Juneau and from the Point Barrow region above the Arctic Circle. Morphological comparisons, especially of mantle variations, show that fossil and living populations overlap in many details. Cytochemical tests demonstrate that living Kakabekia has no storage forms of lipid or polysaccharide and no phenoloxidase. Some individuals (19-33%) contain heme enzymes but most do not; hence they cannot utilize O2 even in air.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Barghoorn ES, Tyler SA. Microorganisms from the Gunflint Chert: These structurally preserved Precambrian fossils from Ontario are the most ancient organisms known. Science. 1965 Feb 5;147(3658):563–575. [Abstract] [Google Scholar]
  • Siegel SM, Giumarro C. On the culture of a microorganism similar to the precambrian microfossil kakabekia umbellata barghoorn in nh(3)-rich atmospheres. Proc Natl Acad Sci U S A. 1966 Feb;55(2):349–353. [Europe PMC free article] [Abstract] [Google Scholar]
Articles from Proceedings of the National Academy of Sciences of the United States of America are provided here courtesy of National Academy of Sciences

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