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Related Experiment Videos

Coccolith ultrastructure and biomineralisation

Young1, Davis, Bown

  • 1Palaeontology Department, The Natural History Museum, Cromwell Road, London, SW7 5BD.

Journal of Structural Biology
|August 12, 1999
PubMed
Summary

This study analyzes calcite biomineralization and coccolith ultrastructure in haptophytes. Findings suggest diverse calcareous structures share a common origin and utilize similar genetic and biochemical pathways.

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Area of Science:

  • Marine biology
  • Biomineralization
  • Paleontology

Background:

  • Haptophytes are diverse marine algae known for producing intricate calcite plates called coccoliths.
  • Understanding the relationship between coccolith ultrastructure and the biomineralization process is key to deciphering algal evolution and paleoenvironmental proxies.

Purpose of the Study:

  • To analyze the relationship between calcite biomineralization and coccolith ultrastructure across diverse calcifying haptophytes.
  • To identify aspects of coccolith ultrastructure likely resulting from self-organizing processes.
  • To review evidence from crystallographic, ultrastructural, biochemical, and phylogenetic studies.

Main Methods:

  • Integration of crystallographic and ultrastructural data.
  • Review of biochemical and phylogenetic information.

Related Experiment Videos

  • Analysis of heterococcolith rim nucleation, crystal growth regulation, and holococcolith biomineralization.

    • Main Results:

    • Reassessment of the V/R model for heterococcolith rim nucleation.
    • Insights into crystal growth regulation in heterococcoliths.
    • Examination of holococcolith biomineralization and other haptophyte biomineralization modes.

    Conclusions:

    • Diverse calcareous structures in haptophytes likely share a common phylogenetic origin.
    • Biomineralization in haptophytes operates via a limited set of shared genetic and biochemical pathways.
    • Self-organizing processes play a significant role in shaping coccolith ultrastructure.