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Life (Basel). 2012 Dec 27;3(1):21-37. doi: 10.3390/life3010021.

Pavilion lake microbialites: morphological, molecular and biochemical evidence for a cold-water transition to colonial aggregates.

Life (Basel, Switzerland)

Dirk Schulze-Makuch, Darlene Lim, Bernard Laval, Carol Turse, Marina Resendes de Sousa António, Olivia Chan, Stephen B Pointing, Allyson Brady, Donnie Reid, Louis N Irwin

Affiliations

  1. School of the Environment, Washington State University, Pullman, WA 99164, USA. [email protected].
  2. NASA Ames Research Center, Mail-Stop 245-3, Moffett Field, CA 94035, USA. [email protected].
  3. Department of Civil Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada. [email protected].
  4. School of the Environment, Washington State University, Pullman, WA 99164, USA. [email protected].
  5. School of the Environment, Washington State University, Pullman, WA 99164, USA. [email protected].
  6. School of Biological Sciences, The University of Hongkong, Hong Kong. [email protected].
  7. School of Biological Sciences, The University of Hongkong, Hong Kong. [email protected].
  8. Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada. [email protected].
  9. Nuytco Research Ltd, 216 East Esplanade, North Vancouver, BC, V7L 1A3, Canada. [email protected].
  10. Department of Biological Sciences, University of Texas at El Paso, TX 79968, USA. [email protected].

PMID: 25371330 PMCID: PMC4187197 DOI: 10.3390/life3010021

Abstract

The presence of microbialite structures in a freshwater, dimictic mid-latitudelake and their establishment after the last ice age about 10,000 years ago is puzzling.Freshwater calcite microbialites at Pavilion Lake, British Columbia, Canada, consist of acomplex community of microorganisms that collectively form large, ordered structuredaggregates. This distinctive assemblage of freshwater calcite microbialites was studied through standard microbial methods, morphological observations, phospholipid fatty acid(PLFA) analysis, DNA sequencing and the identification of quorum sensing molecules.Our results suggest that the microbialites may represent a transitional form from theexclusively prokaryotic colonial precursors of stromatolites to the multicellular organismicaggregates that give rise to coral reefs.

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