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Scientific article
English

Freshwater Foraminiferans Revealed by Analysis of Environmental DNA Samples

Published inThe Journal of eukaryotic microbiology, vol. 50, no. 2, p. 135-139
Publication date2005-07-12
First online date2005-07-12
Abstract

Sediment‐dwelling protists are among the most abundant meiobenthic organisms, ubiquitous in all types of aquatic ecosystems. Yet, because their isolation and identification are difficult, their diversity remains largely unknown. In the present work, we applied molecular methods to examine the diversity of freshwater Foraminifera, a group of granuloreticulosan protists largely neglected until now. By using specific PCR primers, we detected the presence of Foraminifera in all sediment samples examined. Phylogenetic analysis of amplified SSU rDNA sequences revealed two distinct groups of freshwater foraminiferans. All obtained sequences branched within monothalamous (single‐chambered), marine Foraminifera, suggesting a repeated colonization of freshwater environments. The results of our study challenge the traditional view of Foraminifera as essentially marine organisms, and provide a conceptual framework for charting the molecular diversity of freshwater granuloreticulosan protists.

eng
Keywords
  • Diversity
  • Foraminifera
  • Phylogeny
  • Ribosomal RNA
  • SSU
Citation (ISO format)
HOLZMANN, Maria et al. Freshwater Foraminiferans Revealed by Analysis of Environmental DNA Samples. In: The Journal of eukaryotic microbiology, 2005, vol. 50, n° 2, p. 135–139. doi: 10.1111/j.1550-7408.2003.tb00248.x
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ISSN of the journal1066-5234
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