Related Experiment Video
Updated: Aug 13, 2026
11:37
Simultaneous DNA-RNA Extraction from Coastal Sediments and Quantification of 16S rRNA Genes and Transcripts by Real-time PCR
Published on: June 11, 2016
A multiple PCR-primer approach to access the microeukaryotic diversity in environmental samples
Thorsten Stoeck1, Brett Hayward, Gordon T Taylor
1Department of Ecology, Technical University Kaiserslautern, Kaiserslautern, Germany.
Protist
|January 25, 2006
Summary
Researchers explored microbial eukaryote diversity in the Cariaco Basin
Area of Science:
- Marine microbiology
- Eukaryotic diversity
- Anoxic environments
Background:
- The Cariaco Basin is the largest anoxic marine water body globally.
- Previous surveys revealed novel microbial eukaryote lineages but sampled limited diversity.
Purpose of the Study:
- To enhance the recovery of protistan ribosomal RNA (rRNA) from the Cariaco Basin.
- To explore the largely unknown microbial eukaryote diversity in anoxic waters.
Main Methods:
- Systematic application of multiple polymerase chain reaction (PCR) primer sets.
- Substantially increased sequencing efforts.
- Focus on anoxic waters below the oxic-anoxic interface.
Main Results:
- Detected numerous novel protistan lineages previously missed by single-primer approaches.
- Over 75% of identified operational taxonomic units (OTUs) were novel.
- High novelty and low overlap between primer sets indicated substantial undiscovered diversity.
Conclusions:
- Protistan diversity in anoxic environments is likely far greater than previously estimated.
- A single sample may harbor thousands of novel protistan species.
- Multiple PCR primer combinations are essential for comprehensive diversity assessment.
