Journal article
Specific single-cell isolation and genomic amplification of uncultured microorganisms
Applied microbiology and biotechnology, Vol.74(4), pp.926-935
03/2007
Handle:
https://hdl.handle.net/2376/104974
PMID: 17109170
Abstract
We in this study describe a new method for genomic studies of individual uncultured prokaryotic organisms, which was used for the isolation and partial genome sequencing of a soil archaeon. The diversity of Archaea in a soil sample was mapped by generating a clone library using group-specific primers in combination with a terminal restriction fragment length polymorphism profile. Intact cells were extracted from the environmental sample, and fluorescent in situ hybridization probing with Cy3-labeled probes designed from the clone library was subsequently used to detect the organisms of interest. Single cells with a bright fluorescent signal were isolated using a micromanipulator and the genome of the single isolated cells served as a template for multiple displacement amplification (MDA) using the Phi29 DNA polymerase. The generated MDA product was afterwards used for 16S rRNA gene sequence analysis and shotgun-cloned for additional genomic analysis. Sequence analysis showed >99% 16S rRNA gene homology to soil crenarchaeotal clone SCA1170 and shotgun fragments had the closest match to a crenarchaeotal BAC clone previously retrieved from a soil sample. The system was validated using Methanothermobacter thermoautotrophicus as single-cell test organism, and the validation setup produced 100% sequence homology to the ten tested regions of the genome of this organism.
Metrics
5 Record Views
Details
- Title
- Specific single-cell isolation and genomic amplification of uncultured microorganisms
- Creators
- Thomas Kvist - Environmental Microbiology and Biotechnology Group, BioCentrum-Technical University of Denmark, Building 227, Lyngby, DenmarkBirgitte K AhringRoger S LaskenPeter Westermann
- Publication Details
- Applied microbiology and biotechnology, Vol.74(4), pp.926-935
- Academic Unit
- Chemical Engineering and Bioengineering, School of
- Publisher
- Germany
- Identifiers
- 99900546854601842
- Language
- English
- Resource Type
- Journal article