A Straightforward DOPE (Double Labeling of Oligonucleotide Probes)-FISH (FluorescenceIn SituHybridization) Method for Simultaneous Multicolor Detection of Six Microbial Populations
Open Access
- 1 August 2012
- journal article
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 78 (15), 5138-5142
- https://doi.org/10.1128/aem.00977-12
Abstract
Fluorescence in situ hybridization (FISH) with rRNA-targeted oligonucleotide probes is an essential tool for the cultivation-independent identification of microbes within environmental and clinical samples. However, one of the major constraints of conventional FISH is the very limited number of different target organisms that can be detected simultaneously with standard epifluorescence or confocal laser scanning microscopy. Recently, this limitation has been overcome via an elegant approach termed combinatorial labeling and spectral imaging FISH (CLASI-FISH) (23). This technique, however, suffers compared to conventional FISH from an inherent loss in sensitivity and potential probe binding biases caused by the competition of two differentially labeled oligonucleotide probes for the same target site. Here we demonstrate that the application of multicolored, double-labeled oligonucleotide probes enables the simultaneous detection of up to six microbial target populations in a straightforward and robust manner with higher sensitivity and less bias. Thus, this newly developed technique should be an attractive option for all researchers interested in applying conventional FISH methods for the study of microbial communities.Keywords
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