PMID- 27348074 OWN - NLM STAT- MEDLINE DCOM- 20170908 LR - 20201209 IS - 1462-2920 (Electronic) IS - 1462-2912 (Linking) VI - 19 IP - 1 DP - 2017 Jan TI - Direct-geneFISH: a simplified protocol for the simultaneous detection and quantification of genes and rRNA in microorganisms. PG - 70-82 LID - 10.1111/1462-2920.13432 [doi] AB - Although fluorescence in situ hybridization (FISH) with specific ribosomal RNA (rRNA)-targeted oligonucleotides is a standard method to detect and identify microorganisms, the specific detection of genes in bacteria and archaea, for example by using geneFISH, requires complicated and lengthy (> 30 h) procedures. Here we report a much improved protocol, direct-geneFISH, which allows specific gene and rRNA detection within less than 6 h. For direct-geneFISH, catalyzed amplification reporter deposition (CARD) steps are removed and fluorochrome-labelled polynucleotide gene probes and rRNA-targeted oligonucleotide probes are hybridized simultaneously. The protocol allows quantification of gene copy numbers per cell and the signal of the directly labelled probes enables a subcellular localization of the rRNA and target gene. The detection efficiencies of direct-geneFISH were first evaluated on Escherichia coli carrying the target gene on a copy-control vector. We could show that gene copy numbers correlated to the geneFISH signal within the cells. The new protocol was then applied for the detection of the sulfate thiolhydrolase (soxB) genes in cells of the gammaproteobacterial clade SUP05 in Lake Rogoznica, Croatia. Cell and gene detection efficiencies by direct-geneFISH were statistically identical to those obtained with the original geneFISH, demonstrating the suitability of the simpler and faster protocol for environmental samples. CI - (c) 2016 Society for Applied Microbiology and John Wiley & Sons Ltd. FAU - Barrero-Canosa, Jimena AU - Barrero-Canosa J AD - Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, Celsiusstr. 1, Bremen, D-28359, Germany. FAU - Moraru, Cristina AU - Moraru C AD - Department of Biology of Geological Processes, Institute for Chemistry and Biology of the Marine environment (ICBM), Carl-von-Ossietzky-Strasse 9-11, Oldenburg, D-26111, Germany. FAU - Zeugner, Laura AU - Zeugner L AD - Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, Celsiusstr. 1, Bremen, D-28359, Germany. FAU - Fuchs, Bernhard M AU - Fuchs BM AD - Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, Celsiusstr. 1, Bremen, D-28359, Germany. FAU - Amann, Rudolf AU - Amann R AD - Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, Celsiusstr. 1, Bremen, D-28359, Germany. LA - eng PT - Journal Article DEP - 20160718 PL - England TA - Environ Microbiol JT - Environmental microbiology JID - 100883692 RN - 0 (Oligonucleotide Probes) RN - 0 (RNA, Ribosomal) SB - IM CIN - Environ Microbiol. 2017 Jan;19(1):3-4. PMID: 27486074 MH - Croatia MH - Escherichia coli/*genetics MH - Gammaproteobacteria/*genetics MH - Gene Dosage/*genetics MH - In Situ Hybridization, Fluorescence/*methods MH - Lakes/microbiology MH - Oligonucleotide Probes/*genetics MH - RNA, Ribosomal/*genetics EDAT- 2016/06/28 06:00 MHDA- 2017/09/09 06:00 CRDT- 2016/06/28 06:00 PHST- 2016/06/28 06:00 [pubmed] PHST- 2017/09/09 06:00 [medline] PHST- 2016/06/28 06:00 [entrez] AID - 10.1111/1462-2920.13432 [doi] PST - ppublish SO - Environ Microbiol. 2017 Jan;19(1):70-82. doi: 10.1111/1462-2920.13432. Epub 2016 Jul 18.