Abstract
Direct-geneFISH is a Fluorescence In Situ Hybridization (FISH) method that directly links gene presence, and thus potential metabolic capabilities, to cell identity. The method uses rRNA-targeting oligonucleotide probes to identify cells and dsDNA polynucleotide probes carrying multiple molecules of the same fluorochrome to detect genes. In addition, direct-geneFISH allows quantification of the cell fraction carrying the targeted gene and the number of target genes per cell. It can be applied to laboratory cultures, for example, enrichments and phage infections, and to environmental samples. This book chapter describes the main steps of the direct-geneFISH protocol: probe design and synthesis, the “core” direct-geneFISH protocol and lastly, microscopy and data analysis.
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Barrero-Canosa, J., Moraru, C. (2021). Linking Microbes to Their Genes at Single Cell Level with Direct-geneFISH. In: Azevedo, N.F., Almeida, C. (eds) Fluorescence In-Situ Hybridization (FISH) for Microbial Cells. Methods in Molecular Biology, vol 2246. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-1115-9_12
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DOI: https://doi.org/10.1007/978-1-0716-1115-9_12
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Publisher Name: Humana, New York, NY
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Online ISBN: 978-1-0716-1115-9
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