Journal
FEMS MICROBIOLOGY LETTERS
Volume 358, Issue 1, Pages 55-63Publisher
WILEY-BLACKWELL
DOI: 10.1111/1574-6968.12528
Keywords
Coprothermobacter; thermophilic anaerobic digestion; FISH; syntrophy; proteolytic bacteria
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Funding
- ROUTES
- European Union [265156]
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Thermophilic bacteria have recently attracted great attention because of their potential application in improving different biochemical processes such as anaerobic digestion of various substrates, wastewater treatment or hydrogen production. In this study we report on the design of a specific 16S rRNA-targeted oligonucleotide probe for detecting members of Coprothermobacter genus characterized by a strong protease activity to degrade proteins and peptides. The newly designed CTH485 probe and helper probes hCTH429 and hCTH439 were optimized for use in fluorescence in situ hybridization (FISH) on thermophilic anaerobic sludge samples. In situ probing revealed that thermo-adaptive mechanisms shaping the 16S rRNA gene may affect the identification of thermophilic microorganisms. The novel developed FISH probe extends the possibility to study the widespread thermophilic syntrophic interaction of Coprothermobacter spp. with hydrogenotrophic methanogenic archaea, whose establishment is a great benefit for the whole anaerobic system.
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