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Evaluation of group‐specific, 16S rRNA‐targeted scissor probes for quantitative detection of predominant bacterial populations in dairy cattle rumen
Author(s) -
Uyeno Y.,
Sekiguchi Y.,
Tajima K.,
Takenaka A.,
Kurihara M.,
Kamagata Y.
Publication year - 2007
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/j.1365-2672.2007.03443.x
Subject(s) - ribosomal rna , rumen , eubacterium , biology , 16s ribosomal rna , oligomer restriction , bacteria , prevotella , microbiology and biotechnology , terminal restriction fragment length polymorphism , food science , biochemistry , oligonucleotide , fermentation , polymerase chain reaction , dna , genetics , restriction fragment length polymorphism , gene
Aims: To develop a suite of group‐specific, rRNA‐targeted oligonucleotide scissor probes for the quantitative detection of the predominant bacterial groups within the ruminal microbial community with the rRNA cleavage reaction‐mediated microbial quantification method. Methods and Results: Oligonucleotides that complement the conserved sites of the 16S rRNA of phylogenetically defined groups of bacteria that significantly contribute to the anaerobic fermentation of carbohydrates in ruminal ecosystems were selected from among published probes or were newly designed. For each probe, target‐specific rRNA cleavage was achieved by optimizing the formamide concentration in the reaction mixture. The set of scissor probes was then used to analyse the bacterial community in the rumen fluids of four healthy dairy cows. In the rumen fluid samples, the genera Bacteroides / Prevotella and Fibrobacter and the Clostridium coccoides‐Eubacterium rectale group were detected in abundance, accounting for 44–48%, 2·9–10%, and 9·1–10% of the total 16S rRNA, respectively. The coverage with the probe set was 71–78% of the total bacterial 16S rRNA. Conclusions: The probe set coupled with the sequence‐specific small‐subunit rRNA cleavage method can be used to analyse the structure of a ruminal bacterial community. Significance and Impact of the Study: The probe set developed in this study provides a tool for comprehensive rRNA‐based monitoring of the community members that dominate ruminal ecosystems. As the ruminal microbial community can be perturbed, it is important to track its dynamics by analysing microbiological profiles under specific conditions. The method described here will provide a convenient approach for such tracking.