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Combined molecular ecological and confocal laser scanning microscopic analysis of peat bog methanogen populations

Upton, M, Hill, B., Edwards, C., Saunders, J. R., Ritchie, D. A. and Lloyd, David 2000. Combined molecular ecological and confocal laser scanning microscopic analysis of peat bog methanogen populations. FEMS Microbiology Letters 193 (2) , pp. 275-281. 10.1016/S0378-1097(00)00496-1

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Abstract

Confocal laser scanning microscopy, using fluorescently labelled oligonucleotide probes targeting the 16S rRNA of different physiological groups of methanogens, was used to identify which methanogenic genera were present and to describe their in situ spatial locations in samples taken at different depths from blanket peat bog cores. Total bacterial DNA was also extracted and purified from the samples and used as template for amplification of 16S rRNA and regions of methyl CoM reductase-encoding genes using the polymerase chain reaction, as well as for oligonucleotide hybridisation experiments. These techniques, used in concert, demonstrated that methanogens of several physiological groups were present in highest numbers in the mid regions of 25 cm deep peat cores. Some discrepancies were apparent in the findings of the microscopic and molecular methods, though these may be partially accounted for by the different sensitivities of the techniques employed. The combined approaches used in this study gave an insight into the diversity and distribution of methanogens in peat environments not possible using molecular ecological methods alone.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Uncontrolled Keywords: Methanogen; Peat; Polymerase chain reaction; Oligonucleotide probing; Confocal laser scanning microscopy
Publisher: Wiley-Blackwell
ISSN: 0378-1097
Last Modified: 04 Jun 2017 06:36
URI: http://orca.cf.ac.uk/id/eprint/62707

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