Isolation of isoprene degrading bacteria from soils, development of isoA gene probes and identification of the active isoprene degrading soil community using DNA-stable isotope probing

El Khawand, Myriam, Crombie, Andrew T., Johnston, Antonia, Vavlline, Dmitrii V., McAuliffe, Joseph C., Latone, Jacob A., Primak, Yuliya A., Lee, Sang-Kyu, Whited, Gregg M., McGenity, Terry J. and Murrell, J. Colin (2016) Isolation of isoprene degrading bacteria from soils, development of isoA gene probes and identification of the active isoprene degrading soil community using DNA-stable isotope probing. Environmental Microbiology, 18 (Thematic Issue on Microbial Mutualism and Symbiosis). 2743–2753. ISSN 1462-2912

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Abstract

Emissions of biogenic volatile organic compounds (bVOCs), are an important element in the global carbon cycle, accounting for a significant proportion of fixed carbon. They contribute directly and indirectly to global warming and climate change and have a major effect on atmospheric chemistry. Plants emit isoprene to the atmosphere in similar quantities to emissions of methane from all sources and each account for approximately one third of total VOCs. Although methanotrophs, capable of growth on methane, have been intensively studied, we know little of isoprene biodegradation. Here we report the isolation of two isoprene-degrading strains from the terrestrial environment and describe the design and testing of PCR primers targeting isoA, the gene encoding the active-site component of the conserved isoprene monooxygenase, which are capable of retrieving isoA sequences from isoprene-enriched environmental samples. Stable isotope probing experiments, using biosynthesized 13C-labelled isoprene, identified the active isoprene-degrading bacteria in soil. This study identifies novel isoprene-degrading strains using both culture-dependent and, for the first time, culture-independent methods and provides the tools and foundations for continued investigation of the biogeography and molecular ecology of isoprene-degrading bacteria. This article is protected by copyright. All rights reserved.

Item Type: Article
Additional Information: Volume 18, Thematic Issue: Thematic Issue on Microbial Mutualism and Symbiosis Copyright 2016 The Authors Environmental Microbiology published by Society for Applied Microbiology and John Wiley & Sons Ltd This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution andreproduction in any medium, provided the original work is properly cited.
Faculty \ School: Faculty of Science > School of Environmental Sciences
Depositing User: Pure Connector
Date Deposited: 15 Apr 2016 15:01
Last Modified: 25 Jun 2020 00:00
URI: https://ueaeprints.uea.ac.uk/id/eprint/58287
DOI: 10.1111/1462-2920.13345

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