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Tree phyllospheres are a habitat for diverse populations of CO-oxidizing bacteria
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Palmer, Jess, Hilton, Sally, Picot, Emma, Bending, G. D. and Schäfer, Hendrik (2021) Tree phyllospheres are a habitat for diverse populations of CO-oxidizing bacteria. Environmental Microbiology, 23 (10). pp. 6309-6327. doi:10.1111/1462-2920.15770 ISSN 1462-2912.
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WRAP-Tree-phyllospheres-habitat-diverse-populations-CO-oxidizing-bacteria-2021.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2175Kb) | Preview |
Official URL: http://dx.doi.org/10.1111/1462-2920.15770
Abstract
Carbon monoxide (CO) is both a ubiquitous atmospheric trace gas and an air pollutant. While aerobic CO-degrading microorganisms in soils and oceans are estimated to remove ~370 Tg of CO per year, the presence of CO-degrading microorganisms in above-ground habitats, such as the phyllosphere, and their potential role in CO cycling remains unknown. CO-degradation by leaf washes of two common British trees, Ilex aquifolium and Crataegus monogyna, demonstrated CO uptake in all samples investigated. Based on the analyses of taxonomic and functional genes, diverse communities of candidate CO-oxidizing taxa were identified, including members of Rhizobiales and Burkholderiales which were abundant in the phyllosphere at the time of sampling. Based on predicted genomes of phyllosphere community members, an estimated 21% of phyllosphere bacteria contained CoxL, the large subunit of CO-dehydrogenase. In support of this, data mining of publicly available phyllosphere metagenomes for genes encoding CO-dehydrogenase subunits demonstrated that, on average, 25% of phyllosphere bacteria contained CO-dehydrogenase gene homologues. A CO-oxidizing Phyllobacteriaceae strain was also isolated from phyllosphere samples which contains genes encoding both CO-dehydrogenase as well as a ribulose-1,5-bisphosphate carboxylase-oxygenase. These results suggest that the phyllosphere supports diverse and potentially abundant CO-oxidizing bacteria, which are a potential sink for atmospheric CO.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QK Botany T Technology > TD Environmental technology. Sanitary engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||
Library of Congress Subject Headings (LCSH): | Trees -- Microbiology, Plants -- Microbiology, Air -- Pollution, Pollution prevention, Pollutants -- Biodegradation, Plant surfaces -- Microbiology, Carbon monoxide | ||||||||
Journal or Publication Title: | Environmental Microbiology | ||||||||
Publisher: | Blackwell | ||||||||
ISSN: | 1462-2912 | ||||||||
Official Date: | October 2021 | ||||||||
Dates: |
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Volume: | 23 | ||||||||
Number: | 10 | ||||||||
Page Range: | pp. 6309-6327 | ||||||||
DOI: | 10.1111/1462-2920.15770 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 27 September 2021 | ||||||||
Date of first compliant Open Access: | 28 September 2021 | ||||||||
RIOXX Funder/Project Grant: |
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