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Microorganisms
Volume 9
Issue 5
10.3390/microorganisms9051024
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Article

Isoprene-Degrading Bacteria from Soils Associated with Tropical Economic Crops and Framework Forest Trees

by
Toungporn Uttarotai
1,2,3,
Boyd A. McKew
3,
Farid Benyahia
3,
J. Colin Murrell
4,
Wuttichai Mhuantong
5,
Sunanta Wangkarn
6,
Thararat Chitov
1,7,
Sakunnee Bovonsombut
1,7,* and
Terry J. McGenity
3,*
1
Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
2
Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand
3
School of Life Sciences, University of Essex, Colchester CO4 3SQ, UK
4
School of Environmental Sciences, Norwich Research Park, University of East Anglia, Norwich NR4 7TJ, UK
5
Enzyme Technology Research Team, Biorefinery and Bioproduct Technology Research Group, National Center for Genetic Engineering and Biotechnology, Pathumthani 12120, Thailand
6
Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
7
Environmental Science Research Center (ESRC), Chiang Mai University, Chiang Mai 50200, Thailand
*
Authors to whom correspondence should be addressed.
Academic Editor: Iris Bruchhaus
Microorganisms 2021, 9(5), 1024; https://doi.org/10.3390/microorganisms9051024
Received: 21 April 2021 / Revised: 1 May 2021 / Accepted: 4 May 2021 / Published: 10 May 2021
(This article belongs to the Section Environmental Microbiology)
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Abstract

Isoprene, a volatile hydrocarbon emitted largely by plants, plays an important role in regulating the climate in diverse ways, such as reacting with free radicals in the atmosphere to produce greenhouse gases and pollutants. Isoprene is both deposited and formed in soil, where it can be consumed by some soil microbes, although much remains to be understood about isoprene consumption in tropical soils. In this study, isoprene-degrading bacteria from soils associated with tropical plants were investigated by cultivation and cultivation-independent approaches. Soil samples were taken from beneath selected framework forest trees and economic crops at different seasons, and isoprene degradation in soil microcosms was measured after 96 h of incubation. Isoprene losses were 4–31% and 15–52% in soils subjected to a lower (7.2 × 105 ppbv) and a higher (7.2 × 106 ppbv) concentration of isoprene, respectively. Sequencing of 16S rRNA genes revealed that bacterial communities in soil varied significantly across plant categories (framework trees versus economic crops) and the presence of isoprene, but not with isoprene concentration or season. Eight isoprene-degrading bacterial strains were isolated from the soils and, among these, four belong to the genera Ochrobactrum, Friedmanniella, Isoptericola and Cellulosimicrobium, which have not been previously shown to degrade isoprene. View Full-Text
Keywords: isoprene; volatile hydrocarbon; isoprene degradation; bacterial communities; isoprene-degrading bacteria; tropical soils; economic crops; framework forest trees isoprene; volatile hydrocarbon; isoprene degradation; bacterial communities; isoprene-degrading bacteria; tropical soils; economic crops; framework forest trees
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MDPI and ACS Style

Uttarotai, T.; McKew, B.A.; Benyahia, F.; Murrell, J.C.; Mhuantong, W.; Wangkarn, S.; Chitov, T.; Bovonsombut, S.; McGenity, T.J. Isoprene-Degrading Bacteria from Soils Associated with Tropical Economic Crops and Framework Forest Trees. Microorganisms 2021, 9, 1024. https://doi.org/10.3390/microorganisms9051024

AMA Style

Uttarotai T, McKew BA, Benyahia F, Murrell JC, Mhuantong W, Wangkarn S, Chitov T, Bovonsombut S, McGenity TJ. Isoprene-Degrading Bacteria from Soils Associated with Tropical Economic Crops and Framework Forest Trees. Microorganisms. 2021; 9(5):1024. https://doi.org/10.3390/microorganisms9051024

Chicago/Turabian Style

Uttarotai, Toungporn, Boyd A. McKew, Farid Benyahia, J. C. Murrell, Wuttichai Mhuantong, Sunanta Wangkarn, Thararat Chitov, Sakunnee Bovonsombut, and Terry J. McGenity. 2021. "Isoprene-Degrading Bacteria from Soils Associated with Tropical Economic Crops and Framework Forest Trees" Microorganisms 9, no. 5: 1024. https://doi.org/10.3390/microorganisms9051024

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