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Kroeger ME, Meredith LK, Meyer KM, Webster KD, de Camargo PB, de Souza LF, Tsai SM, van Haren J, Saleska S, Bohannan BJM, Rodrigues JLM, Berenguer E, Barlow J, Nüsslein K. Rainforest-to-pasture conversion stimulates soil methanogenesis across the Brazilian Amazon. THE ISME JOURNAL 2021; 15:658-672. [PMID: 33082572 PMCID: PMC8027882 DOI: 10.1038/s41396-020-00804-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 09/03/2020] [Accepted: 10/02/2020] [Indexed: 01/30/2023]
Abstract
The Amazon rainforest is a biodiversity hotspot and large terrestrial carbon sink threatened by agricultural conversion. Rainforest-to-pasture conversion stimulates the release of methane, a potent greenhouse gas. The biotic methane cycle is driven by microorganisms; therefore, this study focused on active methane-cycling microorganisms and their functions across land-use types. We collected intact soil cores from three land use types (primary rainforest, pasture, and secondary rainforest) of two geographically distinct areas of the Brazilian Amazon (Santarém, Pará and Ariquemes, Rondônia) and performed DNA stable-isotope probing coupled with metagenomics to identify the active methanotrophs and methanogens. At both locations, we observed a significant change in the composition of the isotope-labeled methane-cycling microbial community across land use types, specifically an increase in the abundance and diversity of active methanogens in pastures. We conclude that a significant increase in the abundance and activity of methanogens in pasture soils could drive increased soil methane emissions. Furthermore, we found that secondary rainforests had decreased methanogenic activity similar to primary rainforests, and thus a potential to recover as methane sinks, making it conceivable for forest restoration to offset greenhouse gas emissions in the tropics. These findings are critical for informing land management practices and global tropical rainforest conservation.
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Affiliation(s)
- Marie E. Kroeger
- grid.266683.f0000 0001 2184 9220Department of Microbiology, University of Massachusetts Amherst, Amherst, MA USA ,grid.148313.c0000 0004 0428 3079Present Address: Bioenergy and Biome Sciences, Los Alamos National Laboratory, Los Alamos, NM USA
| | - Laura K. Meredith
- grid.134563.60000 0001 2168 186XSchool of Natural Resources and the Environment, University of Arizona, Tucson, AZ USA ,grid.134563.60000 0001 2168 186XBiosphere 2, University of Arizona, Tucson, AZ USA
| | - Kyle M. Meyer
- grid.170202.60000 0004 1936 8008Institute of Ecology and Evolution, University of Oregon, Eugene, OR USA ,grid.47840.3f0000 0001 2181 7878Department of Integrative Biology, University of California–Berkeley, Berkeley, CA USA
| | - Kevin D. Webster
- grid.423138.f0000 0004 0637 3991Planetary Science Institute, Tucson, AZ USA
| | - Plinio Barbosa de Camargo
- grid.11899.380000 0004 1937 0722Center for Nuclear Energy in Agriculture, University of São Paulo, São Paulo, SP Brazil
| | - Leandro Fonseca de Souza
- grid.11899.380000 0004 1937 0722Center for Nuclear Energy in Agriculture, University of São Paulo, São Paulo, SP Brazil
| | - Siu Mui Tsai
- grid.11899.380000 0004 1937 0722Center for Nuclear Energy in Agriculture, University of São Paulo, São Paulo, SP Brazil
| | - Joost van Haren
- grid.134563.60000 0001 2168 186XBiosphere 2, University of Arizona, Tucson, AZ USA ,grid.134563.60000 0001 2168 186XHonors College, University of Arizona, Tucson, AZ USA
| | - Scott Saleska
- grid.134563.60000 0001 2168 186XDepartment of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ USA
| | - Brendan J. M. Bohannan
- grid.170202.60000 0004 1936 8008Institute of Ecology and Evolution, University of Oregon, Eugene, OR USA
| | - Jorge L. Mazza Rodrigues
- grid.27860.3b0000 0004 1936 9684Department of Land, Air and Water Resources, University of California, Davis, CA USA
| | - Erika Berenguer
- grid.9835.70000 0000 8190 6402Lancaster Environment Centre, Lancaster University, Lancaster, UK ,grid.4991.50000 0004 1936 8948Environmental Change Institute, University of Oxford, Oxford, UK
| | - Jos Barlow
- grid.9835.70000 0000 8190 6402Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Klaus Nüsslein
- grid.266683.f0000 0001 2184 9220Department of Microbiology, University of Massachusetts Amherst, Amherst, MA USA
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Draft Genome Sequence of Geobacillus sp. Strain LEMMJ02, a Thermophile Isolated from Deception Island, an Active Volcano in Antarctica. Microbiol Resour Announc 2019; 8:8/42/e00920-19. [PMID: 31624166 PMCID: PMC6797531 DOI: 10.1128/mra.00920-19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The thermophilic Geobacillus sp. strain LEMMJ02 was isolated from Fumarole Bay sediment on Deception Island, an active Antarctic volcano. Here, we report the draft genome of LEMMJ02, which consists of 3,160,938 bp with 52.8% GC content and 3,523 protein-coding genes.
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Ghazaryan A, Blbulyan S, Poladyan A, Trchounian A. Redox stress in geobacilli from geothermal springs: Phenomenon and membrane-associated response mechanisms. Bioelectrochemistry 2015; 105:1-6. [DOI: 10.1016/j.bioelechem.2015.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 04/08/2015] [Indexed: 10/23/2022]
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