دورية أكاديمية
Maintaining grass coverage increases methane uptake in Amazonian pastures, with a reduction of methanogenic archaea in the rhizosphere.
| العنوان: | Maintaining grass coverage increases methane uptake in Amazonian pastures, with a reduction of methanogenic archaea in the rhizosphere. |
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| المؤلفون: | Fonseca de Souza L; Center for Nuclear Energy in Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil; Department of Microbiology, University of Massachusetts, Amherst, MA, USA. Electronic address: leandro_fonseca@alumni.usp.br., Alvarez DO; Center for Nuclear Energy in Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil; Applied Soil Ecology Lab, School of Environmental Sciences, University of Guelph, Guelph, ON, Canada., Domeignoz-Horta LA; Department of Microbiology, University of Massachusetts, Amherst, MA, USA; Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland., Gomes FV; Center for Nuclear Energy in Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil., de Souza Almeida C; Center for Nuclear Energy in Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil., Merloti LF; Center for Nuclear Energy in Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil., Mendes LW; Center for Nuclear Energy in Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil., Andreote FD; Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, SP, Brazil., Bohannan BJM; Institute of Ecology and Evolution, University of Oregon, Eugene, OR, USA., Mazza Rodrigues JL; Department of Land, Air and Water Resources, University of California Davis, CA, USA., Nüsslein K; Department of Microbiology, University of Massachusetts, Amherst, MA, USA., Tsai SM; Center for Nuclear Energy in Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil. |
| المصدر: | The Science of the total environment [Sci Total Environ] 2022 Sep 10; Vol. 838 (Pt 2), pp. 156225. Date of Electronic Publication: 2022 May 24. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0330500 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1026 (Electronic) Linking ISSN: 00489697 NLM ISO Abbreviation: Sci Total Environ Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Amsterdam, Elsevier. |
| مواضيع طبية MeSH: | Archaea* , Methane*, Animals ; Cattle ; Poaceae/genetics ; RNA, Ribosomal, 16S/genetics ; Rhizosphere ; Soil/chemistry ; Soil Microbiology |
| مستخلص: | Cattle ranching is the largest driver of deforestation in the Brazilian Amazon. The rainforest-to-pasture conversion affects the methane cycle in upland soils, changing it from sink to source of atmospheric methane. However, it remains unknown if management practices could reduce the impact of land-use on methane cycling. In this work, we evaluated how pasture management can regulate the soil methane cycle either by maintaining continuous grass coverage on pasture soils, or by liming the soil to amend acidity. Methane fluxes from forest and pasture soils were evaluated in moisture-controlled greenhouse experiments with and without grass cover (Urochloa brizantha cv. Marandu) or liming. We also assessed changes in the soil microbial community structure of both bare (bulk) and rhizospheric pasture soils through high throughput sequencing of the 16S rRNA gene, and quantified the methane cycling microbiota by their respective marker genes related to methane generation (mcrA) or oxidation (pmoA). The experiments used soils from eastern and western Amazonia, and concurrent field studies allowed us to confirm greenhouse data. The presence of a grass cover not only increased methane uptake by up to 35% in pasture soils, but also reduced the abundance of the methane-producing community. In the grass rhizosphere this reduction was up to 10-fold. Methane-producing archaea belonged to the genera Methanosarcina sp., Methanocella sp., Methanobacterium sp., and Rice Cluster I. Further, we showed that soil liming to increasing pH compromised the capacity of forest and pasture soils to be a sink for methane, and instead converted formerly methane-consuming forest soils to become methane sources in only 40-80 days. Liming reduced the relative abundance of Beijerinckiacea family in forest soils, which account for many known methanotrophs. Our results demonstrate that pasture management that maintains grass coverage can mitigate soil methane emissions, compared to bare (bulk) pasture soil. Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2022 Elsevier B.V. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Climate change; Environmental microbiology; Methanogenic archaea; Methanotrophy; Soil methane cycling |
| المشرفين على المادة: | 0 (RNA, Ribosomal, 16S) 0 (Soil) OP0UW79H66 (Methane) |
| تواريخ الأحداث: | Date Created: 20220527 Date Completed: 20220616 Latest Revision: 20220616 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1016/j.scitotenv.2022.156225 |
| PMID: | 35623507 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1879-1026 |
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| DOI: | 10.1016/j.scitotenv.2022.156225 |