ArticlePloS one2011
Activation of methanogenesis in arid biological soil crusts despite the presence of oxygen.
Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.
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Who cites it
74 citing papers in PubMed.
- Cultivation and genomic characterization of novel methanogens from arid desert biocrust.ISME communications · 2026Article
- Oxidative adaptations in prokaryotes imply the oxygenic photosynthesis before crown-groupPNAS nexus · 2025Article
- Distinct microbiomes underlie divergent responses of methane emissions from diverse wetland soils to oxygen shifts.ISME communications · 2025Article
- Secondary products and molecular mechanism of calcium oxalate degradation by the strain Azospirillum sp. OX-1.Scientific reports · 2024Article
- Disruption of millipede-gut microbiota in E. pulchripes and G. connexa highlights the limited role of litter fermentation and the importance of litter-associated microbes for nutrition.Communications biology · 2024Article
- Methanogenesis in the presence of oxygenic photosynthetic bacteria may contribute to global methane cycle.Nature communications · 2024Article
- New insights into the coal-associated methane architect: the ancient archaebacteria.Archives of microbiology · 2024Review
- The Selenoproteome as a Dynamic Response Mechanism to Oxidative Stress in Hydrogenotrophic Methanogenic Communities.Environmental science & technology · 2024Article
- Methylotrophy in the Mire: direct and indirect routes for methane production in thawing permafrost.mSystems · 2024Article
- Radioactive waste microbiology: predicting microbial survival and activity in changing extreme environments.FEMS microbiology reviews · 2024Review
- Salt wedges and trapped brines of low-latitude endoreic saline lakes as potential modulators of GHG emission.Scientific reports · 2023Article
- Consider the Anoxic Microsite: Acknowledging and Appreciating Spatiotemporal Redox Heterogeneity in Soils and Sediments.ACS earth & space chemistry · 2023Review
- Reactive Nitrogen Hotspots Related to Microscale Heterogeneity in Biological Soil Crusts.Environmental science & technology · 2022Article
- Impact of Fungal Hyphae on Growth and Dispersal of Obligate Anaerobic Bacteria in Aerated Habitats.mBio · 2022Article
- The sanitary indoor environment-a potential source for intact human-associated anaerobes.NPJ biofilms and microbiomes · 2022Article
- Activity-based, genome-resolved metagenomics uncovers key populations and pathways involved in subsurface conversions of coal to methane.The ISME journal · 2022Article
- Diverse methylotrophic methanogenic archaea cause high methane emissions from seagrass meadows.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- No time to die: Comparative study on preservation protocols for anaerobic fungi.Frontiers in microbiology · 2022Article
- Emission factors for Vietnamese beef cattle manure sun-drying and the effects of drying on manure microbial community.PloS one · 2022Article
- Methane Generation from Anthracite by Fungi and Methanogen Mixed Flora Enriched from Produced Water Associated with the Qinshui Basin in China.ACS omega · 2021Article
14 more citing papers are in PubMed but not listed here.
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Authors and funding
3 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Methanogenesis is traditionally thought to occur only in highly reduced, anoxic environments. Wetland and rice field soils are well known sources for atmospheric methane, while aerated soils are considered sinks. Although methanogens have been detected in low numbers in some aerated, and even in desert soils, it remains unclear whether they are active under natural oxic conditions, such as in biological soil crusts (BSCs) of arid regions. To answer this question we carried out a factorial experiment using microcosms under simulated natural conditions. The BSC on top of an arid soil was incubated under moist conditions in all possible combinations of flooding and drainage, light and dark, air and nitrogen headspace. In the light, oxygen was produced by photosynthesis. Methane production was detected in all microcosms, but rates were much lower when oxygen was present. In addition, the δ(13)C of the methane differed between the oxic/oxygenic and anoxic microcosms. While under anoxic conditions methane was mainly produced from acetate, it was almost entirely produced from H(2)/CO(2) under oxic/oxygenic conditions. Only two genera of methanogens were identified in the BSC-Methanosarcina and Methanocella; their abundance and activity in transcribing the mcrA gene (coding for methyl-CoM reductase) was higher under anoxic than oxic/oxygenic conditions, respectively. Both methanogens also actively transcribed the oxygen detoxifying gene catalase. Since methanotrophs were not detectable in the BSC, all the methane produced was released into the atmosphere. Our findings point to a formerly unknown participation of desert soils in the global methane cycle.
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