Methane oxidation and response of Methylobacter/Methylosarcina methanotrophs in flooded rice soil amended with urea

Meng, Wei; Qiu, Qiongfen; Qian, Yunxia; Cheng, Lei

doi:10.1016/j.apsoil.2016.01.009

Cited by 16 publications

(17 citation statements)

References 47 publications

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“…This observation is attributed to the high NH4 + concentration and ammonia volatilisation during single addition of the N-rich substrate because methanogenic activity decreases as ammonia volatilisation and NH4 + concentration increase (Hao et al, 2005). The present findings are in agreement with the results of previous studies reporting on the response of CH4 production from soil to different nitrogen fertilisers (Wei et al, 2016). To the authors' knowledge, this is the first report on the relationship between split addition of an N-rich substrate and GHG emissions during composting.…”

Section: Greenhouse Gas Emissionssupporting

confidence: 83%

“…At the same time, delayed addition decreased CH4 emissions as a result of (i) the absence of high temperatures in conjunction with reduced available C and N for the methanogens and (ii) higher methane oxidation due to the similarity between enzymes involved in methane and ammonium oxidation (Wei et al, 2016).…”

Section: Delayed Addition Of N-rich Substratementioning

confidence: 93%

“…On the other hand, the single addition of an N-rich substrate could trigger CH4 emissions due to the occurrence of anaerobic sites, high temperatures and bioavailable C and/or N for methanogenic bacteria. Studies also claim that high NH4 + concentrations reduce methane oxidation due to the enzymatic similarity between methane and ammonium oxidation (Wei et al, 2016). However, no studies have been conducted to investigate the relationship between the timing of N-rich substrate addition and GHG emissions from composting.…”

Section: Introductionmentioning

confidence: 99%

“…100/0 and 80/20 treatments) increased the cumulative CH4 emissions from composting, as hypothesised, and the effect was more pronounced with the substrates containing sawdust. The high CH4 production during early additions of the N-rich substrate could be explained by (i) the high load of materials which results in more anaerobic pockets in the pile, (ii) the presence of high temperatures in conjunction with high available C and N for the methanogens which increases CH4 production, and (iii) low methane oxidation due to the similarity between enzymes involved in methane and ammonium oxidation (Wei et al, 2016).…”

Section: Greenhouse Gas Emissionsmentioning

confidence: 99%

“…On the other hand, late addition of an N-rich substrate could reduce CH4 production due to the low temperatures for methanogenic microbes. Furthermore, high NH4 + concentrations during early addition might reduce methane oxidation in the thermophilic phase due to the enzymatic similarity between methane and ammonium oxidation (Hao et al, 2005;Wei et al, 2016).…”

Section: Vermicomposting As a Low-cost Strategy For Reducing N Lossesmentioning

confidence: 99%

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Closing the nutrient loops in (peri-)urban farming systems through composting

Nigussie

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Section: Greenhouse Gas Emissionssupporting

confidence: 83%

Section: Delayed Addition Of N-rich Substratementioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Greenhouse Gas Emissionsmentioning

confidence: 99%

Section: Vermicomposting As a Low-cost Strategy For Reducing N Lossesmentioning

confidence: 99%

See 3 more Smart Citations

Closing the nutrient loops in (peri-)urban farming systems through composting

Nigussie

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Nitrate promotes the transfer of methane‐derived carbon from the methanotroph Methylobacter sp. to the methylotroph Methylotenera sp. in eutrophic lake water

Grinsven

Damsté

Harrison

et al. 2020

Limnology & Oceanography

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Eutrophic lakes are major contributors to global aquatic methane emissions. Methanotrophy, performed by methane oxidizing bacteria, results in the production of biomass, fermentation products and/or CO 2 , making methane-derived carbon available to non-methanotrophic organisms. Methanotrophs can co-occur with methylotrophs which are expected to consume methane-derived carbon. However, it is unknown if this interaction requires cell-to-cell contact, whether physicochemical factors affect this interaction, and what role this interaction may play in ecosystems and biogeochemical cycling in lakes. Here, we performed incubations of an enrichment culture obtained from a eutrophic lake with 13 C-labeled methane, revealing the transfer of methane-derived carbon from the methanotroph Methylobacter sp. to a methylotroph of the genus Methylotenera. These microorganisms occurred both in mixed clusters and as single cells, indicating that their interaction does not require physical cell contact. In addition, the carbon transfer between the partners is dependent on the presence of nitrate, which is potentially used by Methylotenera sp. and in turn may affect the methane oxidation rate of Methylobacter sp. This interaction, and its dependence on nitrate, may have important implications for the carbon cycle in eutrophic lakes worldwide.

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Potential of biogenic methane for pilot-scale fermentation ex situ with lump anthracite and the changes of methanogenic consortia

Yang

Chen

et al. 2018

Journal of Industrial Microbiology and Biotechnology

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Pilot-scale fermentation is one of the important processes for achieving industrialization of biogenic coalbed methane (CBM), although the mechanism of biogenic CBM remains unknown. In this study, 16 samples of formation water from CBM production wells were collected and enriched for methane production, and the methane content was between 3.1 and 21.4%. The formation water of maximum methane production was used as inoculum source for pilot-scale fermentation. The maximum methane yield of the pilot-scale fermentation with lump anthracite amendment reached 13.66 μmol CH/mL, suggesting that indigenous microorganisms from formation water degraded coal to produce methane. Illumina high-throughput sequencing analysis revealed that the bacterial and archaeal communities in the formation water sample differed greatly from the methanogic water enrichment culture. The hydrogenotrophic methanogen Methanocalculus dominated the formation water. Acetoclastic methanogens, from the order Methanosarcinales, dominated coal bioconversion. Thus, the biogenic methanogenic pathway ex situ cannot be simply identified according to methanogenic archaea in the original inoculum. Importantly, this study was the first time to successfully simulate methanogenesis in large-capacity fermentors (160 L) with lump anthracite amendment, and the result was also a realistic case for methane generation in pilot-scale ex situ.

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Methane oxidation and response of Methylobacter/Methylosarcina methanotrophs in flooded rice soil amended with urea

Cited by 16 publications

References 47 publications

Closing the nutrient loops in (peri-)urban farming systems through composting

Closing the nutrient loops in (peri-)urban farming systems through composting

Nitrate promotes the transfer of methane‐derived carbon from the methanotroph Methylobacter sp. to the methylotroph Methylotenera sp. in eutrophic lake water

Potential of biogenic methane for pilot-scale fermentation ex situ with lump anthracite and the changes of methanogenic consortia

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