Ethylene oxidation, atmospheric methane consumption, and ammonium oxidation in temperate volcanic forest soils

Xu, Xingkai; Inubushi, Kazuyuki

doi:10.1007/s00374-008-0324-0

Cited by 16 publications

(18 citation statements)

References 26 publications

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“…The initial methane oxidation rate was determined using the methane sampling times from 0 to 26 h (Steenbergh et al, 2010), and the rates were obtained by dividing the CH 4 oxidation with incubation time (Xu and Inubushi, 2009). Lineweaver-Burk equation was used to determine the kinetic parameters of methane oxidation:…”

Section: Methodsmentioning

confidence: 99%

Kinetics of methane oxidation in selected mineral soils

Walkiewicz¹,

Bulak²,

Brzezińska³

et al. 2012

International Agrophysics

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A b s t r a c t.The kinetic parameters of methane oxidation in three mineral soils were measured under laboratory conditions. Incubations were preceded by a 24-day preincubation with 10% vol. of methane. All soils showed potential to the consumption of added methane. None of the soils, however, consumed atmospheric CH 4 . Methane oxidation followed the Michaelis-Menten kinetics, with relatively low values of parameters for Eutric Cambisol, while high values for Haplic Podzol, and especially for Mollic Gleysol which showed the highest methanotrophic activity and much lower affinity to methane. The high values of parameters for methane oxidation are typical for organic soils and mineral soils from landfill cover. The possibility of the involvement of nitrifying microorganisms, which inhabit the ammonia-fertilized agricultural soils should be verified.K e y w o r d s: soil, methane oxidation, kinetic parameters, methanotrophic activity

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Section: Methodsmentioning

confidence: 99%

Kinetics of methane oxidation in selected mineral soils

Walkiewicz¹,

Bulak²,

Brzezińska³

et al. 2012

International Agrophysics

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“…After each sampling, the head space was replaced with 1 ml of high purity N 2 to maintain the pressure equilibrium. CH 4 oxidation rates were calculated from the linear decrease (R 2 >0.95, P<0.001) of CH 4 in the headspace over time, and were presented as nanomoles of CH 4 oxidized per gram (dry weight) per day (Xu and Inubushi 2009). …”

Section: Methane Oxidation Ratementioning

confidence: 99%

Pyrene effects on methanotroph community and methane oxidation rate, tested by dose–response experiment and resistance and resilience experiment

2010

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Purpose Methanotrophs are an important group of bacteria that can metabolize methane. Polycyclic aromatic hydrocarbons (PAHs) are widespread contaminants and present in all ecosystems. We hypothesize that PAHs may affect methanotrophs and methane oxidation. In this study, we assessed dose-response curves for the inhibition of methane oxidation and methanotrophs diversity by pyrene, and resistance and resilience of soil methane oxidation rate and methanotrophs composition in response to pyrene contamination. Material and methods Methanotrophic bacterial diversity was determined by terminal restriction fragment length polymorphism analysis of the pmoA gene, while methanotrophs composition was assessed by cloning and sequencing of the pmoA gene. Sequences with 98% or more identity were considered as the same operational taxonomic unit (OTU). The pyrene concentration at which methane oxidation decreased by 50%, as compared to the non-spiked control soil (EC 50 ), was determined. Both EC 50 concentration and 500 mgkg −1 of pyrene were applied as disturbances in the resistance and resilience experiment. Resistance and resilience were determined 1 and 40 days, respectively, after spiking pyrene.Results and discussion Methane oxidation rate decreased with increasing pyrene concentrations and the EC 50 value was 22.0 mgkg −1 . Methanotrophic bacterial community diversity decreased in 200 and 500 mgkg −1 pyrene treatments, and methanotroph community structure shifts occurred in 100, 200, and 500 mgkg −1 pyrene treatments. Methane oxidation was neither resistant nor resilient to pyrene disturbance. However, methane oxidation of soil with 22.0 mgkg −1 pyrene disturbance recovered to some extent after 40 days incubation. There were five OTUs identified in the control samples, but the number of OTUs increased 1 day after the addition of 22 mgkg −1 of pyrene. It suggests that a low level of disturbance may increase diversity. Forty days after 500 mgkg −1 of pyrene disturbance, only one OTU belonging to Methylocaldum was detected. The resilience of Methylocaldum to a high level of pyrene could be due to the high genomic GC content, which reduces the frequency of insertion by pyrene into the DNA duplex. In addition, we found that the number of OTUs decreased in all treatments after the 40-day incubation. Conclusions Methane oxidation activity was more sensitive to pyrene than the methanotroph community structure, but could recover under a low level of pyrene. Significant decrease in diversity and shift in species composition occurred only after severe perturbation. A low level of disturbance could increase biodiversity, while a high level of disturbance could decrease it.

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“…Further studies are needed to confirm that C 2 H 4 production from forest topsoil gave a larger Q 10 value than the soil CH 4 production under oxic conditions. Together the high proportion of heavy rainfall in summer in northeastern China, and the interaction between the C 2 H 4 and CH 4 consumption by forest soils [9][10][11] , the results would promote one to study the temperature effects on C 2 H 4 cycling in temperate forest topsoil and its interaction with the CH 4 fluxes from forest soils in situ.…”

Section: Concluding Remarkmentioning

confidence: 94%

“…Of addition interest were the differences in both responses and the mechanisms involved. Together the interaction between C 2 H 4 and CH 4 consumption by soils [9][10][11] , the results would improve one to study the effects of temperature on C 2 H 4 cycling in forest topsoil and its interaction with CH 4 fluxes from forest soils in situ.…”

mentioning

confidence: 94%

“…Although capacities of transporting CH 4 and oxygen towards the underlying soil are considered main factors affecting soil atmospheric CH 4 oxidation [8] , cycling of such C 2 H 4 in forest topsoil can to some extent affect the net flux of CH 4 in the field [9,10] . The CH 4 consumption activity in temperate forest topsoil is significantly reduced by addition of 2-3 µL L −1 C 2 H 4 in the headspace gases [9,11] , which can be easily produced from forest topsoil under short-term anoxic conditions [1,10] . The change in temperature and the status of oxygen can affect the activities of soil microorganisms responsible for C 2 H 4 and CH 4 production.…”

mentioning

confidence: 99%

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Ethylene oxidation, atmospheric methane consumption, and ammonium oxidation in temperate volcanic forest soils

Cited by 16 publications

References 26 publications

Kinetics of methane oxidation in selected mineral soils

Kinetics of methane oxidation in selected mineral soils

Pyrene effects on methanotroph community and methane oxidation rate, tested by dose–response experiment and resistance and resilience experiment

Temperature effects on ethylene and methane production from temperate forest soils

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