Conventional methanotrophs are responsible for atmospheric methane oxidation in paddy soils.
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TLDR
The induction of HAMO activity occurred only after the rapid growth of methanotrophic populations, and a metatranscriptome-wide association study suggests that the concurrent high- and low-affinity methane oxidation was catalysed by known meethanotrophs rather than by the proposed novel atmospheric methane oxidizers.Abstract:
Soils serve as the biological sink of the potent greenhouse gas methane with exceptionally low concentrations of ∼1.84 p.p.m.v. in the atmosphere. The as-yet-uncultivated methane-consuming bacteria have long been proposed to be responsible for this 'high-affinity' methane oxidation (HAMO). Here we show an emerging HAMO activity arising from conventional methanotrophs in paddy soil. HAMO activity was quickly induced during the low-affinity oxidation of high-concentration methane. Activity was lost gradually over 2 weeks, but could be repeatedly regained by flush-feeding the soil with elevated methane. The induction of HAMO activity occurred only after the rapid growth of methanotrophic populations, and a metatranscriptome-wide association study suggests that the concurrent high- and low-affinity methane oxidation was catalysed by known methanotrophs rather than by the proposed novel atmospheric methane oxidizers. These results provide evidence of atmospheric methane uptake in periodically drained ecosystems that are typically considered to be a source of atmospheric methane.read more
Citations
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Journal ArticleDOI
Control Effects of Chelonus munakatae Against Chilo suppressalis and Impact on Greenhouse Gas Emissions From Paddy Fields.
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Soil aeration rather than methanotrophic community drives methane uptake under drought in a subtropical forest.
Xiaoqi Zhou,Mingyue Zhang,Sascha Krause,Xuelei Bu,Xinyun Gu,Zhiying Guo,Zhongjun Jia,Xuhui Zhou,Xihua Wang,Xiao-Yong Chen,Yanfen Wang +10 more
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Book ChapterDOI
Environmental Applications of Methanotrophs
TL;DR: This chapter provides an extensive overview of scientific and engineering breakthroughs geared towards practical applications of methanotroph biotechnology in managing impending environmental problems.
Estimation of Greenhouse Gas Emission in Rice Paddy Soil Under Slow Released N Fertilizer Application: Annual Investigation
TL;DR: Gwon et al. as discussed by the authors evaluated the influence of slow N fertilizer on effective greenhouse gas (GHG) reduction and found that slow released N fertilizer can mitigate N2O emissions by reducing N lost to the environment.
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