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Hydroxylamine released by nitrifying microorganisms is a precursor for HONO emission from drying soils

Ermel, M ; Behrendt, T ; Oswald, R ; Derstroff, B ; Wu, D ; Hohlmann, S ; Stönner, C ; Pommerening-Röser, A ; Könneke, M ; Williams, J ; Meixner, F X ; Andreae, M O ; Trebs, I ; Sörgel, M

Scientific reports, 2018-01, Vol.8 (1), p.1877-8, Article 1877 [Periódico revisado por pares]

England: Nature Publishing Group

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Hydroxylamine released by nitrifying microorganisms is a precursor for HONO emission from drying soils
Autor: Ermel, M ; Behrendt, T ; Oswald, R ; Derstroff, B ; Wu, D ; Hohlmann, S ; Stönner, C ; Pommerening-Röser, A ; Könneke, M ; Williams, J ; Meixner, F X ; Andreae, M O ; Trebs, I ; Sörgel, M
Assuntos: Ammonia ; Ammonia - metabolism ; Ammonia-oxidizing bacteria ; Archaea - metabolism ; Atmosphere ; Bacteria ; Bacteria - metabolism ; Drying ; Emissions ; Fungi ; Gases - metabolism ; Hydroxyl Radical - metabolism ; Hydroxyl radicals ; Hydroxylamine ; Hydroxylamine - metabolism ; Nitrification - physiology ; Nitrifying bacteria ; Nitrous acid ; Nitrous Acid - metabolism ; Oxidation-Reduction ; Soil ; Soil Microbiology ; Water vapor
É parte de: Scientific reports, 2018-01, Vol.8 (1), p.1877-8, Article 1877
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Nitrous acid (HONO) is an important precursor of the hydroxyl radical (OH), the atmosphere´s primary oxidant. An unknown strong daytime source of HONO is required to explain measurements in ambient air. Emissions from soils are one of the potential sources. Ammonia-oxidizing bacteria (AOB) have been identified as possible producers of these HONO soil emissions. However, the mechanisms for production and release of HONO in soils are not fully understood. In this study, we used a dynamic soil-chamber system to provide direct evidence that gaseous emissions from nitrifying pure cultures contain hydroxylamine (NH OH), which is subsequently converted to HONO in a heterogeneous reaction with water vapor on glass bead surfaces. In addition to different AOB species, we found release of HONO also in ammonia-oxidizing archaea (AOA), suggesting that these globally abundant microbes may also contribute to the formation of atmospheric HONO and consequently OH. Since biogenic NH OH is formed by diverse organisms, such as AOB, AOA, methane-oxidizing bacteria, heterotrophic nitrifiers, and fungi, we argue that HONO emission from soil is not restricted to the nitrifying bacteria, but is also promoted by nitrifying members of the domains Archaea and Eukarya.
Editor: England: Nature Publishing Group
Idioma: Inglês

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Hydroxylamine released by nitrifying microorganisms is a precursor for HONO emission from drying soils

Ermel, M ; Behrendt, T ; Oswald, R ; Derstroff, B ; Wu, D ; Hohlmann, S ; Stönner, C ; Pommerening-Röser, A ; Könneke, M ; Williams, J ; Meixner, F X ; Andreae, M O ; Trebs, I ; Sörgel, M

England: Nature Publishing Group

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