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  Nitric oxide emission response to soil moisture is linked to transcriptional activity of functional microbial groups

Behrendt, T., Braker, G., Song, G., Pommerenke, B., & Dorsch, P. (2017). Nitric oxide emission response to soil moisture is linked to transcriptional activity of functional microbial groups. Soil Biology and Biochemistry, 115, 337-345. doi:10.1016/j.soilbio.2017.08.006.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-556C-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-556D-A
Genre: Journal Article

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 Creators:
Behrendt, Thomas1, Author              
Braker, Gesche, Author
Song, Guozheng, Author
Pommerenke, Bianka, Author
Dorsch, Peter, Author
Affiliations:
1Department Biogeochemical Processes, Prof. S. E. Trumbore, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497752              

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 Abstract: Numerous studies have shown that soil moisture controls NO flux from soils. Less is known, however, to what extent microbial N-cycling mediates this control. Does soil moisture control NO release primarily by affecting the physical gas exchange between soil and atmosphere, by modulating microbial activities involved in biotic NO turnover, or by both? Using a novel dynamic chamber system for high-resolution measurement of NO release, we found one or several soil-specific maxima of NO release during dry-out experiments in different soils. A mid-latitude arable soil displayed a single maximum at 0.10 water holding capacity (whc), whereas a dryland farming and a rice paddy soil showed two maxima at 0.65/0.10 and 0.90/0.10 whc, respectively. Transcription of nirS genes in the dryland soil at 0.65 whc was low, but larger than at 0.10 whc, while transcriptional activity of archaeal ammonia oxidizers showed the opposite pattern with higher activity at 0.10 whc, suggesting biogenic NO production at low soil moisture. Our study is a first attempt to link NO emission to soil moisture responses of different microbial groups.

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 Dates: 2017-08-032017-09-122017
 Publication Status: Published in print
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 Identifiers: Other: BGC2763
DOI: 10.1016/j.soilbio.2017.08.006
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Title: Soil Biology and Biochemistry
  Other : Soil Biol. Biochem.
Source Genre: Journal
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Publ. Info: Amsterdam [u.a.] : Elsevier
Pages: - Volume / Issue: 115 Sequence Number: - Start / End Page: 337 - 345 Identifier: ISSN: 0038-0717
CoNE: /journals/resource/954925445690