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  Nitrous oxide (N2O) release by Streptomyces nitrosporeus in a sandy loam soil as affected by pO(2), pH and amount of easily decomposable organic carbon

Wenzhöfer, F., Kriszt, B., Benckiser, G., & Ottow, J. (1997). Nitrous oxide (N2O) release by Streptomyces nitrosporeus in a sandy loam soil as affected by pO(2), pH and amount of easily decomposable organic carbon. Zeitschrift für Pflanzenernährung und Bodenkunde, 160(2), 201-208. doi:10.1002/jpln.19971600213.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-0005-0A71-1 版のパーマリンク: https://hdl.handle.net/21.11116/0000-0005-0A72-0
資料種別: 学術論文
その他 : Lachgas(N2O)‐Freisetzung durch Streptomyces nitrosporeus in einem sandigen Lehmboden in Abhängigkeit von pO2, pH und Angebot an leicht mineralisierbarem Kohlenstoff

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Wenzhoefer_1997.pdf (出版社版), 758KB
 
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 作成者:
Wenzhöfer, Frank1, 著者           
Kriszt, B, 著者
Benckiser, G, 著者
Ottow, JCG, 著者
所属:
1HGF MPG Joint Research Group for Deep Sea Ecology & Technology, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481702              

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 要旨: In model experiments under defined conditions (80%WHC, 300 mu g nitrate-N g(-1) dry soil, 30 degrees C) the effect of pO(2), pH and addition of easily decomposable organic matter on nitrous oxide production by Streptomyces nitrosporeus DSM 40023 from a sterilized sandy loam soil was studied. This streptomycete reduces nitrate to N2O but not to N-2. The strain was inoculated into a sterilized sandy loam sail (pH 6), enriched with nitrate and incubated at approximately 20 and 10% (v/v) O-2 for 26 days. In another series of experiments the pH was increased with NaOH-solution up to pH 7 or the soil was enriched with pulverized leaves (1%) to increase mineralization activity and the demand for electron accepters. In the headspace the concentration of O-2, CO2 and N2O was analysed by GC. The soil concentration of NO3-, NO2- and NH4+ was measured as well as the pH value. The population density was determined by the plate count method. At a decreased oxygen concentration of about 2.5% (v/v) in the headspace, S. nitrosporeus increased the release of N2O. In the experiments with an initial oxygen concentration of approximately 20% (v/v) this threshold of about 2.5%/(v/v) O-2 was hardly reached and consequently only little N2O was produced. Apparently, S. nitrosporeus uses O-2 in preference to nitrate, which is characteristical of nitrate respiration. A pH increase from pH 6 to 7 reduced the lag phase significantly and increased the rate of oxygen consumption, CO2 release and N2O production. Maximum nitrous oxide production was reached after 13 days. The result indicated that streptomycetes Like S. nitrosporeus may use nitrate, rate alternativly to O-2 to maintain energy conservation (ATP synthesis) with the release of N2O. So far, nothing is known about the role of streptomycetes in contributing to N2O production in natural soils.

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言語: eng - English
 日付: 1997
 出版の状態: 出版
 ページ: 8
 出版情報: -
 目次: -
 査読: -
 識別子(DOI, ISBNなど): ISI: A1997WW44600013
DOI: 10.1002/jpln.19971600213
 学位: -

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出版物名: Zeitschrift für Pflanzenernährung und Bodenkunde
種別: 学術雑誌
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出版社, 出版地: Weinheim : Verlag Chemie
ページ: - 巻号: 160 (2) 通巻号: - 開始・終了ページ: 201 - 208 識別子(ISBN, ISSN, DOIなど): ISSN: 0044-3263
CoNE: https://pure.mpg.de/cone/journals/resource/110992357376108