Effect of substrate quality on the N uptake routes of soil microorganisms in different soil depths
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- 作者：Johanna Pinggeraa ; b ; Daniel Geisselera ; c ; Hans-Peter Piephod ; Rainer Georg Joergensenb ; Bernard Ludwiga ; bludwig@uni-kassel.de" class="auth_mail" title="E-mail the corresponding author
- 关键词：Amino acid mineralization ; Direct route ; MIT route ; Gross N mineralization ; Protease activity ; Soil depth
- 刊名：Pedobiologia
- 出版年：2015
- 出版时间：September-November 2015
- 年：2015
- 卷：58
- 期：5-6
- 页码：211-218
- 全文大小：1124 K
文摘
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The N uptake route of soil microorganisms was studied using corn residues with different C/N ratios and inorganic N in different soil depths.
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The direct uptake route (direct uptake of simple organic molecules into the cell) was the dominant N uptake route.
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The direct uptake route was more relevant in the surface soil than in the subsoil.
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The direct uptake of organic N was especially relevant for residues with a high C to N ratio.