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Open Access Green as soon as Postprint is submitted to ZB.
Abundance of ammonia oxidizing microbes and denitrifiers in different soil horizons of an agricultural soil in relation to the cultivated crops.
Biol. Fertil. Soils 49, 1243-1246 (2013)
The role of subsoils and their microbial communities for the nutrient supply for plants is to a large extent unknown, especially in comparison to well investigated topsoil layers. Therefore, in this study, the influence of three different plant species with different rooting systems and different N uptake strategies on ammonium and nitrate levels and microbial communities involved in ammonia oxidation and denitrification was investigated in different soil horizons. Overall, our results show a higher genetic potential for both processes in topsoils than in subsoils independent of the present plant. Although we found accumulation of N in top and subsoils in plots with legumes, we could not observe an impact of the higher nitrate content on the genetic potential of denitrification and ammonia oxidation. However, differences in the ratios of ammonia oxidizing archaea to bacteria and also between denitrifying bacteria harboring genes for copper- (nirK) or cytochrome- (nirS) dependent nitrite reductase in top and subsoil samples reveal different ecophysiologies of microbes involved in N turnover in top and subsoil habitats.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Ammonia oxidation; Arable soil; Microbial community; N2O reduction; Nitrite reduction; Root morphology; Subsoil; Nitrogen ; Archaea ; Water
ISSN (print) / ISBN
0178-2762
e-ISSN
1432-0789
Journal
Biology and Fertility of Soils
Quellenangaben
Volume: 49,
Issue: 8,
Pages: 1243-1246
Publisher
Springer
Reviewing status
Peer reviewed
Institute(s)
Research Unit Comparative Microbiome Analysis (COMI)