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Open Access Green as soon as Postprint is submitted to ZB.
Spatial variability of hydrolytic and oxidative potential enzyme activities in different subsoil compartments.
Biol. Fertil. Soils 51, 517-521 (2015)
© 2015 Springer-Verlag Berlin Heidelberg The spatial heterogeneity of nutrient turnover in subsoils has been rarely studied in the past, although drilosphere and rhizosphere are found to be important microbial hotspots in this oligotrophic environment. In this study, we measured different potential enzyme activities in different soil compartments of subsoil and topsoil. It could be shown that the activities of hydrolases, which cleave readily available organic substrates, are significantly higher in samples from the drilosphere and rhizosphere both in topsoil and subsoil. In bulk soil, hydrolase activities decrease with depth. In contrast, oxidative enzymes, which are involved in the decay of recalcitrant organic material, are released from the microbial community especially in the bulk fraction of subsoil. This emphasizes the importance of subsoil for nutrient acquisition and gives evidence for a distinct spatial separation of microbes with diverging lifestyles.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Bulk Soil ; Drilosphere ; Microbial Hotspots ; Rhizosphere ; Soil Enzymes ; Spatial Heterogeneity; Fumigation-extraction Method; Soil Microbial Biomass; Community Structure; Carbon; Decomposition; Rhizosphere; Bacterial; Availability; Calibration; Nitrogen
ISSN (print) / ISBN
0178-2762
e-ISSN
1432-0789
Journal
Biology and Fertility of Soils
Quellenangaben
Volume: 51,
Issue: 4,
Pages: 517-521
Publisher
Springer
Publishing Place
New York
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Research Unit Comparative Microbiome Analysis (COMI)