Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia

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dc.identifier.uri http://dx.doi.org/10.15488/484
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/508
dc.contributor.author Schnecker, Jörg
dc.contributor.author Wild, Birgit
dc.contributor.author Takriti, Mounir
dc.contributor.author Alves, Ricardo J. Eloy
dc.contributor.author Gentsch, Norman
dc.contributor.author Gittel, Antje
dc.contributor.author Hofer, Angelika
dc.contributor.author Klaus, Karoline
dc.contributor.author Knoltsch, Anna
dc.contributor.author Lashchinskiy, Nikolay
dc.contributor.author Mikutta, Robert
dc.contributor.author Richter, Andreas
dc.date.accessioned 2016-09-01T09:05:33Z
dc.date.available 2016-09-01T09:05:33Z
dc.date.issued 2015-04
dc.identifier.citation Schnecker, Joerg; Wild, Birgit; Takriti, Mounir; Alves, Ricardo J. Eloy et al.: Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia. In: Soil Biology & Biochemistry 83 (2015), 106. DOI: http://dx.doi.org/10.1016/j.soilbio.2015.01.016
dc.description.abstract Soil horizons below 30 cm depth contain about 60% of the organic carbon stored in soils. Although insight into the physical and chemical stabilization of soil organic matter (SUM) and into microbial community composition in these horizons is being gained, information on microbial functions of subsoil microbial communities and on associated microbially-mediated processes remains sparse. To identify possible controls on enzyme patterns, we correlated enzyme patterns with biotic and abiotic soil parameters, as well as with microbial community composition, estimated using phospholipid fatty acid profiles. Enzyme patterns (i.e. distance-matrixes calculated from these enzyme activities) were calculated from the activities of six extracellular enzymes (cellobiohydrolase, leucine-amino-peptidase, N-acetylglucosaminidase, chitotriosidase, phosphatase and phenoloxidase), which had been measured in soil samples from organic topsoil horizons, mineral topsoil horizons, and mineral subsoil horizons from seven ecosystems along a 1500 km latitudinal transect in Western Siberia. We found that hydrolytic enzyme activities decreased rapidly with depth, whereas oxidative enzyme activities in mineral horizons were as high as, or higher than in organic topsoil horizons. Enzyme patterns varied more strongly between ecosystems in mineral subsoil horizons than in organic topsoils. The enzyme patterns in topsoil horizons were correlated with SUM content (i.e., C and N content) and microbial community composition. In contrast, the enzyme patterns in mineral subsoil horizons were related to water content, soil pH and microbial community composition. The lack of correlation between enzyme patterns and SUM quantity in the mineral subsoils suggests that SOM chemistry, spatial separation or physical stabilization of SUM rather than SUM content might determine substrate availability for enzymatic breakdown. The correlation of microbial community composition and enzyme patterns in all horizons, suggests that microbial community composition shapes enzyme patterns and might act as a modifier for the usual dependency of decomposition rates on SUM content or C/N ratios. eng
dc.description.sponsorship Austrian Science Fund/FWF/1370-B17
dc.language.iso eng
dc.publisher Oxford : Pergamon-Elsevier Science Ltd
dc.relation.ispartofseries Soil Biology and Biochemistry 83 (2015)
dc.rights CC BY 4.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject extracellular enzymes eng
dc.subject plfa eng
dc.subject tundra eng
dc.subject boreal forests eng
dc.subject steppe eng
dc.subject permafrost eng
dc.subject soil organic-matter eng
dc.subject mycorrhizal fungi eng
dc.subject forest soils eng
dc.subject decomposition eng
dc.subject nitrogen eng
dc.subject carbon eng
dc.subject dynamics eng
dc.subject litter eng
dc.subject depth eng
dc.subject ectomycorrhizal eng
dc.subject.ddc 500 | Naturwissenschaften ger
dc.subject.ddc 570 | Biowissenschaften, Biologie ger
dc.title Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia
dc.type article
dc.type Text
dc.relation.issn 0038-0717
dc.relation.doi http://dx.doi.org/10.1016/j.soilbio.2015.01.016
dc.bibliographicCitation.volume 83
dc.bibliographicCitation.firstPage 106
dc.bibliographicCitation.lastPage 115
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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