Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia
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 subsoi...
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2015
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ftdatacite:10.15488/484 2023-05-15T17:58:21+02:00 Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia Schnecker, Jörg Wild, Birgit Takriti, Mounir Alves, Ricardo J. Eloy Gentsch, Norman Gittel, Antje Hofer, Angelika Klaus, Karoline Knoltsch, Anna Lashchinskiy, Nikolay Mikutta, Robert Richter, Andreas 2015 https://dx.doi.org/10.15488/484 http://www.repo.uni-hannover.de/handle/123456789/508 eng unknown Oxford : Pergamon-Elsevier Science Ltd CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0 CC-BY extracellular enzymes plfa tundra boreal forests steppe permafrost soil organic-matter mycorrhizal fungi forest soils decomposition nitrogen carbon dynamics litter depth ectomycorrhizal Dewey Decimal Classification500 | Naturwissenschaften Dewey Decimal Classification500 | Naturwissenschaften570 | Biowissenschaften, Biologie Other CreativeWork article 2015 ftdatacite https://doi.org/10.15488/484 2021-11-05T12:55:41Z 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. Article in Journal/Newspaper permafrost Tundra Siberia DataCite Metadata Store (German National Library of Science and Technology) Dewey ENVELOPE(-64.320,-64.320,-65.907,-65.907) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
extracellular enzymes plfa tundra boreal forests steppe permafrost soil organic-matter mycorrhizal fungi forest soils decomposition nitrogen carbon dynamics litter depth ectomycorrhizal Dewey Decimal Classification500 | Naturwissenschaften Dewey Decimal Classification500 | Naturwissenschaften570 | Biowissenschaften, Biologie |
spellingShingle |
extracellular enzymes plfa tundra boreal forests steppe permafrost soil organic-matter mycorrhizal fungi forest soils decomposition nitrogen carbon dynamics litter depth ectomycorrhizal Dewey Decimal Classification500 | Naturwissenschaften Dewey Decimal Classification500 | Naturwissenschaften570 | Biowissenschaften, Biologie Schnecker, Jörg Wild, Birgit Takriti, Mounir Alves, Ricardo J. Eloy Gentsch, Norman Gittel, Antje Hofer, Angelika Klaus, Karoline Knoltsch, Anna Lashchinskiy, Nikolay Mikutta, Robert Richter, Andreas Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia |
topic_facet |
extracellular enzymes plfa tundra boreal forests steppe permafrost soil organic-matter mycorrhizal fungi forest soils decomposition nitrogen carbon dynamics litter depth ectomycorrhizal Dewey Decimal Classification500 | Naturwissenschaften Dewey Decimal Classification500 | Naturwissenschaften570 | Biowissenschaften, Biologie |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Schnecker, Jörg Wild, Birgit Takriti, Mounir Alves, Ricardo J. Eloy Gentsch, Norman Gittel, Antje Hofer, Angelika Klaus, Karoline Knoltsch, Anna Lashchinskiy, Nikolay Mikutta, Robert Richter, Andreas |
author_facet |
Schnecker, Jörg Wild, Birgit Takriti, Mounir Alves, Ricardo J. Eloy Gentsch, Norman Gittel, Antje Hofer, Angelika Klaus, Karoline Knoltsch, Anna Lashchinskiy, Nikolay Mikutta, Robert Richter, Andreas |
author_sort |
Schnecker, Jörg |
title |
Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia |
title_short |
Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia |
title_full |
Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia |
title_fullStr |
Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia |
title_full_unstemmed |
Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia |
title_sort |
microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in western siberia |
publisher |
Oxford : Pergamon-Elsevier Science Ltd |
publishDate |
2015 |
url |
https://dx.doi.org/10.15488/484 http://www.repo.uni-hannover.de/handle/123456789/508 |
long_lat |
ENVELOPE(-64.320,-64.320,-65.907,-65.907) |
geographic |
Dewey |
geographic_facet |
Dewey |
genre |
permafrost Tundra Siberia |
genre_facet |
permafrost Tundra Siberia |
op_rights |
CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.15488/484 |
_version_ |
1766166938271088640 |