Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 166-177 |
| Seitenumfang | 12 |
| Fachzeitschrift | FEMS microbiology ecology |
| Jahrgang | 73 |
| Ausgabenummer | 1 |
| Publikationsstatus | Veröffentlicht - 1 Juli 2010 |
Abstract
A long-term field experiment conducted in a Norway spruce forest at Solling, Central Germany, was used to verify and compare the response of lignin-decomposing fungal communities in soils receiving current and preindustrial atmospheric nitrogen (N) input for 14.5 years. Therefore, we investigated the decomposition of lignin compounds in relation to phenol oxidase activity and the diversity of basidiomycetes containing laccase genes in organic and mineral horizons. Lignin-derived CuO oxidation products and enzyme activity decreased with soil depth, while the degree of oxidative transformation of lignin increased. These patterns did not change with reduced atmospheric N input, likely reflecting a lasting saturation in available N. The laccase gene diversity decreased with soil depth in spring. In autumn, this pattern was only found in the control plot, receiving current N input. Principal component analysis confirmed the depth profile and distinguished a response of the fungal community to reduced N deposition for most organic layers in spring and a roof effect for the Oe layer in autumn. These responses of the fungal community did not translate into changes in enzyme activity and lignin content and decomposition, suggesting that transformation processes in soils are well buffered despite the rapid response of the microbial community to environmental factors.
ASJC Scopus Sachgebiete
- Immunologie und Mikrobiologie (insg.)
- Mikrobiologie
- Umweltwissenschaften (insg.)
- Ökologie
- Immunologie und Mikrobiologie (insg.)
- Angewandte Mikrobiologie und Biotechnologie
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in: FEMS microbiology ecology, Jahrgang 73, Nr. 1, 01.07.2010, S. 166-177.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Response of recalcitrant soil substances to reduced N deposition in a spruce forest soil: Integrating laccase-encoding genes and lignin decomposition
AU - Theuerl, Susanne
AU - Dörr, Nicole
AU - Guggenberger, Georg
AU - Langer, Uwe
AU - Kaiser, Klaus
AU - Lamersdorf, Norbert
AU - Buscot, Fraņois
PY - 2010/7/1
Y1 - 2010/7/1
N2 - A long-term field experiment conducted in a Norway spruce forest at Solling, Central Germany, was used to verify and compare the response of lignin-decomposing fungal communities in soils receiving current and preindustrial atmospheric nitrogen (N) input for 14.5 years. Therefore, we investigated the decomposition of lignin compounds in relation to phenol oxidase activity and the diversity of basidiomycetes containing laccase genes in organic and mineral horizons. Lignin-derived CuO oxidation products and enzyme activity decreased with soil depth, while the degree of oxidative transformation of lignin increased. These patterns did not change with reduced atmospheric N input, likely reflecting a lasting saturation in available N. The laccase gene diversity decreased with soil depth in spring. In autumn, this pattern was only found in the control plot, receiving current N input. Principal component analysis confirmed the depth profile and distinguished a response of the fungal community to reduced N deposition for most organic layers in spring and a roof effect for the Oe layer in autumn. These responses of the fungal community did not translate into changes in enzyme activity and lignin content and decomposition, suggesting that transformation processes in soils are well buffered despite the rapid response of the microbial community to environmental factors.
AB - A long-term field experiment conducted in a Norway spruce forest at Solling, Central Germany, was used to verify and compare the response of lignin-decomposing fungal communities in soils receiving current and preindustrial atmospheric nitrogen (N) input for 14.5 years. Therefore, we investigated the decomposition of lignin compounds in relation to phenol oxidase activity and the diversity of basidiomycetes containing laccase genes in organic and mineral horizons. Lignin-derived CuO oxidation products and enzyme activity decreased with soil depth, while the degree of oxidative transformation of lignin increased. These patterns did not change with reduced atmospheric N input, likely reflecting a lasting saturation in available N. The laccase gene diversity decreased with soil depth in spring. In autumn, this pattern was only found in the control plot, receiving current N input. Principal component analysis confirmed the depth profile and distinguished a response of the fungal community to reduced N deposition for most organic layers in spring and a roof effect for the Oe layer in autumn. These responses of the fungal community did not translate into changes in enzyme activity and lignin content and decomposition, suggesting that transformation processes in soils are well buffered despite the rapid response of the microbial community to environmental factors.
KW - Degradation of organic matter
KW - Laccase-encoding gene diversity
KW - Phenol oxidase activity
KW - Reduction of N input
KW - Soil ecology
UR - http://www.scopus.com/inward/record.url?scp=77953194790&partnerID=8YFLogxK
U2 - 10.1111/j.1574-6941.2010.00877.x
DO - 10.1111/j.1574-6941.2010.00877.x
M3 - Article
C2 - 20491921
AN - SCOPUS:77953194790
VL - 73
SP - 166
EP - 177
JO - FEMS microbiology ecology
JF - FEMS microbiology ecology
SN - 0168-6496
IS - 1
ER -