Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1186/s40168-022-01309-9 |
Lizenz  |
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| Titel (primär) | Long-term nitrogen deposition enhances microbial capacities in soil carbon stabilization but reduces network complexity |
| Autor | Ma, X.; Wang, T.; Shi, Z.; Chiariello, N.R.; Docherty, K.; Field, D.L.; Gutknecht, J.; Gao, Q.; Gu, Y.; Guo, X.; Hungate, B.A.; Lei, J.; Niboyet, A.; Le Roux, X.; Yuan, M.; Yuan, T.; Zhou, J.; Yang, Y. |
| Quelle | Microbiome |
| Erscheinungsjahr | 2022 |
| Department | BOOEK |
| Band/Volume | 10 |
| Seite von | art. 112 |
| Sprache | englisch |
| Topic | T5 Future Landscapes |
| Supplements | https://ndownloader.figstatic.com/files/36475786 |
| Keywords | Soil microbial community; Nitrogen deposition; High-throughput sequencing; GeoChip; Global change |
| Abstract | Background Anthropogenic activities have
increased the inputs of atmospheric reactive nitrogen (N) into terrestrial
ecosystems, affecting soil carbon stability and microbial communities. Previous
studies have primarily examined the effects of nitrogen deposition on microbial
taxonomy, enzymatic activities, and functional processes. Here, we examined
various functional traits of soil microbial communities and how these traits
are interrelated in a Mediterranean-type grassland administrated with 14 years
of 7 g m−2 year−1 of N amendment, based on estimated atmospheric N deposition
in areas within California, USA, by the end of the twenty-first century. Results Soil microbial communities were significantly altered by N deposition. Consistent with higher aboveground plant biomass and litter, fast-growing bacteria, assessed by abundance-weighted average rRNA operon copy number, were favored in N deposited soils. The relative abundances of genes associated with labile carbon (C) degradation (e.g., amyA and cda) were also increased. In contrast, the relative abundances of functional genes associated with the degradation of more recalcitrant C (e.g., mannanase and chitinase) were either unchanged or decreased. Compared with the ambient control, N deposition significantly reduced network complexity, such as average degree and connectedness. The network for N deposited samples contained only genes associated with C degradation, suggesting that C degradation genes became more intensely connected under N deposition. Conclusions We propose a conceptual model to summarize the mechanisms of how changes in above- and belowground ecosystems by long-term N deposition collectively lead to more soil C accumulation. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=26473 |
| Ma, X., Wang, T., Shi, Z., Chiariello, N.R., Docherty, K., Field, D.L., Gutknecht, J., Gao, Q., Gu, Y., Guo, X., Hungate, B.A., Lei, J., Niboyet, A., Le Roux, X., Yuan, M., Yuan, T., Zhou, J., Yang, Y. (2022): Long-term nitrogen deposition enhances microbial capacities in soil carbon stabilization but reduces network complexity Microbiome 10 , art. 112 10.1186/s40168-022-01309-9 |
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