Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1073/pnas.1508382112
Titel (primär) Consistent responses of soil microbial communities to elevated nutrient inputs in grasslands across the globe
Autor Leff, J.W.; Jones, S.E.; Prober, S.M.; Barberán, A.; Borer, E.T.; Firn, J.L.; Harpole, W.S. ORCID logo ; Hobbie, S.E.; Hofmockel, K.S.; Knops, J.M.H.; McCulley, R.L.; La Pierre, K.; Risch, A.C.; Seabloom, E.W.; Schütz, M.; Steenbock, C.; Stevens, C.J.; Fierer, N.
Quelle Proceedings of the National Academy of Sciences of the United States of America
Erscheinungsjahr 2015
Department iDiv; PHYDIV
Band/Volume 112
Heft 35
Seite von 10967
Seite bis 10972
Sprache englisch
Keywords soil bacteria; soil fungi; shotgun metagenomics; soil ecology; fertilization
UFZ Querschnittsthemen RU1
Abstract Soil microorganisms are critical to ecosystem functioning and the maintenance of soil fertility. However, despite global increases in the inputs of nitrogen (N) and phosphorus (P) to ecosystems due to human activities, we lack a predictive understanding of how microbial communities respond to elevated nutrient inputs across environmental gradients. Here we used high-throughput sequencing of marker genes to elucidate the responses of soil fungal, archaeal, and bacterial communities using an N and P addition experiment replicated at 25 globally distributed grassland sites. We also sequenced metagenomes from a subset of the sites to determine how the functional attributes of bacterial communities change in response to elevated nutrients. Despite strong compositional differences across sites, microbial communities shifted in a consistent manner with N or P additions, and the magnitude of these shifts was related to the magnitude of plant community responses to nutrient inputs. Mycorrhizal fungi and methanogenic archaea decreased in relative abundance with nutrient additions, as did the relative abundances of oligotrophic bacterial taxa. The metagenomic data provided additional evidence for this shift in bacterial life history strategies because nutrient additions decreased the average genome sizes of the bacterial community members and elicited changes in the relative abundances of representative functional genes. Our results suggest that elevated N and P inputs lead to predictable shifts in the taxonomic and functional traits of soil microbial communities, including increases in the relative abundances of faster-growing, copiotrophic bacterial taxa, with these shifts likely to impact belowground ecosystems worldwide.
dauerhafte UFZ-Verlinkung
Leff, J.W., Jones, S.E., Prober, S.M., Barberán, A., Borer, E.T., Firn, J.L., Harpole, W.S., Hobbie, S.E., Hofmockel, K.S., Knops, J.M.H., McCulley, R.L., La Pierre, K., Risch, A.C., Seabloom, E.W., Schütz, M., Steenbock, C., Stevens, C.J., Fierer, N. (2015):
Consistent responses of soil microbial communities to elevated nutrient inputs in grasslands across the globe
Proc. Natl. Acad. Sci. U.S.A. 112 (35), 10967 - 10972 10.1073/pnas.1508382112