Impact of nitrogen and phosphorus addition on resident soil and root mycobiomes in beech forests

2021-09-15 | journal article. A publication with affiliation to the University of Göttingen.

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​Impact of nitrogen and phosphorus addition on resident soil and root mycobiomes in beech forests​
Clausing, S.; Likulunga, L. E.; Janz, D.; Feng, H. Y.; Schneider, D.; Daniel, R. & Krüger, J. et al.​ (2021) 
Biology and Fertility of Soils57(8) pp. 1031​-1052​.​ DOI: https://doi.org/10.1007/s00374-021-01593-x 

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Authors
Clausing, S.; Likulunga, L. E.; Janz, D.; Feng, H. Y.; Schneider, D.; Daniel, R.; Krüger, J.; Lang, F.; Polle, A.
Abstract
Abstract N and P are essential macronutrients for all organisms. How shifts in the availability of N or P affect fungal communities in temperate forests is not well understood. Here, we conducted a factorial P × N fertilization experiment to disentangle the effects of nutrient availability on soil-residing, root-associated, and ectomycorrhizal fungi in beech (Fagus sylvatica) forests differing in P availability. We tested the hypotheses that in P-poor forests, P fertilization leads to enhanced fungal diversity in soil and roots, resulting in enhanced P nutrition of beech, and that N fertilization aggravates P shortages, shifting the fungal communities toward nitrophilic species. In response to fertilizer treatments (1 × 50 kg ha−1 P and 5 × 30 kg ha−1 N within 2 years), the labile P fractions increased in soil and roots, regardless of plant-available P in soil. Root total P decreased in response to N fertilization and root total P increased in response to P addition at the low P site. Ectomycorrhizal species richness was unaffected by fertilizer treatments, but the relative abundances of ectomycorrhizal fungi increased in response to P or N addition. At the taxon level, fungal assemblages were unaffected by fertilizer treatments, but at the order level, different response patterns for saprotrophic fungi among soil and ectomycorrhizal fungi on roots were found. Boletales increased in response to P, and Russulales decreased under N + P addition. Our results suggest that trait conservatism in related species afforded resistance of the resident mycobiome composition to nutritional imbalances.
Issue Date
15-September-2021
Journal
Biology and Fertility of Soils 
Organization
Fakultät für Forstwissenschaften und Waldökologie ; Büsgen-Institut ; Abteilung Forstbotanik und Baumphysiologie 
ISSN
0178-2762
eISSN
1432-0789
Language
English
Sponsor
Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences and Peking Union Medical College (CN)
Special Research fellowship, University of Zambia
Georg-August-Universität Göttingen (1018)

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