Natural 15 N abundance in fruit bodies of ectomycorrhizal fungi from boreal forests
The 15 N natural abundance and N concentrations of fruit bodies from 70 species (23 genera) of ectomycorrhizal fungi found in boreal forests are presented. Large intraspecific and intrageneric differences were found, e.g. 8.3‰15 N in the species Dermocybe crocea and 12.6‰ in the genus Cortinarius. I...
| Veröffentlicht in: | The New phytologist. - 1979. - 136(1997), 4 vom: 18. Aug., Seite 713-720 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1997
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| Zugriff auf das übergeordnete Werk: | The New phytologist |
| Schlagworte: | Journal Article Boreal forest ectomycorrhizal fungi nitrogen stable isotopes δ15N |
| Zusammenfassung: | The 15 N natural abundance and N concentrations of fruit bodies from 70 species (23 genera) of ectomycorrhizal fungi found in boreal forests are presented. Large intraspecific and intrageneric differences were found, e.g. 8.3‰15 N in the species Dermocybe crocea and 12.6‰ in the genus Cortinarius. In addition, significant differences in both δ15 N and %N were found between different parts of fruit bodies, with cap material giving consistently higher values. Proteins and amino acids were enriched by 9.7±0.4‰ (mean ± 1 SE) relative to chitin, irrespective of the part of the fruit body examined. Chitin had δ15 N values similar to that of plant hosts. The higher δ15 N and %N values of the caps than of the stipes probably reflect a higher portion of proteins and amino acids in the caps. The δ15 N of mycorrhizal fungi can be a function of the N species used (organic N, NH4 + , NO3 - ), the depth of soil at which the mycelium occurs, and metabolic fractionations. The metabolic fractionations, e.g. potential transaminations during the flux of N from the soil through the fungus to the plant, make it difficult, at present, to make inferences about sources of N based on δ15 N values alone. No effect of sample drying temperature on δ15 values of fungal material was detected |
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| Beschreibung: | Date Revised 19.04.2021 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1469-8137 |
| DOI: | 10.1046/j.1469-8137.1997.00788.x |