Gebauer, G; Taylor, AFS: 15N natural abundance in fruit bodies of different functional groups of fungi in relation to substrate utilization, New Phytologist, 142, 93-101 (1999), doi:10.1046/j.1469-8137.1999.00373.x
Natural abundances of 15N and N concentrations of 34 fruit bodies from 24 species of ectomycorrhizal and saprophytic fungi were measured in a temperate Central European mixed forest stand. The fungi of the two life forms are known to be capable of utilizing different types of N sources (organic N compounds from the humus, inorganic N from the soil and N from litter or wood) differing by their 15N natural abundance values. Based on the two life forms and the three different N sources, four functional groups of fungi were distinguished: (1) ectomycorrhizal fungi capable of utilizing organic N from the humus; (2) ectomycorrhizal fungi known to depend on inorganic N compounds in the soil; (3) saprophytes capable of utilizing organic N from the humus; and (4) saprophytes utilizing N from dead wood or litter. Large differences were found between species in the d15N values (-3.0 to 3.3o/oo) and in the N concentrations (0.84 to 6.61 mmol eq N g dw-1) of the fruit bodies. In most cases fungi were more enriched in 15N than their respective bulk N source was. Fungi living in humus, and presumably having access to organic N compounds (groups 1 and 3), were significantly more enriched in 15N than fungi which are known to depend on inorganic N (e. g. Laccaria, group 2), or fungi living on litter or wood (group 4), irrespective of whether they were ectomycorrhizal or saprophytic species. Fungi living in humus had significantly higher N concentrations than fungi living on litter or wood.
Aktuelle Termine

Do. 13.10.2022
BayCEER Workshop 2022
Do. 20.10.2022
Do. 27.10.2022
Vortrag im Rahmen der Zwischenevaluierung Habilitation
Do. 03.11.2022
Mo. 17.10.2022
Wasserkontroversen III: Exkursion Kooperationen Land-/Wasserwirtschaft
Wetter Versuchsflächen
Luftdruck (356m): 979.5 hPa
Lufttemperatur: 5.4 °C
Niederschlag: 0.0 mm/24h
Wind (Höhe 17m): 4.7 km/h
Wind (Max.): 10.4 km/h
Windrichtung: S

Globalstrahlung: 2 W/m²
Lufttemperatur: 7.8 °C
Niederschlag: 0.1 mm/24h
Wind (Höhe 32m): 16.5 km/h

Diese Webseite verwendet Cookies. weitere Informationen