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Natural 13 C and 15 N abundance of field‐collected fungi and their ecological implications
Author(s) -
KOHZU A.,
YOSHIOKA T.,
ANDO T.,
TAKAHASHI M.,
KOBA K.,
WADA E.
Publication year - 1999
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1046/j.1469-8137.1999.00508.x
Subject(s) - botany , basidiocarp , abundance (ecology) , litter , biology , ectomycorrhiza , ectosymbiosis , relative species abundance , basidiomycota , fungus , mycorrhiza , ecology , symbiosis , taxonomy (biology) , genetics , bacteria
The natural abundance of 13 C and 15 N was measured in basidiocarps of at least 115 species in 88 genera of ectomycorrhizal, wood‐decomposing and litter‐decomposing fungi from Japan and Malaysia. The natural abundance of 13 C and 15 N was also measured in leaves, litter, soil and wood from three different sites. 15 N and 13 C were enriched in ectomycorrhizal and wood‐decomposing fungi, respectively, relative to their substrates. Ectomycorrhizal and wood‐decomposing fungi could be distinguished on the basis of their δ 13 C and δ 15 N signatures. Although there was high variability in the isotopic composition of fungi, the following isotope‐ enrichment factors (ε, mean±SD) of the fungi relative to substrates were observed: ε ectomycorrhizal fungi/litter = 6.1±0.4‰ 15 N ε ectomycorrhizal fungi/wood = 1.4±0.8‰ 13 C ε wood‐decomposing fungi/wood = −0.6±0.7‰ 15 N ε wood‐decomposing fungi/wood = 3.5±0.9‰ 13 C The basis of isotope fractionation in C metabolism from wood to wood‐decomposing fungus is discussed.