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Can the extent of degradation of soil fungal mycelium during soil incubation be used to estimate ectomycorrhizal biomass in soil?

Bååth, Erland LU ; Nilsson, Lars Ola LU ; Göransson, Hans LU and Wallander, Håkan LU (2004) In Soil Biology & Biochemistry 36(12). p.2105-2109
Abstract
The extent of degradation of the fungal biomass in forest soil during laboratory incubation was investigated as a measure of ectomycorrhizal (EM) biomass. The method simulates the disappearance of fungal mycelium after root trenching, where the EM fungi, deprived of its energy source (the tree), will start to die off. Incubating a forest humus soil at 25 C resulted in a decrease in the relative proportion (mol%) of the phospholipid fatty acid 18:2omega6,9 (a fungal marker molecule) within 3-6 months, indicating that fungal biomass was disappearing. Incubation at 5 degreesC resulted in essentially no change in the amount of 18:2omega6,9. The measurement of ergosterol, another fungal marker molecule, gave similar results. Incubation of... (More)
The extent of degradation of the fungal biomass in forest soil during laboratory incubation was investigated as a measure of ectomycorrhizal (EM) biomass. The method simulates the disappearance of fungal mycelium after root trenching, where the EM fungi, deprived of its energy source (the tree), will start to die off. Incubating a forest humus soil at 25 C resulted in a decrease in the relative proportion (mol%) of the phospholipid fatty acid 18:2omega6,9 (a fungal marker molecule) within 3-6 months, indicating that fungal biomass was disappearing. Incubation at 5 degreesC resulted in essentially no change in the amount of 18:2omega6,9. The measurement of ergosterol, another fungal marker molecule, gave similar results. Incubation of different forest soils (pine, spruce and spruce/oak), and assuming that the disappearance of fungal biomass during this period of time was entirely due to EM fungi, resulted in an estimation of EM biomass of between 47 and 84% of the total fungal biomass in these soils. The humus layer had more EM biomass than deeper mineral layers. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Soil Biology & Biochemistry
volume
36
issue
12
pages
2105 - 2109
publisher
Elsevier
external identifiers
  • wos:000224819700021
  • scopus:5644263864
ISSN
0038-0717
DOI
10.1016/j.soilbio.2004.06.004
language
English
LU publication?
yes
id
e78e56d7-7b2c-4872-ba1a-0cb25d117bc9 (old id 135588)
date added to LUP
2007-06-29 09:16:12
date last changed
2017-11-19 04:06:28
@article{e78e56d7-7b2c-4872-ba1a-0cb25d117bc9,
  abstract     = {The extent of degradation of the fungal biomass in forest soil during laboratory incubation was investigated as a measure of ectomycorrhizal (EM) biomass. The method simulates the disappearance of fungal mycelium after root trenching, where the EM fungi, deprived of its energy source (the tree), will start to die off. Incubating a forest humus soil at 25 C resulted in a decrease in the relative proportion (mol%) of the phospholipid fatty acid 18:2omega6,9 (a fungal marker molecule) within 3-6 months, indicating that fungal biomass was disappearing. Incubation at 5 degreesC resulted in essentially no change in the amount of 18:2omega6,9. The measurement of ergosterol, another fungal marker molecule, gave similar results. Incubation of different forest soils (pine, spruce and spruce/oak), and assuming that the disappearance of fungal biomass during this period of time was entirely due to EM fungi, resulted in an estimation of EM biomass of between 47 and 84% of the total fungal biomass in these soils. The humus layer had more EM biomass than deeper mineral layers.},
  author       = {Bååth, Erland and Nilsson, Lars Ola and Göransson, Hans and Wallander, Håkan},
  issn         = {0038-0717},
  language     = {eng},
  number       = {12},
  pages        = {2105--2109},
  publisher    = {Elsevier},
  series       = {Soil Biology & Biochemistry},
  title        = {Can the extent of degradation of soil fungal mycelium during soil incubation be used to estimate ectomycorrhizal biomass in soil?},
  url          = {http://dx.doi.org/10.1016/j.soilbio.2004.06.004},
  volume       = {36},
  year         = {2004},
}