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Ectomycorrhizal mycelia reduce bacterial activity in a sandy soil

Olsson, Pål Axel ; Chalot, Michel ; Bååth, Erland LU ; Finlay, Roger D. and Söderström, Bengt LU (1996) In FEMS Microbiology Ecology 21(2). p.77-86
Abstract
Bacterial activity was studied in a growth system containing Pinus contorta seedlings inoculated with different mycorrhizal fungi. Nylon nets enabled separation of soil compartments with extramatrical mycorrhizal hyphae from soil compartments with roots and mycelium. In three separate experiments bacterial activity, estimated as thymidine incorporation, was reduced in soils with Paxillus involutus hyphae compared to controls without mycorrhizal hyphae. This effect was found irrespective of compartments with and without roots were compared. Laccaria bicolor only reduced the activity in one of these three experiments. Thelephora terrestris (tested in two experiments), Laccaria proxima, Suillus variegatus and Hebeloma crustuliniforme (one... (More)
Bacterial activity was studied in a growth system containing Pinus contorta seedlings inoculated with different mycorrhizal fungi. Nylon nets enabled separation of soil compartments with extramatrical mycorrhizal hyphae from soil compartments with roots and mycelium. In three separate experiments bacterial activity, estimated as thymidine incorporation, was reduced in soils with Paxillus involutus hyphae compared to controls without mycorrhizal hyphae. This effect was found irrespective of compartments with and without roots were compared. Laccaria bicolor only reduced the activity in one of these three experiments. Thelephora terrestris (tested in two experiments), Laccaria proxima, Suillus variegatus and Hebeloma crustuliniforme (one experiment), also reduced the thymidine and leucine incorporation rates of bacteria. The reduction for these fungi varied between 20% and 50% in all experiments. Numbers of viable bacteria appeared to be reduced by T. terrestris, L. proxima, S. variegatus and H. crustuliniforme in one experiment, while no effect was seen in the other experiments. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Thymidine incorporation, Leucine incorporation, Paxillus involutus, Laccaria bicolor, Ectomycorrhiza, Bacterial activity
in
FEMS Microbiology Ecology
volume
21
issue
2
pages
77 - 86
publisher
Oxford University Press
external identifiers
  • scopus:0030251301
ISSN
1574-6941
DOI
10.1111/j.1574-6941.1996.tb00335.x
language
English
LU publication?
yes
id
6a5935e7-cef5-41b4-83a4-8e7a5354ed16 (old id 2226254)
date added to LUP
2016-04-01 12:35:10
date last changed
2022-01-27 07:06:17
@article{6a5935e7-cef5-41b4-83a4-8e7a5354ed16,
  abstract     = {{Bacterial activity was studied in a growth system containing Pinus contorta seedlings inoculated with different mycorrhizal fungi. Nylon nets enabled separation of soil compartments with extramatrical mycorrhizal hyphae from soil compartments with roots and mycelium. In three separate experiments bacterial activity, estimated as thymidine incorporation, was reduced in soils with Paxillus involutus hyphae compared to controls without mycorrhizal hyphae. This effect was found irrespective of compartments with and without roots were compared. Laccaria bicolor only reduced the activity in one of these three experiments. Thelephora terrestris (tested in two experiments), Laccaria proxima, Suillus variegatus and Hebeloma crustuliniforme (one experiment), also reduced the thymidine and leucine incorporation rates of bacteria. The reduction for these fungi varied between 20% and 50% in all experiments. Numbers of viable bacteria appeared to be reduced by T. terrestris, L. proxima, S. variegatus and H. crustuliniforme in one experiment, while no effect was seen in the other experiments.}},
  author       = {{Olsson, Pål Axel and Chalot, Michel and Bååth, Erland and Finlay, Roger D. and Söderström, Bengt}},
  issn         = {{1574-6941}},
  keywords     = {{Thymidine incorporation; Leucine incorporation; Paxillus involutus; Laccaria bicolor; Ectomycorrhiza; Bacterial activity}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{77--86}},
  publisher    = {{Oxford University Press}},
  series       = {{FEMS Microbiology Ecology}},
  title        = {{Ectomycorrhizal mycelia reduce bacterial activity in a sandy soil}},
  url          = {{http://dx.doi.org/10.1111/j.1574-6941.1996.tb00335.x}},
  doi          = {{10.1111/j.1574-6941.1996.tb00335.x}},
  volume       = {{21}},
  year         = {{1996}},
}