Ectomycorrhizal mycelia reduce bacterial activity in a sandy soil
Författare
Summary, in English
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.
Avdelning/ar
Publiceringsår
1996
Språk
Engelska
Sidor
77-86
Publikation/Tidskrift/Serie
FEMS Microbiology Ecology
Volym
21
Issue
2
Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Oxford University Press
Ämne
- Biological Sciences
Nyckelord
- Thymidine incorporation
- Leucine incorporation
- Paxillus involutus
- Laccaria bicolor
- Ectomycorrhiza
- Bacterial activity
Status
Published
Forskningsgrupp
- Microbial Ecology
ISBN/ISSN/Övrigt
- ISSN: 1574-6941