Abstract
Effects of elevated atmospheric carbon dioxide (CO2) levels on the production and spread of ectomycorrhizal fungal mycelium from colonised Scots pine roots were investigated. Pinus sylvestris (L.) Karst. seedlings inoculated with either Hebeloma crustuliniforme (Bull:Fr.) Quél. or Paxillus involutus (Fr.) Fr. were grown at either ambient (350 ppm) or elevated (700 ppm) levels of CO2. Mycelial production was measured after 6 weeks in pots, and mycelial spread from inoculated seedlings was studied after 4 months growth in perlite in shallow boxes containing uncolonised bait seedlings. Plant and fungal biomass were analysed, as well as carbon and nitrogen content of seedling shoots. Mycelial biomass production by H. crustuliniforme was significantly greater under elevated CO2 (up to a 3-fold increase was observed). Significantly lower concentrations and total amounts of N were found in plants exposed to elevated CO2.
| Original language | English |
|---|---|
| Pages (from-to) | 25-31 |
| Number of pages | 7 |
| Journal | Mycorrhiza |
| Volume | 15 |
| Early online date | 29 Jan 2004 |
| DOIs | |
| Publication status | Published - Jan 2005 |
| Externally published | Yes |
Bibliographical note
Funding Information:Acknowledgements We wish to thank Jan Parsby for technical support in constructing the CO2 chambers, and Björn Lindahl for discussing the results. We are grateful to Ian Alexander for comments on the manuscript. This work was done with financial support from the Swedish Energy Adminstration (STEM) and the Knut and Alice Wallenberg Foundation.
Keywords
- Ectomycorrhiza
- Elevated CO
- Mycelial spread
- Mycelium
- Root colonisation