Academy of Finland
Funding decision
Name Markkola, Annamari
Organisation OY
Project title
Host carbon resources affecting symbiont communities and populations
Decision No. 138309
Decision date 14.09.2010
Funding period 01.01.2011 - 31.12.2014
Funding 669 961
WebFOCUS Report
Project description
In boreal and subarctic forest ecosystems carbon availability constrains heterotrophic fungal symbionts. Thus, carbon limitation is likely to affect mycorrhizal communities associated with host tree. In subarctic mountain birch forests with large-scale massive moth herbivory we found shifts from EMF to saprophytic fungi and from Basidio- to Ascomycetes in the roots. EMF sporocarp production declined. A long-term experiment was established to study reindeer impact on recovery of the birch. Manipulation experiments were used with defoliation and fertilization treatments to study the impacts of mountain birch herbivory on neighbour seedlings, understorey shrubs and soil fungi. We also studied possible role of shoot endophytic fungi in interactions between Empetrum nigrum ssp. hermaphroditum and Deschampsia flexuosa. Next generation sequencing and advanced bioinformatics were used in all studies in determining the composition of fungal communities in roots and soil.