Seasonal variation of root symbioses in boreal forests

Most plant species form a mycorrhizal symbiosis, in which the plant donates carbohydrates and in some cases lipids, and receives mineral nutrients from the fungus. Algae form a nitrogen-fixing actinorhizal symbiosis and are also mycorrhizal. The arbuscular mycorrhiza is the most widespread type in the world, while the ectomycorrhiza is predominant, especially in trees in the northern coniferous forest zone. Scab fungi are not very common in the northern coniferous forest zone and the reasons for this are not fully understood. This study will address the question of whether low temperatures and dew are directly limiting the success and competitiveness of forager fungi. In particular, nutrient uptake at different temperatures will be investigated. The results will allow a more accurate assessment of the impact of climate change on the distribution of different plants.