Record ID No. |
1779 |
Author(s) |
Tedersoo, L., Suvi, T., Jairus, T., Koljalg, U , 2008 |
Affiliation |
University of Tartu, Institute of Ecology & Earth Sciences, 40 Lai St, EE-51005 Tartu, ESTONIA |
Title |
Forest microsite effects on community composition of ectomycorrhizal fungi on seedlings of Picea abies and Betula pendula |
Source. Vol.(no):Page |
Environmental Microbiology.10(5):1189-1201p |
Categories |
Ectomycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Organism |
n.a. |
Country |
ESTONIA, Europe |
Abstracts |
Niche differentiation in soil horizons, host species and natural nutrient
gradients contribute to the high diversity of ectomycorrhizal fungi in boreal forests. This study
aims at documenting the diversity and community composition of ectomycorrhizal fungi of Norway
spruce (Picea abies) and silver birch (Betula pendula) seedlings in five most abundant microsites
in three Estonian old-growth forests. Undisturbed forest floor, windthrow mounds and pits
harboured more species than brown- and white-rotted wood. Several species of ectomycorrhizal
fungi were differentially represented on either hosts, microsites and sites. Generally, the most
frequent species in dead wood were also common in forest floor soil. Ordination analyses
suggested that decay type determined the composition of EcM fungal community in dead wood. Root
connections with in-growing mature tree roots from below affected the occurrence of certain
fungal species on seedling roots systems in dead wood. This study demonstrates that
ectomycorrhizal fungi differentially establish in certain forest microsites that is attributable
to their dispersal and competitive abilities. Elevated microsites, especially decayed wood, act
as seed beds for both ectomycorrhizal forest trees and fungi, thus affecting the succession of
boreal forest ecosystems. |