Characterization and spatial distribution of ectomycorrhizas colonizing aspen clones released in an experimental field

Ectomycorrhizas (EM) from aspen clones released on an experimental field were characterized by morphotyping, restriction analysis and internal transcribed spacer (ITS) sequencing. In addition, their community structure and spatial distribution was analyzed. Among the 23 observed morphotypes, six myc...

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Bibliographic Details
Published in:Mycorrhiza 2004-10, Vol.14 (5), p.295-306
Main Authors: Kaldorf, M, Renker, C, Fladung, M, Buscot, F
Format: Article
Language:English
Subjects:
Agaricales - physiology
Agaricales - ultrastructure
Ascomycota - physiology
Ascomycota - ultrastructure
Biological and medical sciences
Cenococcum geophilum
DNA fingerprinting
Ecosystem
ectomycorrhizae
forest trees
Fundamental and applied biological sciences. Psychology
fungal anatomy
genetic variation
hybrids
hyphae
Hyphae - physiology
Hyphae - ultrastructure
internal transcribed spacers
Laccaria
molecular sequence data
morphotypes
morphs
Mycorrhizae - physiology
Mycorrhizae - ultrastructure
Parasitism and symbiosis
Pezizales
Phialocephala fortinii
Plant physiology and development
Polymerase Chain Reaction
Polymorphism, Restriction Fragment Length
Populus - microbiology
Populus tremula
Populus tremuloides
restriction fragment length polymorphism
sequence homology
Symbiosis
Thelephora
Thelephoraceae
Trees
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Summary:Ectomycorrhizas (EM) from aspen clones released on an experimental field were characterized by morphotyping, restriction analysis and internal transcribed spacer (ITS) sequencing. In addition, their community structure and spatial distribution was analyzed. Among the 23 observed morphotypes, six mycobionts dominated, forming roughly 90% of all ectomycorrhizas: Cenococcum geophilum, Laccaria sp., Phialocephala fortinii, two different Thelephoraceae, and one member of the Pezizales. The three most common morphotypes had an even spatial distribution, reflecting the high degree of homogeneity of the experimental field. The distribution of three other morphotypes was correlated with the distances to the spruce forest and deciduous trees bordering the experimental field. These two patterns allowed two invasion strategies of ectomycorrhizal fungi (EMF) to be recognized, the success of which depends on adaptation of the EMF to local ecological conditions.
ISSN:0940-6360
1432-1890
DOI:10.1007/s00572-003-0266-1