Microscale spatial distribution patterns of red oak (Quercus rubra L.) ectomycorrhizae

Gebhardt, S.; Wöllecke, Jens; Münzenberger, B.; Hüttl, Reinhard F.

doi:10.1007/s11557-009-0596-2

Cited by 8 publications

(3 citation statements)

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“…and Cortinarius sp., which were also present in our study, can form mycelial and EcM patches, whereas this was not the case for C. geophilium (Genney et al, 2006; Pickles et al, 2010). Clusters for Cortinarius and other fungal species ( Tomentella, Piloderma ) were also detected on oak (Gebhardt et al, 2009). The formation of clusters indicates non-random spatial structuring of the EcM communities.…”

Section: Discussionmentioning

confidence: 99%

Spatial Patterns of Ectomycorrhizal Assemblages in a Monospecific Forest in Relation to Host Tree Genotype

Lang¹,

Finkeldey²,

Polle³

2013

Front. Plant Sci.

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Ectomycorrhizas (EcM) are important for soil exploration and thereby may shape belowground interactions of roots. We investigated the composition and spatial structures of EcM assemblages in relation to host genotype in an old-growth, monospecific beech (Fagus sylvatica) forest. We hypothesized that neighboring roots of different beech individuals are colonized by similar EcM assemblages if host genotype had no influence on the fungal colonization and that the similarity would decrease with increasing distance of the sampling points. The alternative was that the EcM species showed preferences for distinct beech genotypes resulting in intraspecific variation of EcM-host assemblages. EcM species identities, abundance and exploration type as well as the genotypes of the colonized roots were determined in each sampling unit of a 1 L soil core (r = 0.04 m, depth 0.2 m). The Morisita-Horn similarity indices (MHSI) based on EcM species abundance and multiple community comparisons were calculated. No pronounced variation of MHSI with increasing distances of the sampling points within a plot was found, but variations between plots. Very high similarities and no between plot variation were found for MHSI based on EcM exploration types suggesting homogenous soil foraging in this ecosystem. The EcM community on different root genotypes in the same soil core exhibited high similarity, whereas the EcM communities on the root of the same tree genotype in different soil cores were significantly dissimilar. This finding suggests that spatial structuring of EcM assemblages occurs within the root system of an individual. This may constitute a novel, yet unknown mechanism ensuring colonization by a diverse EcM community of the roots of a given host individual.

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Section: Discussionmentioning

confidence: 99%

Spatial Patterns of Ectomycorrhizal Assemblages in a Monospecific Forest in Relation to Host Tree Genotype

Lang¹,

Finkeldey²,

Polle³

2013

Front. Plant Sci.

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“…Moreover, while Cenococcum and Clavulina were both distributed in similar layers of the forest floor, the two species tended not to exist in the same small volume of substrate (Koide et al 2005b). Other evidence of spatial partitioning was presented for ectomycorrhizal communities in P. abies stands by Baier et al (2006) and Scattolin et al (2008), in a mixed conifer forest by Rosling et al (2003), in a mixed Quercus forest by Courty et al (2008), and in a Quercus rubra forest by Gebhardt et al (2009). Second, temporal partitioning occurs.…”

Section: Coexistencementioning

confidence: 90%

General principles in the community ecology of ectomycorrhizal fungi

Koide

Fernandez

Petprakob

2011

Annals of Forest Science

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“…Efforts to find this species on other native and non-native EcM trees in the arboretum were not successful. Many EcM fungi are not dominant or are Brare^on any given host tree, and non-dominant mOTUs of EcM fungi have a patchy distribution on root tips (Richard et al 2005, Gebhardt et al 2009). Therefore, we could have missed this species in our sampling.…”

Section: Discussionmentioning

confidence: 99%

Mycorrhizal detection of native and non-native truffles in a historic arboretum and the discovery of a new North American species, Tuber arnoldianum sp. nov.

et al. 2016

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During a study comparing the ectomycorrhizal root communities in a native forest with those at the Arnold Arboretum in Massachusetts (USA), the European species Tuber borchii was detected on the roots of a native red oak in the arboretum over two successive years. Since T. borchii is an economically important edible truffle native to Europe, we conducted a search of other roots in the arboretum to determine the extent of colonization. We also wanted to determine whether other non-native Tuber species had been inadvertently introduced into this 140-year-old Arboretum because many trees were imported into the site with intact soil and roots prior to the 1921 USDA ban on these horticultural practices in the USA. While T. borchii was not found on other trees, seven other native and exotic Tuber species were detected. Among the North American Tuber species detected from ectomycorrhizae, we also collected ascomata of a previously unknown species described here as Tuber arnoldianum. This new species was found colonizing both native and non-native tree roots. Other ectomycorrhizal taxa that were detected included basidiomycetes in the genera Amanita, Russula, Tomentella, and ascomycetes belonging to Pachyphlodes, Helvella, Genea, and Trichophaea. We clarify the phylogenetic relationships of each of the Tuber species detected in this study, and we discuss their distribution on both native and non-native host trees.

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Microscale spatial distribution patterns of red oak (Quercus rubra L.) ectomycorrhizae

Cited by 8 publications

References 50 publications

Spatial Patterns of Ectomycorrhizal Assemblages in a Monospecific Forest in Relation to Host Tree Genotype

Spatial Patterns of Ectomycorrhizal Assemblages in a Monospecific Forest in Relation to Host Tree Genotype

General principles in the community ecology of ectomycorrhizal fungi

Mycorrhizal detection of native and non-native truffles in a historic arboretum and the discovery of a new North American species, Tuber arnoldianum sp. nov.

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