Ectomycorrhizal Diversity on Dryas octopetala and Salix reticulata in an Alpine Cliff Ecosystem

Ryberg, Martin; Larsson, Ellen; Molau, Ulf

doi:10.1657/1938-4246-41.4.506

Cited by 70 publications

(62 citation statements)

References 46 publications

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“…The major genera found in our study (Thelephora, Tomentella, Sebacina, Inocybe, Cortinarius, Russula, Hebeloma, Laccaria, Clavulina) are characteristic of arctic and alpine environments (Mü hlmann and Peintner 2008, Ryberg et al 2009, Bjorbaekmo et al 2010, Deslippe et al 2011, Geml et al 2012b. While the Thelephoraceae have a world-wide distribution (Koljalg et al 2000), they seem especially species-rich in the Arctic, as they comprised nearly a third of all observed species in our study.…”

Section: Emf Diversity In the Arcticmentioning

confidence: 62%

“…Patterns from morphological sporocarp-descriptions of macrofungi indicate that arctic fungi are widely distributed in arctic and alpine habitats on all continents. Some widely distributed EMF genera that have a preponderance in arctic and alpine conditions include Inocybe, Cortinarius, Hebeloma, Russula, Thelephora, Tomentella, Cenococcum, and Laccaria (Gardes and Dahlberg 1996, Mü hlmann and Peintner 2008, Ryberg et al 2009, Deslippe et al 2011, Fujiyoshi et al 2011). However, reliance on morphologically recognized species may underestimate fungal diversity .…”

Section: Introductionmentioning

confidence: 99%

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Distribution and drivers of ectomycorrhizal fungal communities across the North American Arctic

Timling

Dahlberg²,

Walker

et al. 2012

Ecosphere

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Abstract. Ectomycorrhizal fungi (EMF) form symbioses with a few plant species that comprise a large fraction of the arctic vegetation. Despite their importance, the identity, abundance and distribution of EMF in the Arctic, as well as the key drivers controlling their community composition are poorly understood. In this study, we investigated the diversity and structure of EMF communities across a bioclimatic gradient spanning much of the North American Arctic. We collected roots from two principal arctic ectomycorrhizal host plants, Salix arctica and Dryas integrifolia, typically growing intermingled, at 23 locations stratified across the five bioclimatic subzones of the Arctic. DNA was extracted from ectomycorrhizal root tips and the ITS region was sequenced and phylogenetically analyzed. A total of 242 fungal Operational Taxonomic Units (OTUs) were documented, with 203 OTUs belonging to the Basidiomycota and 39 to the Ascomycota, exceeding the number of previously morphologically described EMF in the Arctic. EMF communities were dominated by a few common and species-rich families such as Thelephoraceae, Inocybaceae, Sebacinaceae, Cortinariaceae, and Pyronemataceae. Both host plants showed similar species richness, with 176 OTUs on Salix arctica and 154 OTUs on Dryas integrifolia. Host plant identity did not affect EMF community composition. The ten most abundant OTUs had a wide geographic distribution throughout the Arctic, and were also found in boreal, temperate and Mediterranean regions, where they were associated with a variety of hosts. Species richness did not decline with increasing latitude. However, EMF community structure changed gradually across the bioclimatic gradient with the greatest similarity between neighboring bioclimatic subzones and locations. EMF community structure was correlated with environmental factors at a regional scale, corresponding to a complex of glaciation history, geology, soil properties, plant productivity and climate. This is the first large-scale study of EMF communities across all five bioclimatic subzones of the North American Arctic, accompanied by an extensive set of environmental factors analyzed to date. While our study provides baseline data to assess shifts of plant and fungi distribution in response to climate change, it also suggests that with ongoing climate warming, EMF community composition may be affected by northward shifts of some taxa.

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Section: Emf Diversity In the Arcticmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Distribution and drivers of ectomycorrhizal fungal communities across the North American Arctic

Timling

Dahlberg²,

Walker

et al. 2012

Ecosphere

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“…Sampling effect may also account for these differences, as host preference differs by host taxa in temperate ecosystems (Molina et al, 1992;Tedersoo et al, 2008). Nevertheless, the fungal community dominants are non-selective of their hosts in subalpine to temperate ecosystems of the Northern Hemisphere (Horton and Bruns, 1998;Kennedy et al, 2003;Richard et al, 2005;Ishida et al, 2007;Ryberg et al, 2009). In most ecosystems studied to date, host genus or even species substantially affect the community composition of EcM fungi by slight non-significant shifts in the frequency of individual species (Ishida et al, 2007;Morris et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Low diversity and high host preference of ectomycorrhizal fungi in Western Amazonia, a neotropical biodiversity hotspot

et al. 2009

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Information about the diversity of tropical microbes, including fungi is relatively scarce. This study addresses the diversity, spatial distribution and host preference of ectomycorrhizal fungi (EcMF) in a neotropical rainforest site in North East Ecuador. DNA sequence analysis of both symbionts revealed relatively low richness of EcMF as compared with the richness of temperate regions that contrasts with high plant (including host) diversity. EcMF community was positively autocorrelated up to 8.5 ± 1.0-m distance-roughly corresponding to the canopy and potentially rooting area of host individuals. Coccoloba (Polygonaceae), Guapira and Neea (Nyctaginaceae) differed by their most frequent EcMF. Two-thirds of these EcMF preferred one of the host genera, a feature uncommon in boreal forests. Scattered distribution of hosts probably accounts for the low EcMF richness. This study demonstrates that the diversity of plants and their mycorrhizal fungi is not always related and host preference among EcMF can be substantial outside the temperate zone.

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“…Sebacina incrustans ECM of the alpine S. herbacea on a glacier forefront in the Austrian Alps was very abundant in 2005, but rather rare in 2006 . Salix reticulata together with Dryas octopetala (see above) are rich in sebacinalean ECMs in cliff ledges at Abisko, northern Sweden (Ryberg et al 2009). In the Bavarian Alps, S. appendiculata and S. waldsteiniana have sebacinalean ECMs (Garnica et al 2012, compare Fig.…”

Section: Sebacinalean Ectomycorrhizae (Ecm)mentioning

confidence: 99%

“…Rosaceae Ectomycorrhizal diversities on Dryas octopetala and Salix reticulata in an alpine cliff ecosystem have been studied by Ryberg et al (2009). They recorded Sebacinales as essential components in this highly specialized ecosystem.…”

Section: Sebacinalean Ectomycorrhizae (Ecm)mentioning

confidence: 99%

Enigmatic Sebacinales

Oberwinkler¹,

Riess²,

Bauer³

et al. 2013

Mycol Progress

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A historical retrospect and a taxonomic update will deal with Sebacina s.l. and s.str., Craterocolla, Efibulobasidium, Serendipita, Trem ell odendron, Trem ell oscypha, Tremellostereum, and Piriformospora, the Sebacinaceae, and the Sebacinales. Phylogenetic hypotheses for the order and subordinal taxa are discussed, including environmental sequence taxa. The cryptic biodiversity in Sebacinales is extensive but mostly unresolved with respect to the species involved.

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Ectomycorrhizal Diversity on Dryas octopetala and Salix reticulata in an Alpine Cliff Ecosystem

Cited by 70 publications

References 46 publications

Distribution and drivers of ectomycorrhizal fungal communities across the North American Arctic

Distribution and drivers of ectomycorrhizal fungal communities across the North American Arctic

Low diversity and high host preference of ectomycorrhizal fungi in Western Amazonia, a neotropical biodiversity hotspot

Enigmatic Sebacinales

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