High diversity of ectomycorrhizal fungi associated with Arctostaphylos uva-ursi in subalpine and alpine zones: Potential inoculum for afforestation

Krpata, Doris; Mühlmann, Oliver; Kuhnert, Regina; Ladurner, Heidi; Gôbl, F.; Peintner, Ursula

doi:10.1016/j.foreco.2007.05.012

Cited by 39 publications

(22 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, it has been shown for bearberry ( Arctostaphylos spp. ), a species belonging to the family of Ericaceae which usually form ericoid mycorrhiza, to interact under unfavourable environmental conditions with pine‐associated ECM fungi (Krpata et al., ; Tedersoo, Hansen, Perry, & Kjøller, ). Harsh environmental conditions may, however, limit the growth and performance of fungi on these alternative hosts (Krpata et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…Persistent spore banks above the tree line could be present in particular for pine-associated fungal species as a result of a higher tree line in the past (Gehrig-Fasel, Guisan, Zimmermann, & Niklaus, 2007;Pini et al, 2017). In many regions of the Alps, tree lines have been lowered by past human disturbances and deforestation (Carrer, Castagneri, Popa, Pividori, & Lingua, 2018;Krpata et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Spatial patterns of pathogenic and mutualistic fungi across the elevational range of a host plant

et al. 2018

View full text Add to dashboard Cite

Fungi are both agents of disease and mutualistic partners of plants. Previous studies have tested the effects of abiotic or biotic factors on plant‐associated fungal communities in isolation. However, to better understand patterns of plant–fungal associations, the combined effects of abiotic and biotic drivers across environmental gradients may be important. We investigated the effects of temperature, pH, soil moisture, vegetation cover and distance to host plant on the occurrence and abundance of fungi associated with Swiss stone pine (Pinus cembra). We did this by DNA metabarcoding 288 soil samples taken across and beyond the elevation range of P. cembra (i.e. 1,850–2,250 m a.s.l.) in two valleys in the Swiss Alps. We modelled the effects of abiotic and biotic factors on DNA read abundance of pathogenic and mutualistic fungal operational taxonomic units (OTUs) associated with P. cembra. We also tested whether abiotic and biotic factors differentially affected fungi of varying host specificity (i.e. host generalists, host specialists). We found that the occurrences of both host generalist and specialist fungi exceeded the current elevational range of their host plant. Abiotic factors had only minor effects on the abundances of all fungal OTUs. However, we found positive effects of the host plant on the abundance of a host specialist pathogenic fungus, providing support for a Janzen–Connell effect of high pathogen accumulation close to conspecific host plants. We also found a positive response to the host plant in a specialist ectomycorrhizal fungus, suggesting an “inverse” Janzen–Connell effect. Synthesis. Our findings imply that negative distance dependence shapes not only the distribution of host‐specific fungal pathogens, but also host‐specific fungal mutualists. We conclude that the occurrence of both pathogenic and mutualistic fungi beyond the current elevational range of host plants may determine their potential range shifts under projected climate warming.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Spatial patterns of pathogenic and mutualistic fungi across the elevational range of a host plant

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In fact, assessment of ECMF species colonizing Arctostaphylos uva-ursi above treeline indicates little host specificity; a characteristic which may be related to the successful afforestation of sites dominated by Arctostaphylos. [22]). …”

Section: Discussionmentioning

confidence: 99%

Availability of Ectomycorrhizal Fungi to Black Spruce above the Present Treeline in Eastern Labrador

Reithmeier

Kernaghan

2013

PLoS ONE

View full text Add to dashboard Cite

Ectomycorrhizal fungi (ECMF) are an important biotic factor in the survival of conifer seedlings under stressful conditions and therefore have the potential to facilitate conifer establishment into alpine and tundra habitats. In order to assess patterns of ectomycorrhizal availability and community structure above treeline, we conducted soil bioassays in which Picea mariana (black spruce) seedlings were grown in field-collected soils under controlled conditions. Soils were collected from distinct alpine habitats, each dominated by a different ectomycorrhizal host shrub: Betula glandulosa, Arctostaphylos alpina or Salix herbacaea. Within each habitat, half of the soils collected contained roots of ectomycorrhizal shrubs (host+) and the other half were free of host plants (host−). Forest and glacial moraine soils were also included for comparison. Fungi forming ectomycorrhizae during the bioassays were identified by DNA sequencing. Our results indicate that ECMF capable of colonizing black spruce are widespread above the current tree line in Eastern Labrador and that the level of available inoculum has a significant influence on the growth of seedlings under controlled conditions. Many of the host− soils possessed appreciable levels of ectomycorrhizal inoculum, likely in the form of spore banks. Inoculum levels in these soils may be influenced by spore production from neighboring soils where ectomycorrhizal shrubs are present. Under predicted temperature increases, ectomycorrhizal inoculum in soils with host shrubs as well as in nearby soils without host shrubs have the potential to facilitate conifer establishment above the present tree line.

show abstract

“…2007 Comments P. tristis is widely distributed in the northern hemisphere and has also been detected as mycobiont of deciduous trees and conifers (e.g. Agerer 1994; Krpata et al 2007;Parrent et al 2006)…”

Section: Tomentella Fibrosa (Berk and Curt) Kõljalgmentioning

confidence: 99%

“…The lack of woody substrate in arctic-alpine habitats determined that tomentelloid fungi were overlooked in such environments. But they were discovered to be the dominant ectomycorrhizal partner of alpine ectotrophic host plants like Kobresia (Mühlmann and Peintner 2008a), Salix (Mühlmann and Peintner 2008b), Arctostaphylos (Krpata et al 2007), Dryas (Ryberg et al 2009) and Bistorta (= Persicaria or Polygonum) (Mühlmann et al 2008;Sonstebo 2002). During thorough searches, many tomentelloid fruiting bodies could be found; these easily overlooked fruiting bodies occurred on the lower surface of stones above cavities, on plant debris or on cutting faces of soil or turf.…”

Section: Introductionmentioning

confidence: 99%

Tomentella alpina and other tomentelloid taxa fruiting in a glacier valley

Peintner

Dämmrich²

2011

Mycol Progress

Self Cite

View full text Add to dashboard Cite

Tomentella is a genus of resupinate basidiomycetes usually fruiting on rotten wood. Ecological studies based on molecular methods have reported many Tomentella species as mycobionts of alpine ectomycorrhizal plants, thus highlighting their importance for plant establishment and development under extreme conditions. For the first time, we report fruiting of eight tomentelloid species in an alpine site, and describe Tomentella alpina as a new species. In the rDNA ITS phylogeny, Tomentella alpina forms a distinct clade in the T. stuposa complex, from which it can be clearly separated based on spore size and shape. Closely related taxa are briefly described, and synonymy of Tomentella fungicola with T. stuposa is rejected. Tomentella alpina was found to be one of the most important mycorrhizal partners of Kobresia myosuroides, Bistorta vivipara and Salix herbacea at this alpine site. The mutualistic association with plants is a very successful life strategy for Tomentella spp. growing in primary successional habitats, where the lack of organic matter is generally a growth-limiting factor.

show abstract

High diversity of ectomycorrhizal fungi associated with Arctostaphylos uva-ursi in subalpine and alpine zones: Potential inoculum for afforestation

Cited by 39 publications

References 26 publications

Spatial patterns of pathogenic and mutualistic fungi across the elevational range of a host plant

Spatial patterns of pathogenic and mutualistic fungi across the elevational range of a host plant

Availability of Ectomycorrhizal Fungi to Black Spruce above the Present Treeline in Eastern Labrador

Tomentella alpina and other tomentelloid taxa fruiting in a glacier valley

Contact Info

Product

Resources

About