Population genetics of ectomycorrhizal fungi: from current knowledge to emerging directions

Douhan, Greg W.; Vincenot, Lucie; Gryta, Hervé; Selosse, Marc‐André

doi:10.1016/j.funbio.2011.03.005

Cited by 124 publications

(118 citation statements)

References 252 publications

(373 reference statements)

Supporting

Mentioning

114

Contrasting

Order By: Relevance

“…In aboveground macro-organisms, body size is strongly linked to dispersal limitation and thus spatial aggregation (Nekola and White, 1999). In fungi, most of their body comprises vegetatively spreading mycelium in soil, reaching up to 100 m in extreme cases (Douhan et al, 2011). Therefore, in certain fungal groups, our sampling may capture the same individual multiple times, which less likely occurs in mesofauna or protists.…”

Section: Discussionmentioning

confidence: 99%

Stochastic distribution of small soil eukaryotes resulting from high dispersal and drift in a local environment

et al. 2015

View full text Add to dashboard Cite

A central challenge in ecology is to understand the relative importance of processes that shape diversity patterns. Compared with aboveground biota, little is known about spatial patterns and processes in soil organisms. Here we examine the spatial structure of communities of small soil eukaryotes to elucidate the underlying stochastic and deterministic processes in the absence of environmental gradients at a local scale. Specifically, we focus on the fine-scale spatial autocorrelation of prominent taxonomic and functional groups of eukaryotic microbes. We collected 123 soil samples in a nested design at distances ranging from 0.01 to 64 m from three boreal forest sites and used 454 pyrosequencing analysis of Internal Transcribed Spacer for detecting Operational Taxonomic Units of major eukaryotic groups simultaneously. Among the main taxonomic groups, we found significant but weak spatial variability only in the communities of Fungi and Rhizaria. Within Fungi, ectomycorrhizas and pathogens exhibited stronger spatial structure compared with saprotrophs and corresponded to vegetation. For the groups with significant spatial structure, autocorrelation occurred at a very fine scale (o2 m). Both dispersal limitation and environmental selection had a weak effect on communities as reflected in negative or null deviation of communities, which was also supported by multivariate analysis, that is, environment, spatial processes and their shared effects explained on average o10% of variance. Taken together, these results indicate a random distribution of soil eukaryotes with respect to space and environment in the absence of environmental gradients at the local scale, reflecting the dominant role of drift and homogenizing dispersal.

show abstract

Section: Discussionmentioning

confidence: 99%

Stochastic distribution of small soil eukaryotes resulting from high dispersal and drift in a local environment

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Despite the relatively short life (weeks) of the individual ECM roots, the diversity of ECM fungi can remain stable at scales >10 cm (Cox 2010;Douhan et al 2011;Izzo et al 2005;Koide et al 2007;Lian et al 2006). Crucially, ectomycorrhizas are always present as nearly all roots are colonised by mycorrhizal fungi-even under high nutrient availability-as shown by a meta-analysis (Cudlin et al 2007).…”

Section: How To Assess Fungal Distributionsmentioning

confidence: 99%

Monitoring ectomycorrhizal fungi at large scales for science, forest management, fungal conservation and environmental policy

Suz

Barsoum

Benham

et al. 2015

Annals of Forest Science

View full text Add to dashboard Cite

show abstract

“…In ECM fungi, genets often extend over metres (Douhan et al 2011) and thus can colonize the roots of multiple hosts to form ECM networks. Although the fine-scale assignment of a single ECM fungal genet to different co-occurring plants is still preliminary (Selosse et al 2002;Saari et al 2005), populations of the model species Laccaria amethystina growing under different host trees were not differentiated when investigated by microsatellites (Roy et al 2008), indicating that true generalist ECM fungal species do exist.…”

Section: Networking Abilities Of Mycorrhizal Fungimentioning

confidence: 99%

Interactions of fungi with other organisms

Perotto

Angelini

Bianciotto³

et al. 2013

Plant Biosystems - An International Journal Dealing with all As

View full text Add to dashboard Cite

Living organisms establish complex networks of mutualistic and antagonistic interactions in nature, which impact strongly on their own survival and on the stability of the whole population. Fungi, in particular, can shape natural as well as manmanaged ecosystems due to their ubiquitous occurrence and the range of interactions they establish with plants, animals and other microbes. This review describes some examples of mutualistic and antagonistic fungal interactions that are of particular interest for their ecological role, or because they can be exploited by man to improve plant health and/or productivity in sustainable agriculture and forestry.

show abstract

Population genetics of ectomycorrhizal fungi: from current knowledge to emerging directions

Cited by 124 publications

References 252 publications

Stochastic distribution of small soil eukaryotes resulting from high dispersal and drift in a local environment

Stochastic distribution of small soil eukaryotes resulting from high dispersal and drift in a local environment

Monitoring ectomycorrhizal fungi at large scales for science, forest management, fungal conservation and environmental policy

Interactions of fungi with other organisms

Contact Info

Product

Resources

About