Spatiotemporal distribution of an ectomycorrhizal community in an oligotrophic Swedish Picea abies forest subjected to experimental nitrogen addition: above- and below-ground views

Jonsson, Lage; Dahlberg, Anders; Brandrud, Tor-Erik

doi:10.1016/s0378-1127(99)00220-0

Cited by 92 publications

(69 citation statements)

References 34 publications

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“…Ectomycorrhizal fungal communities are highly diverse. Tree roots are exposed to several hundred different species of ectomycorrhizal fungi often with 20-50 species within a few hundred square meters (e.g., Dahlberg et al 1997;Jonsson et al 2000). ECM root species richness and/or community structure are influenced by a range of biotic and abiotic factors, including forest composition and chronosequences, host genotype, host specificity, soil type, soil moisture, season, natural nutrient gradients, activities of herbivores and plant parasites and the quality and quantity of organic matter.…”

Section: Introductionmentioning

confidence: 99%

Species and functional diversity of ectomycorrhizal fungal communities on Scots pine (Pinus sylvestris L.) trees on three different sites

Rudawska

Leski

Stasińska

2011

Annals of Forest Science

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Abstract& Introduction In the present study, we describe the aboveground (epigeous sporocarps) and belowground (ectomycorrhizal root tips and their exploration types) composition of ectomycorrhizal (ECM) fungal species on three 20-year-old Scots pine sites. & Objectives The aim of this study was to relate the composition of ECM species to history of the site, stand density and soil chemistry (pH, toxic metal content, etc.) and to show how variable site condition contribute to above-and belowground ECM community changes. & Results ECM fungi were identified by combination of morphotyping and direct sequencing of the PCR-amplified internal-transcribed spacer of n-rDNA. By identifying sporocarps and mycorrhizas, we detected a total of 54 taxa of ECM fungi: 28, 30, and 23 species at the Kórnik (control), Luboń (near the chemical plant) and Głogów (near the Copper Smelter, heavy metal influenced) sites, respectively. The sporocarp survey weakly reflected the analysis of ECM tips in terms of species composition, and largely supplemented the belowground view. Wilcoxina rehmii was the belowgrounddominating species at all three sites and was found at the highest abundance at the site established after the clear cut of poplars and with the highest tree density (Kórnik). At the Luboń site, subdominant mycorrhizas were formed by Phialophora finlandia. On the site near the Copper Smelter in Głogów, a significant shift in species composition was observed compared with the two other sites and a very large proportion of medium-fringe exploration type belonging to Atheliaceae was found. Despite the partial overlap in the nonmetric multi-dimensional scaling ordination, analysis of similarity revealed significant differences between tested sites. & Conclusion Because of the number of covarying site properties which may influence ECM communities, it is difficult, if not unfeasible, to separate the precise reasons of the distribution of ECM fungi. Continued research on the biodiversity of ECM fungi in field sites along an environmental gradient would greatly improve our understanding of the effects of ecological conditions on the functional diversity of mycorrhizal fungi.

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Section: Introductionmentioning

confidence: 99%

Species and functional diversity of ectomycorrhizal fungal communities on Scots pine (Pinus sylvestris L.) trees on three different sites

Rudawska

Leski

Stasińska

2011

Annals of Forest Science

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“…A spatial niche differentiation of ECM species and of ECM exploration types (1) could be due to specific physicochemical properties of soil horizons (47) and to differential resource utilization (35,39). However, despite acknowledgment of the functional importance of ECM fungi in host tree nutrition, very little is known about the distribution and abundance of ECM and about the spatiotemporal structure of the ECM community in forest soil (13,25,29,37,58).The present work addressed these issues for an oak forest in northeastern France by monthly sampling of fine roots in two soil horizons for 15 months and characterization of the structure and relative abundance of species of the ECM community in each sample. The objectives of the study were to describe the ECM community structure in time and space to obtain information about the spatiotemporal partitioning of the ECM species.…”

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confidence: 99%

mentioning

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Temporal Changes in the Ectomycorrhizal Community in Two Soil Horizons of a Temperate Oak Forest

Courty

Franc

Pierrat

et al. 2008

Appl Environ Microbiol

143

105

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The species structure of an ectomycorrhizal (ECM) community was assessed monthly for 15 months in the two horizons (A1 and A2) of an oak temperate forest in northeastern France. Ectomycorrhizal species were identified each month by internal transcribed spacer sequencing. Seventy-five fungal symbionts were identified. The community was dominated by Tomentellaceae, Russulaceae, Cortinariaceae, and Boletales. Four species are abundant in the study site: Lactarius quietus, Tomentella sublilacina, Cenococcum geophilum, and Russula sp1. The relative abundance of each species varied depending on the soil horizon and over time. Some species, such as L. quietus, were present in the A1 and A2 horizons. C. geophilum was located particularly in the A2 horizon, whereas T. sublilacina was more abundant in A1. Some species, such as Clavulina sp., were detected in winter, while T. sublilacina and L. quietus were present all year long. Our results support the hypothesis that a rapid turnover of species composition of the ECM community occurs over the course of a month. The spatial and temporal unequal distribution of ECM species could be explained by their ecological preferences, driven by such factors as root longevity, competition for resources, and resistance to environmental variability.The fine roots of social tree species in temperate and boreal forests are symbiotically associated with fungi (52), forming composite organs called ectomycorrhizas (ECM). The ECM fungi play a crucial role in tree health by enhancing the nutrient acquisition, drought tolerance, and pathogen resistance of their hosts. ECMs efficiently take up water and organic and inorganic nutrients from the soil via the extramatricial mycelium and translocate these to colonized tree roots, receiving carbohydrates from the host in return (52). Most of the ectomycorrhizal roots are located in the top 20 centimeters of the soil, an area which is enriched in organic matter and where nutrients are concentrated (50). The ECM fungal community is species rich at the forest stand level, where hundreds of different fungal symbionts can be identified by morphotyping and DNA-based molecular methods (13,17,36,56).Beside its species composition, the structure is an important characteristic of the ECM community. Differences in ECM community structure on different scales are well documented: on the ecosystem scale (postdisturbance or postplanting successions) and along forest dynamics (4, 28, 56, 65), on the seasonal scale (6,8,20,33,54), and along spatial dimensions (vertical scale [13,14,24,49] and horizontal scale [36,58]). In a microsite or on a forest strand scale, species are distributed neither uniformly nor randomly but rather are aggregated in patches or distributed along gradients (9,12,19,24,44). The spatial heterogeneity of communities is important in terms of succession, adaptation, maintenance of species diversity, interspecific competition, and community stability (38). A spatial niche differentiation of ECM species and of ECM exploration types (1) could be du...

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“…Für viele Pilzarten der Ektomykorrhizen wurde eine Wirtsspezifität oder zumindest eine Wirtspräferenz festgestellt (Molina et al 1992). Jonsson et al (2000) stellt die Vermutung auf, das dass Vorkommen von Kohlenhydraten die Wurzeldichte und damit auch die Mykorrhiza beeinflusst, was von der Photosyntheseleistung der Pflanzen abhängt, die wiederrum von den klimatischen Bedingungen abhängt. Wenn das Klima zwischen den Jahren wechselt, verändert sich auch die ECM-Gesellschaft.…”

Section: Diversität Der Mykorrhizenunclassified

“…Dieser markante Hyphenmantel ermöglicht aber auch eine eindeutige Identifizierung. Diese Pilzart wurde in vielen Studien, in allen Bodenprofilen, Entwicklungsstadien der Bestände, allen Altersklassen und zu jeder Jahreszeit an vielen verschiedenen Baumarten und auf fast allen Kontinenten gefunden (Dickie 2007), wobei er überwiegend in der organischen Auflage gefunden wird (Jonsson et al 2000). Auch in dieser Studie wurde C. geophilum an allen Baumarten und auf allen Flächen häufig gefunden.…”

Section: Evaluation Möglicher Funktionen Der Ektomykorrhizenunclassified

Diversität der Ektomykorrhizen in verschieden artenreichen Laubbaumbeständen im Nationalpark Hainich (Thüringen)

Lang¹

2008

Göttinger Forstwissenschaften

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Spatiotemporal distribution of an ectomycorrhizal community in an oligotrophic Swedish Picea abies forest subjected to experimental nitrogen addition: above- and below-ground views

Cited by 92 publications

References 34 publications

Species and functional diversity of ectomycorrhizal fungal communities on Scots pine (Pinus sylvestris L.) trees on three different sites

Species and functional diversity of ectomycorrhizal fungal communities on Scots pine (Pinus sylvestris L.) trees on three different sites

Temporal Changes in the Ectomycorrhizal Community in Two Soil Horizons of a Temperate Oak Forest

Diversität der Ektomykorrhizen in verschieden artenreichen Laubbaumbeständen im Nationalpark Hainich (Thüringen)

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