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308 results for “fungal community”
Fungal trait-environment relationships in wood-inhabiting communities of boreal forest patches
<p>Fungal traits can provide a mechanistic understanding of how wood-inhabiting fungi interact with their environment and how that influences community assembly in deadwood. However, fungal trait exploration is relatively new and almost no studies measure fungal traits in their environment. In this study we tested species- and trait-environment relationships in reproducing fungal communities inhabiting 571 Norway spruce (<em>Picea abies</em>) logs in 55 isolated forest patches (0.1-9.9 ha) of different naturalness types, located in Northern boreal Sweden. The studied patches were (1) semi-natural set-aside patches within highly managed landscapes, or (2) old-growth natural patches located in an unmanaged landscape. We tested species and trait relationships to deadwood substrate and forest patch variables. We measured mean fruit body size and density for each of the 19 species within communities. Traits assembled in relation to log decay stage and forest patch naturalness, illustrating the important role of deterministic environmental filtering in shaping reproducing wood-inhabiting fungal communities. Early decay stage communities had larger, less dense, annual fruiting bodies of half-resupinate type and were more often white-rot fungi. Species rich mid decay stage communities had mixed trait assemblages with more long lived perennial fruit bodies of intermediate size, and both brown- and white-rot fungi equally represented. Finally, late decay stage communities had smaller, denser and perennial fruit bodies, more often of the brown-rot type. The relationships between the studied traits and decay stages were similar in both set-aside and natural patches. However, set-aside semi-natural patches in highly managed landscapes more frequently supported species with smaller, perennial, and resupinate fruit bodies compared to natural patches in an unmanaged landscape.</p> <p><em>Synthesis</em></p> <p>We found that log decay stage was the primary driver of fungal community assembly of species and traits in isolated forest patches. Our results suggest that decay stage filters four reproduction traits (fruit body density, size, lifespan and type) and one resource-use trait (white or brown rot). Our results highlights, for the first time, that communities with diverse fungal reproductive traits are maintained foremost across all deadwood decay stages under different forest naturalness conditions.</p>
Data and R code used in Hennecke et al. "Plant species richness and the root economics space drive soil fungal communities"
<p>To investigate how plant diversity and root traits relate to soil fungal communities, in 2021 we collected trait data from plots in the Jena Experiment (https://the-jena-experiment.de; funded by the DFG FOR 5000) and characterized fungal communities by sequencing, respiration and lipid fatty acid quantification. </p>
Tree communities and soil properties influence fungal community assembly in neotropical forests
<p>The influence exerted by tree communities, topography and soil chemistry on the assembly of macrofungal communities remains poorly understood, especially in highly diverse tropical forests. Here, we used a large dataset that combines inventories of macrofungal Basidiomycetes fruiting bodies, tree species composition and measurements for 16 soil physico-chemical parameters, collected in 34 plots located in four sites of lowland rainforests in French Guiana. Plots were established on three different topographical conditions: hilltop, slope and seasonally flooded soils. We found hyperdiverse Basidiomycetes communities, mainly comprising members of Agaricales and Polyporales. Phosphorus, clay contents and base saturation in soils strongly varied across plots and shaped the richness and composition of tree communities. The latter composition explained 23% of the variation in the composition of macrofungal communities, probably through high heterogeneity of the litter chemistry and selective effects of biotic interactions. The high local heterogeneity of habitats influenced the distribution of both macrofungi and trees, as a result of diversed local soil hydromorphic conditions associated to contrasting soil chemistry. This first regional study across habitats of French Guiana forests revealed new niches for macrofungi, such as ectomycorrhizal ones, and illustrate how macrofungi inventories are still paramount to can be to understand the processes at work in the tropics.</p>
Data for the article: Coupling of leaf elemental traits with root fungal community composition reveals a plant resource acquisition strategy in a desert ecosystem
<p><em>Purpose</em>: Plant-associated microbes enhance nutrient access and stress tolerance of the host species, and therefore, are crucial for plant traits and resource strategies. However, the links between aboveground plant traits and belowground microbes related to plant resource strategies under stressful conditions remain poorly understood.</p> <p><em>Methods</em>: We tested the relationships between leaf traits linked to water (carbon isotopic composition, δ<sup>13</sup>C) and nutrient use (elemental concentrations and stoichiometry) with microbial compositions in roots and rhizospheres of two dominant species (<em>Artemisia ordosica</em> and <em>Leymus secalinus</em>) in the Mu Us Desert, northern China.</p> <p><em>Results</em>: <em>L. secalinus</em> exhibited higher Mg and Mn concentrations, N:P ratios, stoichiometric flexibility, and root fungi:bacteria ratios, but lower foliar K and Ca concentrations and δ<sup>13</sup>C values than <em>A. ordosica</em>. The leaf N:P of <em>L. secalinus</em> increased with the root fungi:bacteria ratios, whereas the leaf N:P of <em>A. ordosica</em> decreased with the root fungi:bacteria ratios. The plant elemental levels (P, N, K, Ca, Mn, and δ<sup>13</sup>C) of <em>L. secalinus</em> but not <em>A. ordosica</em> were significantly related to their root fungal composition. Additionally, the random forest model identified four key fungal families in predicting leaf elemental traits for both plant species.</p> <p><em>Conclusion</em>: The results suggested tight coupling and coordination between leaf elemental traits and root microbial compositions (especially fungal communities) related to plant resource acquisition strategies. By regulating aboveground and belowground feedback loops through trait flexibility and root microbial compositions, the studied plant species can sustain their resource strategies under stressful environmental conditions.</p>
eDNA metabarcoding reveals high soil fungal diversity and variation in community composition among Spanish cliffs
<p><span>Environments characterized by physical extremes harbor unique species diversity with particular adaptations. Cliffs are harsh environments for organisms but host a great diversity of specialized plants with many endemics, rare and even endangered species. It is, however, less known which fungal diversity the cliff habitats contain and whether it differs among different cliff locations. We thus sampled soil from three separate cliff locations in the North, Centre and South of Spain and used eDNA metabarcoding to determine fungal diversity. To better understand whether cliff specialist plants may promote particular fungal communities, we have sampled soil from crevices with cliff specialist plants and no apparent plants as controls. Major lifestyles found in cliff soils were saprotrophs, and major fungal orders were Dothideomycetes, Sordariomycetes, and Eurotiomycetes, while the amount of symbiotrophic fungi was relatively low. We found no significant differences in fungal amplicon sequence variant (ASV) richness among the three sampled locations, but the sites were significantly different in their community composition and their main indicator species. Overall, there were no significant differences in fungal ASV richness or composition between soils from cliff specialist plants and soils without plants, suggesting a unique fungal diversity in cliff soils independent from specialized plants. However, preliminary findings on soils of the specialist cliff plant Sedum dasyphyllum against control soils suggest that the presence of a specialist plant may be a relevant factor affecting the specificity of the fungal community in cliff soils. Our results indicate the existence of particular cliff fungal communities in each location, and that, despite limited and poorly developed soils and harsh conditions, cliffs can harbor a great diversity of fungal species, comparable to other ecosystems of Spain. This study points out that some fungi may be cliff-specific, shaping particular communities that mediate plant adaptations to cliffs' extreme conditions.</span></p>
Sequences of bacterial and fungal communities by Next-Generation Sequencing (NGS) associated to wall patinas
<p>These data are the DNA sequences obtained from samples of house plaster with chromatic alteration facies. Three areas (VA1, VA3 and VNA6) of the wall were sampled. the DNA was extracted using the Spin Kit For Soil MPBio. </p> <p>The DNA extracts were sequenced by NGS using Illumina MiSeq</p> <p>Two regions were selected V3V5 16S for Bacteria and ITS1 ITS for Fungi. </p>
Interactions between belowground traits and rhizosheath fungal and bacterial communities for phosphorus acquisition
<p>1. Plant-soil microbes interactions play a central role in plant nutrient acquisition and thus ecosystem functioning and nutrient availability in agroecosystems. Adjustments in root morphology, root exudation and associations with microorganisms such as arbuscular mychorrizal fungi are common for phosphorus acquisition. Yet how plant belowground functional traits interact with microbial communities for P-acquisition remains largely unknown, limiting our understanding of phosphorus availability in agroecosystems.</p> <p>2. Interactions between belowground functional traits and rhizosheath soil microbial communities for P-acquisition were investigated across eight herbaceous species with contrasting root traits. Root morphological and physiological traits involved in P-acquisition were quantified simultaneously with PLFA (phospholipid fatty acid) and NLFA (neutral lipid fatty acid) microbial bioindicators.</p> <p>3. Multiple correlations were observed between root morphology, root exudates and rhizosheath fungal and bacterial communities. Root exudates and in particular release of malate and malonate were strongly linked with indicators of Gram-negative bacteria, which were correlated with changes in rhizosheath soil P concentration and plant P content.</p> <p>4. Our results suggest that root exudation of carboxylates may play an important role in plant-soil microorganism interactions for P-acquisition, underlining their likely role in shaping microbial communities. Incorporating these interactions in biogeochemical models would lead to better predicting power and understanding of P cycling and ecosystem functioning.</p>
18S rDNA OTU table of fungal community in a tropical forest
<p>This study aims to elucidate how fungal community responses to N deposition</p>
Soil fungal communities contribute to the positive diversity-productivity relationship of tree communities under contrasting water availability
<p><span>Plant diversity has often been linked to increased productivity; however, this apparent diversity-productivity relationship may rely on inter-trophic interactions such as those between plants and soil microbes. Soil fungi can create complementarity between plant species via altered plant resource partitioning, facilitation via fungal networks, or biotic feedbacks, thereby promoting plant diversity-productivity relationships. Furthermore, these relationships are likely to be context-dependent in response to resource availability. </span></p> <p><span>We used a biodiversity-ecosystem function experiment with trees exposed to high and low water availability treatments to determine the contribution of soil fungal communities to the diversity-productivity relationship in tree communities. We used amplicon sequencing of soil fungi to assess fungal richness, community composition, and richness of functional guilds. We then applied structural equation modelling to determine relationships between tree diversity, fungal communities, and tree productivity and the role of water availability in these relationships.</span></p> <p><span>Tree species richness and functional diversity both increased above-ground tree productivity and influenced soil fungal community composition. Fungal community composition had a direct impact on tree productivity and enhanced net diversity effects on productivity. Therefore, fungal communities mediated a positive, indirect effect of tree richness on productivity. While total fungal richness was not associated with tree diversity, pathogen richness decreased and mycorrhizal richness increased with tree richness. Pathogen and mycorrhizal richness had either no impact or a weak negative effect on productivity. Tree species traits strongly affected fungal communities and these changes promoted productivity. Finally, water availability greatly influenced fungal communities but did not interact with tree diversity to affect productivity; indicating possible resilience of tree communities to altered precipitation regimes and associated changes in fungal communities.</span></p> <p><span>Synthesis: Our study highlights the crucial role that fungal communities play in shaping the relationship between tree diversity, traits, and productivity, and resilience to altered water availability. </span></p>
Soil amendment with biochar and manure alters wood stake decomposition and fungal community composition
<p><span>Biochar and manure can be used for </span>sustainable land management<span>. However, little is known about how soil amendments might affect surface- and below-ground microbial processes and subsequent wood decomposition</span>. In a split-split-split plot design, we amended soil with two rates of manure (whole plot; 0 and 9 Mg ha<sup>-1</sup>) and biochar (split-plot; 0 and 10 Mg ha<sup>-1</sup>). <span>Wood stakes of three species (hybrid poplar, triploid<em> Populus tomentosa</em> Carr.; aspen, <em>Populus tremuloides</em> Michx.; and pine, <em>Pinus taeda</em> L.) were placed in two positions (horizontally on the soil surface, and inserted vertically in the mineral soil), which served as </span>a substrate for fungal growth<span>. In 3 years, the decomposition rate (mass loss), moisture content, and fungal community (via high-throughput sequencing methods) of stakes were evaluated. Results indicated</span> that <span>biochar and/or manure increased the wood stake decomposition rates, moisture content, and operational taxonomic unit (OTU) abundance. However, the richness and diversity of fungi </span>were<span> dependent on wood stake position (surface > mineral), species (pine > the two <em>Populus</em>), and sample dates. This study highlights that soil amendment with biochar and/or manure can alter the fungal community, which in turn can enhance an important soil process (i.e., decomposition). </span></p>
Changes in nitrogen and phosphorus availability driven by secondary succession in temperate forests shape soil fungal communities and function
<p><span>Soil fungal community plays an important role in forest ecosystems, and forest secondary succession is a crucial driver of soil fungal community. However, the driving factors of fungal community and function during temperate forest succession and their potential impact on succession processes are poorly understood. In this study, we investigated the dynamics of the soil fungal community in three temperate forest secondary successional stages (shrublands, coniferous forests, and deciduous broadleaf forests) using high-throughput DNA sequencing coupled with functional prediction via the FUNGuild database. We found that fungal community richness, α-diversity, and evenness decreased significantly during the succession process. Soil available phosphorus and nitrate</span> <span>nitrogen decreased significantly after initial succession occurred, and redundancy analysis showed that both were significant predictors of soil fungal community structure. Among functional groups, fungal saprotrophs as well as pathotrophs represented by plant pathogens were significantly enriched in the early-successional stage, while fungal symbiotrophs represented by ectomycorrhiza were significantly increased in the late-successional stage. The abundance of both saprotroph and pathotroph fungal guilds was positively correlated with soil nitrate</span> <span>nitrogen and available phosphorus content. Ectomycorrhizal fungi were negatively correlated with nitrate</span> <span>nitrogen and available phosphorus content and positively correlated with ammonium</span> <span>nitrogen content.</span> <span>These results indicated that the dynamics of fungal community and function reflected the changes in nitrogen and phosphorus availability caused by the secondary succession of temperate forests. The fungal plant pathogen accumulated in the early-successional stage and ectomycorrhizal fungi accumulated in the late-successional stage may have a potential role in promoting forest succession. These findings contribute to a better understanding of the response of soil fungal communities to the secondary forest succession process and highlight the importance of fungal communities during temperate forest succession.</span></p>
Slow soil enzyme recovery following invasive tree removal through gradual changes in bacterial and fungal communities
<p><span>Biological invasions of plants have profound effects on ecosystem functioning by directly and indirectly altering soil microbiota, especially when invasive plants co-invade with their associated microbiomes. Ecosystem functions may recover slowly following invader removal, with implications for restoration. </span></p> <p><span>We investigated the recovery of soil ecosystem function (measured as soil enzymes) following the removal, at different densities and times, of invasive <em>Pinus</em> spp. in New Zealand, and how different enzymatic activities responded to pine legacies. </span></p> <p><span>Enzymatic activities were driven by pine legacies via both abiotic (soil nutrients) and biotic (fungi and bacteria) soil properties, with different enzymes showing distinct patterns. The activity of the enzymes cellobiohydrolase (cellulose degrading), β-glucosidase (cellulose degrading), N-acetyl-glucosaminidase (chitin degrading), laccase (lignin oxidising) and acid phosphatase (organic phosphate hydrolysing) were influenced by time since pine removal and by pine density at removal via effects on biotic communities. In comparison, Mn-peroxidase (lignin oxidising) was positively correlated with density of pines at removal and was negatively correlated with time since removal and was only influenced by fungal communities. </span></p> <p><em><span>Synthesis</span></em><span>. The recovery of soil enzymatic function following invasive species removal is slow, and dependent on pine legacies through the gradual changes in fungal and bacterial communities. The cascading effects of these changes suggest potential implications for the success of future plant establishment and restoration of co-invaded ecosystems.</span></p>
Data from: Host plant height explains the effect of nitrogen enrichment on arbuscular mycorrhizal fungal communities
<p><span>Nitrogen (N) enrichment is widely known to affect the root-associated arbuscular mycorrhizal fungal (AMF) community in different ways, for example, via altering soil properties and/or shifting host plant functional traits. However, empirical knowledge of their relative importance is still lacking. </span><span>Using a long-term N addition experiment, we measured the AMF community taxonomic and phylogenetic diversity at the single plant species (roots of 15 plant species) and plant community (mixed roots) levels. We also measured four functional traits of 35 common plant species along the N addition gradient. </span></p> <p><span>We found divergent responses of AMF diversity to N addition for host plants with different innate heights (i.e., plant natural height under unfertilized treatment). Furthermore, our data showed that species-specific responses of AMF diversity to N addition were negatively related to the change in maximum plant height. When scaling up to the community level, N addition affected AMF diversity mainly by increasing the maximum plant height, rather than altering soil properties.</span></p> <p><span>Our results highlight that </span><span>plant height</span><span> drives the AMF community dynamics under nitrogen enrichment at both species and community levels, thus providing important implications for understanding the response of AMF diversity to anthropogenic nitrogen deposition.</span></p>
Data from: Prolonged impacts of past agriculture and ungulate overabundance on soil fungal communities in restored forests
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Soil fungal communities contribute to the positive diversity-productivity relationship of tree communities under contrasting water availability
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Data for the article: Coupling of leaf elemental traits with root fungal community composition reveals a plant resource acquisition strategy in a desert ecosystem
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Data from: Does warming by open-top chambers induce change in the root-associated fungal community of the arctic dwarf shrub Cassiope tetragona (Ericaceae)?
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Data from: Effects of pesticides on soil bacterial, fungal and protist communities, soil functions and crop quality in vineyards
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Fungal sporocarps house diverse and host-specific communities of fungicolous fungi
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Light availability and light demand of plants shape the arbuscular fungal communities in their roots
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