Soil factors influencing ectomycorrhizal sporome distribution in neotropical forests dominated by Pinus montezumae, Mexico

Reverchon, Frédérique; Ortega-Larrocea, María del Pilar; Pérez‐Moreno, Jesús

doi:10.1007/s10267-011-0136-1

Cited by 19 publications

(17 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is unclear whether N availability of native soils, even on these productive temperate sites, ever achieves the apparently detrimental levels of N found in polluted or fertilized soils, or whether other interactions (inadequate moisture, unsuitable pH) would explain the discrepancy in community response to added N. In addition, host genera generally suited to low‐fertility soils, such as Pinus (Reverchon et al . ) or Quercus (Zhang et al . ), may not host the same diversity of fungi on productive sites as other EcM hosts.…”

Section: Discussionmentioning

confidence: 99%

“…Nonmycorrhizal roots were from axenically raised seedlings, and were not excised in the fall sampling (N = 124; least square means and SE as error bars). or whether other interactions (inadequate moisture, unsuitable pH) would explain the discrepancy in community response to added N. In addition, host genera generally suited to low-fertility soils, such as Pinus (Reverchon et al 2012) or Quercus (Zhang et al 2013), may not host the same diversity of fungi on productive sites as other EcM hosts. We can confirm, at least with coastal Douglas-fir, a diverse assemblage of EcM fungal species from a number of genera (Amphinema, Clavulina, Inocybe, Lactarius, Russula, Sebacina, Thelephora, Tomentella and Tylospora) that are most strongly associated with moist, acidic, N-rich sites.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Species turnover (β‐diversity) in ectomycorrhizal fungi linked to uptake capacity

et al. 2015

View full text Add to dashboard Cite

Ectomycorrhizal (EcM) fungal communities may be shaped by both deterministic and stochastic processes, potentially influencing ecosystem development and function. We evaluated community assembly processes for EcM fungi of Pseudotsuga menziesii among 12 sites up to 400 km apart in southwest British Columbia (Canada) by investigating species turnover (β-diversity) in relation to soil nitrogen (N) availability and physical distance. We then examined functional traits for an N-related niche by quantifying net fluxes of NH4+, NO3- and protons on excised root tips from three contrasting sites using a microelectrode ion flux measurement system. EcM fungal communities were well aligned with soil N availability and pH, with no effect of site proximity (distance-decay curve) on species assemblages. Species turnover was significant (β(1/2) = 1.48) along soil N gradients, with many more Tomentella species on high N than low N soils, in contrast to Cortinarius species. Ammonium uptake was greatest in the spring on the medium and rich sites and averaged over 190 nmol/m(2)/s for Tomentella species. The lowest uptake rates of NH4+ were by nonmycorrhizal roots of axenically grown seedlings (10 nmol/m(2)/s), followed by Cortinarius species (60 nmol/m(2)/s). EcM roots from all sites displayed only marginal uptake of nitrate (8.3 nmol/m(2)/s). These results suggest NH4+ uptake capacity is an important functional trait influencing the assembly of EcM fungal communities. The diversity of EcM fungal species across the region arguably provides critical belowground adaptations to organic and inorganic N supply that are integral to temperate rainforest ecology.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Species turnover (β‐diversity) in ectomycorrhizal fungi linked to uptake capacity

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Adaptations to different environmental conditions (Reverchon et al . ) as well as biotropic interactions (Pickles et al . ) can influence distribution of species.…”

Section: Discussionmentioning

confidence: 99%

Substantial compositional turnover of fungal communities in an alpine ridge‐to‐snowbed gradient

et al. 2013

View full text Add to dashboard Cite

The main gradient in vascular plant, bryophyte and lichen species composition in alpine areas, structured by the topographic gradient from wind-exposed ridges to snowbeds, has been extensively studied. Tolerance to environmental stress, resulting from wind abrasion and desiccation towards windswept ridges or reduced growing season due to prolonged snow cover towards snowbeds, is an important ecological mechanism in this gradient. The extent to which belowground fungal communities are structured by the same topographic gradient and the eventual mechanisms involved are less well known. In this study, we analysed variation in fungal diversity and community composition associated with roots of the ectomycorrhizal plant Bistorta vivipara along the ridge-to-snowbed gradient. We collected root samples from fifty B. vivipara plants in ten plots in an alpine area in central Norway. The fungal communities were analysed using 454 pyrosequencing analyses of tag-encoded ITS1 amplicons. A distinct gradient in the fungal community composition was found that coincided with variation from ridge to snowbeds. This gradient was paralleled by change in soil content of carbon, nitrogen and phosphorus. A large proportion (66%) of the detected 801 nonsingleton operational taxonomic units (OTUs) were ascomycetes, while basidiomycetes dominated quantitatively (i.e. with respect to number of reads). Numerous fungal OTUs, many with taxonomic affinity to Sebacinales, Cortinarius and Meliniomyces, showed distinct affinities either to ridge or to snowbed plots, indicating habitat specialization. The compositional turnover of fungal communities along the gradient was not paralleled by a gradient in species richness.

show abstract

“…Bioassayed seedlings Field seedlings Field adults although S. bovinus, S. granulatus and S. luteus were present as basidiocarps in the study area (Reverchon et al 2012b). Another difference was the absence of Sebacinaceae in the resistant propagules, given its abundance on the roots of P. montezumae in the field (Reverchon et al 2012a).…”

Section: Ecm Taxamentioning

confidence: 96%

“…In neotropical ecosystems especially, the majority of works has focused on sporocarp surveys (Montoya et al 2004;Reverchon et al 2012b) and belowground ECM fungal communities have been overlooked until recently Smith et al 2011;Reverchon et al 2012a). The diversity and ecological importance of ECM propagules in neotropical forests are of particular interest where these ecosystems are subjected to frequent fires or chronic drought and where the availability of ECM inoculum might have been altered (Nara 2006).…”

mentioning

confidence: 99%

Structure and diversity of ectomycorrhizal resistant propagules in Pinus montezumae neotropical forests and implications for seedling establishment

2015

Self Cite

View full text Add to dashboard Cite

External mycelium Microcosms Mycorrhizal symbiosis a b s t r a c t Ectomycorrhizal (ECM) fungal communities have been relatively poorly documented in neotropical forests. We analyzed the structure and diversity of the ECM resistant propagules present in the soil of Mexican neotropical forests dominated by Pinus montezumae.Soil samples were collected under mature P. montezumae, and microcosms were set up with bioassayed seedlings. The ECM propagules were formed by relatively few taxa that were evenly distributed across the sampled area. Some taxa, such as Rhizopogon spp. and Atheliaceae sp., formed an extensive mycelial system, which is likely to confer them with an advantage for seedling colonization. We also compared the species composition of the ECM propagules with the ECM communities previously assessed on the roots of seedlings and adult trees. They were represented by different taxa, although similarity analyses did not detect differences in species occurrence. Only two taxa, belonging to the Atheliaceae family, were shared between field and bioassayed seedlings, whereas 12 taxa were common to field seedlings and adult trees. The lower similarity between bioassayed and field seedlings suggests that fungal taxa found as resistant propagules are not active in mycelial networks in field conditions and that mycorrhizal network-mediated colonization may be prevalent in this neotropical forest. /locate /m yc m y c o s c i e n c e 5 6 ( 2 0 1 5 ) 2 1 4 e2 2 3 http://dx.

show abstract

Soil factors influencing ectomycorrhizal sporome distribution in neotropical forests dominated by Pinus montezumae, Mexico

Cited by 19 publications

References 46 publications

Species turnover (β‐diversity) in ectomycorrhizal fungi linked to uptake capacity

Species turnover (β‐diversity) in ectomycorrhizal fungi linked to uptake capacity

Substantial compositional turnover of fungal communities in an alpine ridge‐to‐snowbed gradient

Structure and diversity of ectomycorrhizal resistant propagules in Pinus montezumae neotropical forests and implications for seedling establishment

Contact Info

Product

Resources

About