Vertical distribution of ectomycorrhizal fungal taxa in a podzol soil profile

Rosling, Anna; Landeweert, R.; Lindahl, Björn D.; Larsson, Karl‐Henrik; Kuyper, Thomas W.; Taylor, Andy F. S.; Finlay, Roger D.

doi:10.1046/j.1469-8137.2003.00829.x

Cited by 316 publications

(236 citation statements)

References 36 publications

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“…Piceirhiza bicolorata -like EcM formed by Meliniomyces bicolor are frequently misidentified with Cenococcum geophilum EcM confirming Vrålstad et al’s (2002) findings. In the case of the genus Cortinarius with “white” EcM (and considering that this genus is diverse in the study stand), we performed “identification probes” sensu Agerer (1991) tracing sporome-EcM, revealing that different taxa of Cortinarius frequently shared morpho-anatomical attributes which is in line with Rosling et al’s (2003) findings. As a result, in the current study no further identification attempts were made from “blind probes” sensu Agerer (1991), grouping similar white EcM types in the taxon Cortinarius spp.…”

Section: Discussionsupporting

confidence: 80%

Testing sampling effort and relative abundance descriptors of belowground ectomycorrhizal fungi in a UK planted scots pine woodland

Villarreal-Ruiz

Neri-Luna

2017

Mycology

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The native Caledonian pinewoods of Scotland, UK contain a unique and unexplored biodiversity of below-ground ectomycorrhizal fungi which may constitute a valuable source of microbial genetics resources for woodland restoration. In this study we test the sampling effort, taxa detection (ectomycorrhiza morpho-anatotyping) and relative abundance measurements (ectomycorrhizal root tip number vs. dry weight) of below-ground ectomycorrhizal fungal communities in a planted Pinus sylvestris Caledonian woodland. A total of 18 replicated sampling points were set up at differential distance along a 125 m transect, in a 50-yr-old, stem exclusion: thicket phase, Pinus sylvestris pinewood stand. A total of 11 ectomycorrhizal morpho-anatotypes were detected from 6689 ectomycorrhizal root tips counted and weighing 992.6 mg dry weight. The major ectomycorrhizal taxa were Meliniomyces bicolor and Cortinarius spp. accounting ~50% of total pine roots. A highly significant relationship (r2 = 0.16, p < 0.000) was found between Sørensen dissimilarity in soil cores and distance apart. In this study, the spatial arrangement of samples indicated that over short distances the dissimilarity was lower in contrast with the longer distances along the transect.

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Section: Discussionsupporting

confidence: 80%

Testing sampling effort and relative abundance descriptors of belowground ectomycorrhizal fungi in a UK planted scots pine woodland

Villarreal-Ruiz

Neri-Luna

2017

Mycology

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“…Vertical niche differentiation of EcM root tips across soil horizons for a Swedish podzol was demonstated by Rosling et al (2003). Two thirds of the root tips were found in the mineral soil horizons.…”

Section: Weathering By Rock-eating Ecm Fungi -A Further Element Of Ecmentioning

confidence: 97%

Rock-eating mycorrhizas: their role in plant nutrition and biogeochemical cycles

et al. 2007

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A decade ago, tunnels inside mineral grains were found that were likely formed by hyphae of ectomycorrhizal (EcM) fungi. This observation implied that EcM fungi can dissolve mineral grains. The observation raised several questions on the ecology of these "rock-eating" fungi. This review addresses the roles of these rock-eating EcM associations in plant nutrition, biogeochemical cycles and pedogenesis. Research approaches ranged from molecular to ecosystem level scales. Nutrient deficiencies change EcM seedling exudation patterns of organic anions and thus their potential to mobilise base cations from minerals. This response was fungal species-specific. Some EcM fungi accelerated mineral weathering. While mineral weathering could also increase the concentrations of phytotoxic aluminium in the soil solution, some EcM fungi increase Al tolerance through an enhanced exudation of oxalate. Through their contribution to Al transport, EcM hyphae could be agents in pedogenesis, especially podzolisation. A modelling study indicated that mineral tunnelling is less important than surface weathering by EcM fungi. With both processes taken together, the contribution of EcM fungi to weathering may be significant. In the field vertical niche differentiation of EcM fungi was shown for EcM root tips and extraradical mycelium. In the field EcM fungi and tunnel densities were correlated. Our results support a role of rock-eating EcM fungi in plant nutrition and biogeochemical cycles. EcM fungal species-specific differences indicate the need for further research with regard to this variation in functional traits.

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“…EM fungi inhabit distinct vertical niches in soil, a likely consequence of resource niche partitioning (Dickie et al, 2002;Rosling et al, 2003). It is thought that EM fungi positioned higher in the profile rely more on recent aboveground litters containing more labile compounds, while EM fungi found deeper in the soil profile specialize on breaking down more recalcitrant compounds (Lindahl et al, 2007;Talbot et al, 2013).…”

Section: Physical and Spatial Protectionmentioning

confidence: 99%

The decomposition of ectomycorrhizal fungal necromass

Fernandez¹,

Langley

Chapman

et al. 2016

Soil Biology and Biochemistry

181

109

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a b s t r a c tThe turnover of ectomycorrhizal (EM) fungal biomass represents a significant input into forest carbon (C) and nutrient cycles. Given the size of these fluxes, understanding the factors that control the decomposition of this necromass will greatly improve understanding of C and nutrient cycling in ecosystems. Recent research has highlighted the considerable variation in the decomposition rates of EM fungal necromass, and patterns from this research are beginning to emerge. In this article we review the research that has examined both intrinsic and extrinsic factors that control the decomposition of EM fungal necromass and propose additional factors that may strongly influence EM fungal necromass decomposition and ecosystem properties. We argue that, as with most plant litters, the stoichiometry (C:N) of EM necromass is an important factor governing decomposition, but its role is modulated by the nature of the C and N in the tissue. In particular, melanin concentration appears to negatively influence the quality of EM fungal necromass much as lignin does in plant litters. Other intrinsic factors such as the morphology of the mycelium may also play a large role and suggest this as a focus for future research. Extrinsic factors, such as decomposer community activity and physical protection by soil, are also likely to be important in governing the decomposition of ectomycorrhizal necromass in situ. Finally, we highlight the potential importance of EM fungal necromass diversity and abundance in influencing terrestrial biogeochemical cycles. Understanding the factors that control the decomposition of EM necromass will then improve the predictive power of next-generation terrestrial biosphere models.

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Vertical distribution of ectomycorrhizal fungal taxa in a podzol soil profile

Cited by 316 publications

References 36 publications

Testing sampling effort and relative abundance descriptors of belowground ectomycorrhizal fungi in a UK planted scots pine woodland

Testing sampling effort and relative abundance descriptors of belowground ectomycorrhizal fungi in a UK planted scots pine woodland

Rock-eating mycorrhizas: their role in plant nutrition and biogeochemical cycles

The decomposition of ectomycorrhizal fungal necromass

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