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      Soil microclimate changes affect soil fungal communities in a Mediterranean pine forest

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          Exploration types of ectomycorrhizae

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            Carbon sequestration is related to mycorrhizal fungal community shifts during long-term succession in boreal forests.

            Boreal forest soils store a major proportion of the global terrestrial carbon (C) and below-ground inputs contribute as much as above-ground plant litter to the total C stored in the soil. A better understanding of the dynamics and drivers of root-associated fungal communities is essential to predict long-term soil C storage and climate feedbacks in northern ecosystems. We used 454-pyrosequencing to identify fungal communities across fine-scaled soil profiles in a 5000 yr fire-driven boreal forest chronosequence, with the aim of pinpointing shifts in fungal community composition that may underlie variation in below-ground C sequestration. In early successional-stage forests, higher abundance of cord-forming ectomycorrhizal fungi (such as Cortinarius and Suillus species) was linked to rapid turnover of mycelial biomass and necromass, efficient nitrogen (N) mobilization and low C sequestration. In late successional-stage forests, cord formers declined, while ericoid mycorrhizal ascomycetes continued to dominate, potentially facilitating long-term humus build-up through production of melanized hyphae that resist decomposition. Our results suggest that cord-forming ectomycorrhizal fungi and ericoid mycorrhizal fungi play opposing roles in below-ground C storage. We postulate that, by affecting turnover and decomposition of fungal tissues, mycorrhizal fungal identity and growth form are critical determinants of C and N sequestration in boreal forests.
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              Mycorrhizal Fungi: Highways for Water and Nutrients in Arid Soils

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                Author and article information

                Journal
                New Phytologist
                New Phytol
                Wiley
                0028646X
                December 2018
                December 2018
                May 14 2018
                : 220
                : 4
                : 1211-1221
                Affiliations
                [1 ]Forest Bioengineering Solutions S.A.; Crta. de Sant Llorenç de Morunys Km. 2 E-25280 Solsona Spain
                [2 ]Departament de Producció Vegetal i Ciència Forestal; Universitat de Lleida-AGROTECNIO; Av. Rovira Roure, 191 E-25198 Lleida Spain
                [3 ]Department of Soil and Environment; Swedish University of Agricultural Sciences; SE-75007 Uppsala Sweden
                [4 ]Department of Forest Mycology and Plant Pathology; Swedish University of Agricultural Sciences; SE-75007 Uppsala Sweden
                [5 ]Centre Tecnològic Forestal de Catalunya; CTFC-CEMFOR; Ctra. de St. Llorenç de Morunys km 2 E-25280 Solsona Spain
                [6 ]Centre de Cabrils; IRTA; Ctra. Cabrils Km. 2 E-08348 Cabrils, Barcelona Spain
                Article
                10.1111/nph.15205
                29757469
                c2f2192e-f6ce-422d-8b8d-2ea2b089267e
                © 2018

                http://doi.wiley.com/10.1002/tdm_license_1.1

                http://onlinelibrary.wiley.com/termsAndConditions#vor

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