OPENAIRE OpenAire Bielefeld Academic Search Engine (BASE) Recolector de Ciencia Abierta, RECOLECTA MPG.PuRe DOAJ Crossref Microsoft Academic Graph Europe PubMed Central u:cris Permanent Hosting, Archiving and Indexing of Digital Resources and Assets Dipòsit Digital de Documents de la UAB HAL INRAE UnpayWall Institutional Repository Universiteit Antwerpen SPIRE - Sciences Po Institutional REpository Agritrop PubMed Central Frontiers in Plant Science Open Access 2021-07-21 2022-01-07 <p>Ectomycorrhizal (EcM) and saprotrophic fungi interact in the breakdown of organic matter, but the mechanisms underlying the EcM role on organic matter decomposition are not totally clear. We hypothesized that the ecological relations between EcM and saprotroph fungi are modulated by resources availability and accessibility, determining decomposition rates. We manipulated the amount of leaf litter inputs (No-Litter, Control Litter, Doubled Litter) on Trenched (root exclusion) and Non-Trenched plots (with roots) in a temperate deciduous forest of EcM-associated trees. Resultant shifts in soil fungal communities were determined by phospholipid fatty acids and DNA sequencing after 3 years, and CO2 fluxes were measured throughout this period. Different levels of leaf litter inputs generated a gradient of organic substrate availability and accessibility, altering the composition and ecological relations between EcM and saprotroph fungal communities. EcM fungi dominated at low levels of fresh organic substrates and lower organic matter quality, where short-distances exploration types seem to be better competitors, whereas saprotrophs and longer exploration types of EcM fungi tended to dominate at high levels of leaf litter inputs, where labile organic substrates were easily accessible. We were, however, not able to detect unequivocal signs of competition between these fungal groups for common resources. These results point to the relevance of substrate quality and availability as key factors determining the role of EcM and saprotroph fungi on litter and soil organic matter decay and represent a path forward on the capacity of organic matter decomposition of different exploration types of EcM fungi.</p litière végétale Plant detritus 0301 basic medicine 570 Quercus petraea http://aims.fao.org/aos/agrovoc/c_24064 Champignon http://aims.fao.org/aos/agrovoc/c_14083 litter decomposition Plant Science 630 SB1-1110 03 medical and health sciences Saprophyte http://aims.fao.org/aos/agrovoc/c_33550 environment/Symbiosis [SDV.EE.ECO] Life Sciences [q-bio]/Ecology, environment/Ecosystems plant detritus 106026 Ecosystem research http://aims.fao.org/aos/agrovoc/c_3047 Biology http://aims.fao.org/aos/agrovoc/c_3145 http://aims.fao.org/aos/agrovoc/c_5023 http://aims.fao.org/aos/agrovoc/c_35657 http://aims.fao.org/aos/agrovoc/c_5387 soil fungal communities Mycorhizé 0303 health sciences litière forestière Ectomycorrhiza fungal exploration types ectomycorrhiza fungal exploration types http://aims.fao.org/aos/agrovoc/c_24692 Litter decomposition Plant culture Soil fungal communities [SDV.EE.IEO] Life Sciences [q-bio]/Ecology, environment/Symbiosis 15. Life on land Gadgil effect http://aims.fao.org/aos/agrovoc/c_35482 CO2 fluxes ectomycorhize 106026 Ökosystemforschung matière organique CO fluxes [SDV.EE.ECO]Life Sciences [q-bio]/Ecology [SDV.EE.IEO]Life Sciences [q-bio]/Ecology champignon du sol environment/Ecosystems matière organique du sol Sara Marañón-Jiménez, Sara Marañón-Jiménez, Dajana Radujković, Erik Verbruggen, Oriol Grau, Oriol Grau, Oriol Grau, Matthias Cuntz, Josep Peñuelas, Josep Peñuelas, Andreas Richter, Marion Schrumpf, Corinna Rebmann, 2021-07-21 journalpaper <p>Ectomycorrhizal (EcM) and saprotrophic fungi interact in the breakdown of organic matter, but the mechanisms underlying the EcM role on organic matter decomposition are not totally clear. We hypothesized that the ecological relations between EcM and saprotroph fungi are modulated by resources availability and accessibility, determining decomposition rates. We manipulated the amount of leaf litter inputs (No-Litter, Control Litter, Doubled Litter) on Trenched (root exclusion) and Non-Trenched plots (with roots) in a temperate deciduous forest of EcM-associated trees. Resultant shifts in soil fungal communities were determined by phospholipid fatty acids and DNA sequencing after 3 years, and CO2 fluxes were measured throughout this period. Different levels of leaf litter inputs generated a gradient of organic substrate availability and accessibility, altering the composition and ecological relations between EcM and saprotroph fungal communities. EcM fungi dominated at low levels of fresh organic substrates and lower organic matter quality, where short-distances exploration types seem to be better competitors, whereas saprotrophs and longer exploration types of EcM fungi tended to dominate at high levels of leaf litter inputs, where labile organic substrates were easily accessible. We were, however, not able to detect unequivocal signs of competition between these fungal groups for common resources. These results point to the relevance of substrate quality and availability as key factors determining the role of EcM and saprotroph fungi on litter and soil organic matter decay and represent a path forward on the capacity of organic matter decomposition of different exploration types of EcM fungi.</p Shifts in the Abundances of Saprotrophic and Ectomycorrhizal Fungi With Altered Leaf Litter Inputs 10067/1804720151162165141 https://doi.org/10067/1804720151162165141 750252