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Review on fire effects on ectomycorrhizal symbiosis, an unachieved work for a scalding topic

Abstract : Millions of hectares of ectomycorrhizal (ECM) forests provide most of the wood resource in the northern hemisphere. Among these forests, those that are fire-prone concentrate an astonishing diversity of mutu- alistic soil fungi that are pivotal for seedling establishment, tree growth and forest functioning and dynamics. Here, we review the effects of fire on ECM symbiosis in these forests using a systematic screen- ing of the literature. We reveal that a low number of field studies (73) directly address fire effect on ECM symbiosis, in a restricted geographic area that partially represents the geography of ECM biodiversity stakes and fire risk. The analyzed literature consensually reports long-term shifts in the composition of ECM fungal communities after fire. Contrastingly, the effects of fire on fungal diversity and richness at the local scale continue to be debated among researchers, and need to be documented further using ade- quate experimental device to limit the effects of some identified methodological biases. Furthermore, our analysis emphasizes the urgent need to carefully consider the belowground effects of prescribed burning. This is an important conclusion because this widely implemented and efficient management tool to pre- vent wildfires may impact ECM soil communities in the same way as uncontrolled events. Our analysis finally highlights the need of refining the concept of post-fire ECM fungi, by taking advantage of promis- ing tools, such as next-generation sequencing and quantitative PCR applied to mycelia and spores, to inte- grate the vegetative traits of fungi in integrative definitions.
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Contributor : Nathalie Lyvet Connect in order to contact the contributor
Submitted on : Thursday, March 9, 2017 - 3:28:32 PM
Last modification on : Tuesday, July 5, 2022 - 10:21:57 AM



Adrien Taudière, Richard Franck, Christopher Carcaillet. Review on fire effects on ectomycorrhizal symbiosis, an unachieved work for a scalding topic. Forest Ecology and Management, Elsevier, 2017, 391, pp.446-457. ⟨10.1016/j.foreco.2017.02.043⟩. ⟨hal-01485947⟩



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