Temporal and functional pattern of secreted enzyme activities in an ectomycorrhizal community

COURTY, Pierre-Emmanuel; FRANC, Alain; GARBAYE, Jean

doi:10.1016/j.soilbio.2010.07.014

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COURTY, Pierre-Emmanuel
Interactions Arbres-Microorganismes [IAM]

FRANC, Alain
Biodiversité, Gènes & Communautés [BioGeCo]

GARBAYE, Jean
Botanical Institute

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Ce document a été publié dans

Soil Biology and Biochemistry. 2010, vol. 42, n° 11, p. 2022-2025

Elsevier

Résumé en anglais

The ectomycorrhizal community of an oak forest has been monitored monthly throughout fifteen months. Eight enzymatic activities secreted by the ectomycorrhizal root tips and involved in the mobilization of nutrients from soil organic matter have been measured using microplate assays, resulting in potential activity patterns of individual fungal species. Both the species structure of the community and the specific activity level of each individual species changed with the season and soil horizon. This versatility may be an adaptative response of the ectomycorrhizal fungal community to a highly variable environment. The results also suggest that some ectomycorrhizal fungi behave as occasional saprobes and contribute to the decomposition of soil organic matter and nutrient cycling together with true saprotrophic fungi.< Réduire

Mots clés

MICROPLATE ASSAYS

COMMUNAUTÉ ECTOMYCORHIZIENNE

Mots clés en anglais

ECTOMYCORRHIZAL FUNGAL COMMUNITY

ACTIVITY PROFILING

FUNCTIONAL DIVERSITY

SEASONAL TURNOVER

CHENE

CHAMPIGNON SAPROTROPHE

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