Study of Extracellular functional system in soil fungi: fungal enzymes as exposure biomarkers to metals

Jérémie D. Lebrun (1) , Nathalie Demont-Caulet (2) , Isabelle Gattin (3) , Karine Laval (3) , Christian Mougin (1)

1 PESSAC - Physicochimie et Ecotoxicologie des SolS d'Agrosystèmes Contaminés
2 IJPB - Institut Jean-Pierre Bourgin
3 BioSol - Laboratoire d’écologie microbienne

The release of metals into soil has led to their important accumulation in biota and often alters biological systems. By their ability to secrete enzymes and adapt their metabolism to various sources of nutriment, fungi are key colonizers in terrestrial ecosystems. They play a major role in the biogeochemical cycles and soil functioning. Since fungi represent one of the largest biomass in soils, the response of their extracellular functional systems to metals offers promising perspectives for ecotoxicological assessment. However, the functional diversity of fungi and the metal effect on their functional systems are not well known, limiting the predictive interest of such fungal biomarkers.

Domaines: Sciences du Vivant [q-bio]

Jérémie D. Lebrun, Nathalie Demont-Caulet, Isabelle Gattin, Karine Laval, Christian Mougin. Study of Extracellular functional system in soil fungi: fungal enzymes as exposure biomarkers to metals. Rencontre des doctorants du département SPE, Sep 2009, Rennes, France. 2009. ⟨hal-01203993⟩