Nanoscale Observations of Extracellular Polymeric Substances Deposition on Phyllosilicates by an Ectomycorrhizal Fungus

摘要: Microorganisms colonizing surfaces can exude a wide range of substances, generally called Extracellular Polymeric Substances (EPS). While EPS has often been visualized as thick mature strata embedding microbes, the initial phases production, its structure at micro- and nanoscale microbial wall areas involved in exudation are less known. In this work we use Atomic Force Microscopy to image produced by fungus Paxillus involutus on phyllosilicate surfaces. Hyphal tips initially deposit which assumes shape “halo” surrounding hyphae. The fusion adjacent halos is likely responsible for creation monolayers covering mineral It also proposed that specific region hyphae initiates formation channels fungi. results presented here permit first time propose model stages accumulation fungi filamentous microorganisms general.