Elektronenoptischer Nachweis von sauren Mucopolysacchariden bei Pilzhyphen

Abstract

An electron microscopic investigation of wood fungi revealed that the hyphae secrete mucous substances which form a uniform surface cover and which are dispersed as particles or occur as fibrillar elements. The mucous layer collected from Aureobasidium pullulans is a polysaccharide (a glucan). On thin layers of the fungus hyphae the extracellular materila reveals a flaky partly fibrillar structure interspersed with more or less coarse particles. This substance became visible following a Thorotrast (thorium dioxide) treatment also on hyphae of Daedalea quercina and of Paecilomyces sp. and Scopularia phycomyces.