| We discovered that the municipal drinking water network, using groundwater, is consistently infested with slow-growing black fungi. The significance of these oligotrophic organisms, which may also play a role in the bottling industry of mineral water, will be investigated using AFLP, MLST, microsatellites and sequencing IGS and HSP. The occurrence of fungal biofilms deep in the network is remarkable and suggests contamination from groundwater currents. The presence of similar fungi in the bottom of deep, cold lakes will be verified. Population genetic studies will be undertaken in order to reveal the occurrence of meiotic recombination in one of the main species. |