Mathematisch-Naturwissenschaftliche Fakultät

Institut für Biowissenschaften

Fachgebiet: Applied Ecology

Betreuer: Prof. Dr. Ulf Karsten

Dipl. Biol. Stefan Kacan
(e-mail: )

Investigation of Cyanobacterin production, a toxin from the cyanobacterium Scytonema hofmanni Ag. (UTEX 1581)– use-oriented and ecological considerations

The aim of the study was to investigate the biotechnical production of the cyanotoxin cyanobacterin by the cyanobacterium Scytonema hofmanni (UTEX 1581) under the influence of the following abiotic parameters: photon flux rate, pH, temperature, different nutrient concentrations nitrate and phosphate as well as of trace elements.

Based on these data, the ecology of Scytonema hofmanni as part of a cyanobacterial community in the Everglades (Florida, USA) was concluded.

A new rapid method was developed to quantify cyanobacterin in the biomass by photometric analysis of DMF-extracts within 24 h.

Cyanobacterin exhibited allelochemical effects and its biosynthesis again is influenced by allelopathy.

Cyanobacterin can be used as a natural herbizide and as a co-antifoulant.