title: Cylindrospermopsin Biodegradation Abilities of Aeromonas sp. Isolated from Rusałka Lake.
abstract: The occurrence of the cyanobacterial toxin cylindrospermopsin (CYN) in freshwater reservoirs is a common phenomenon. However, the biodegradation of this toxin in environmental samples has been observed only occasionally. In this work the biodegradation ability of cylindrospermopsin was investigated based on isolates from lakes with previous cyanotoxin history. Bacterial strains were identified based on the 16S rDNA and rpoD gene comparison. CYN biodegradation was monitored using the HPLC method. The R6 strain identified as Aeromonas sp. was documented as being capable of CYN removal. This biodegradation was dependent on the pH and temperature. Additionally, the stimulation of the growth of the R6 strain in the presence of CYN was indicated. Our discovery supports the hypothesis that (in analogy to the well-known phenomenon of microcystin biodegradation) in lakes dominated by potential CYN-producing cyanobacteria, the processes of microbial utilization of this toxin may occur.
authors.affiliation: Department of Plant Physiology and Development, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30387 Krakow, Poland. dariusz.dziga@uj.edu.pl.
authors.forename: Dariusz
authors.initials: D
authors.lastname: Dziga
authors.affiliation: Department of Hydrobiology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland. kok@amu.edu.pl.
authors.forename: Mikolaj
authors.initials: M
authors.lastname: Kokocinski
authors.affiliation: Department of Plant Physiology and Development, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30387 Krakow, Poland. anna.maksylewicz@uj.edu.pl.
authors.forename: Anna
authors.initials: A
authors.lastname: Maksylewicz
authors.affiliation: Department of Plant Physiology and Development, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30387 Krakow, Poland. ula.czaja-prokop@uj.edu.pl.
authors.forename: Urszula
authors.initials: U
authors.lastname: Czaja-Prokop
authors.affiliation: Department of Molecular Virology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland. erytropoeta@gmail.com.
authors.forename: Jakub
authors.initials: J
authors.lastname: Barylski
mesh_terms: D000333:Aeromonas / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D000470:Alkaloids; D001427:Bacterial Toxins / Q000378:metabolism*; D001673:Biodegradation, Environmental; D000087522:Cyanobacteria Toxins; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D060106:Lakes; D011044:Poland; D013696:Temperature; D014498:Uracil / Q000031:analogs & derivatives* / Q000378:metabolism; D014871:Water Microbiology
chemical_list: D000470:Alkaloids; D001427:Bacterial Toxins; D000087522:Cyanobacteria Toxins; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; C089595:cylindrospermopsin; D014498:Uracil
keywords: Aeromonas sp.; Polish lakes; biodegradation; cylindrospermopsin