title: Investigation of toxin content in Cylindrospermopsis raciborski (Wołoszyńska) Seenaya and Subba Raju and Aphanizomenon ovalisporum (Forti) strains isolated from shallow lakes of Hungary.
abstract: Cylindrospermopsin (CYN) is an alkaloid type cytotoxic metabolite produced by several cyanobacterial species, which caused human illnesses. The occurrence of CYN has been mostly associated with tropical and subtropical cyanobacteria, but recently it is appearing in several countries, all over the world. We analyzed CYN concentration and polyketide synthase/peptide synthetase (PKS /PS) genes, important parts of the gene cluster responsible for the CYN biosynthesis, in 14 isolated/collected Cylindrospermopsis raciborskii and Aphanizomenon ovalisporum strains originated mostly from Hungary. CYN and PKS /PS genes were detected in Aphanizomenon ovalisporum strains isolated from Spain (of our isolation) and isolated in Israel (IL C-164), but the Hungarian isolate from the hyposaline Lake Szelidi had a lack of production capacity. In the Hungarian samples of C. raciborskii, we found no CYN and PKS /PS genes content comparing to CYN producer C. raciborskii AQS originated from Australia.
authors.affiliation: Department of Botany, University of Debrecen, Egyetem tér 1 H-4010 Debrecen, Hungary. vasasg@tigris.unideb.hu
authors.forename: G
authors.initials: G
authors.lastname: Vasas
authors.forename: Gy
authors.initials: G
authors.lastname: Surányi
authors.forename: Cs
authors.initials: C
authors.lastname: Máthé
authors.forename: Márta
authors.initials: M
authors.lastname: M-Hamvas
authors.forename: G
authors.initials: G
authors.lastname: Borbély
mesh_terms: D000470:Alkaloids / Q000096:biosynthesis*; D046890:Aphanizomenon / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D001427:Bacterial Toxins; D000087522:Cyanobacteria Toxins; D046891:Cylindrospermopsis / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D005618:Fresh Water / Q000382:microbiology; D005784:Gene Amplification; D005798:Genes, Bacterial; D006814:Hungary; D010933:Plankton / Q000382:microbiology; D014498:Uracil / Q000031:analogs & derivatives* / Q000032:analysis / Q000378:metabolism
chemical_list: D000470:Alkaloids; D001427:Bacterial Toxins; D000087522:Cyanobacteria Toxins; C089595:cylindrospermopsin; D014498:Uracil