First Report of Cylindrospermopsin Production by Two Cyanobacteria (Dolichospermum mendotae and Chrysosporum ovalisporum) in Lake Iznik, Turkey

Akcaalan R., Koker L., Oguz A., Spoof L., Meriluoto J., Albay M.

TOXINS, vol.6, no.11, pp.3173-3186, 2014 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 6 Issue: 11
  • Publication Date: 2014
  • Doi Number: 10.3390/toxins6113173
  • Journal Name: TOXINS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3173-3186
  • Keywords: LC-MS/MS, cyanobacteria, Lake Iznik, cylindrospermopsin, Turkey, FRESH-WATER, ANABAENA CYANOBACTERIA, APHANIZOMENON, CYANOTOXIN, PHYTOPLANKTON, RACIBORSKII, BLOOMS, GENES, FORTI, STATE
  • Istanbul University Affiliated: Yes

Abstract

Cylindrospermopsin (CYN) is a cytotoxic alkaloid produced by cyanobacteria. The distribution of this toxin is expanding around the world and the number of cyanobacteria species producing this toxin is also increasing. CYN was detected for the first time in Turkey during the summer months of 2013. The responsible species were identified as Dolichospermum (Anabaena) mendotae and Chrysosporum (Aphanizomenon) ovalisporum. The D. mendotae increased in May, however, C. ovalisporum formed a prolonged bloom in August. CYN concentrations were measured by LC-MS/MS and ranged from 0.12 mu g.mg(-1) to 4.92 mu g.mg(-1) as dry weight, respectively. Both species were the only cyanobacteria actively growing and CYN production was attributed solely to these species. Despite CYN production by C. ovalisporum being a well-known phenomenon, to our knowledge, this is the first report of CYN found in D. mendotae bloom.