RT Journal Article
T1 Screening of cyanotoxin producing genes in Ecuadorian freshwater systems
A1 Ballesteros Redondo, María Isabel
A1 Cruz, Sara de la
A1 Rojas, Michelle
A1 Salazar, Génesis
A1 Martínez-Fresneda, Miguel
A1 Castillejo, Pablo
AB This study pursued the detection of cyr and mcy genes to assess the presence of cylindrospemopsin (CN) and microcystin (MC) potential producers in Ecuadorian water bodies.  Methods Environmental DNA (eDNA) was extracted from eight water bodies and one wastewater treatment plant (WWTP) from Ecuador. A nested PCR was designed to amplify mcyB, cyrE, and cyrJ genes in these environmental samples. PCR products were sequenced and blasted against GenBank database.  Results Potential CN producers were found in seven water bodies and the WWTP. cyrE amplification revealed three variants belonging to Raphidopsis and Aphanizmenon species and one for cyrJ with around 90% identity with Raphidiopsis and Oscillatoria species. Four water bodies presented the same variant for mcyB similar to Microcystis panniformis with 99% of identity.  Conclusions This study contributes new data on the presence of toxic cyanobacteria strains and provides new molecular tools to assess cyanotoxin hazards in Ecuadorian water bodies.
PB Associação Brasileira de Limnologia
SN 2179-975X
YR 2022
FD 2022
LK https://hdl.handle.net/20.500.14352/102964
UL https://hdl.handle.net/20.500.14352/102964
LA eng
NO Ballesteros, I. et al. Screening of cyanotoxin producing genes in Ecuadorian freshwater systems. Acta Limnologica Brasiliensia, 2022, vol. 34, e24.
DS Docta Complutense
RD 5 abr 2025