| Texto completo | |
| Autor(es): |
Kadiri, Medina O.
;
Isagba, Solomon
;
Ogbebor, Jeffrey U.
;
Omoruyi, Osasere A.
;
Unusiotame-Owolagba, Timothy E.
;
Lorenzi, Adriana Sturion
;
Bittencourt-Oliveira, Maria do Carmo
;
Chia, Mathias Ahii
Número total de Autores: 8
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Environmental Science and Pollution Research; v. 27, n. 28, p. 10-pg., 2020-06-26. |
| Resumo | |
Microcystins (MCs) are the most studied toxins of cyanobacteria in freshwater bodies worldwide. However, they are poorly documented in coastal waters in several parts of the world. In this study, we investigated the composition of cyanobacteria and the presence of microcystins (MCs) in several coastal aquatic ecosystems of Nigeria. Direct morphological analysis revealed that members of the genusOscillatoriawere dominant with five species, followed byTrichodesmiumwith two species in Nigerian coastal waters. Oso Ibanilo had the highest cyanobacterial biomass (998 x 10(3)cells/L), followed by Rivers Ocean (156 x 10(3)cells/L). Except for the Cross River Ocean, cyanobacteria were present in all the investigated aquatic ecosystems. Ten (10) out of twenty water bodies examined had detectable levels of MCs. Furthermore, genomic DNA analysis for themcyE gene of microcystin synthetase (mcy) cluster showed identities higher than 86% (query coverage > 96%) with toxic strains of cyanobacteria in all the samples analyzed. Also, the sequences of samples matched those of uncultured cyanobacteria from recreational lakes in Southern Germany. Our findings indicate that the presence of toxic cyanobacteria in coastal waters of Nigeria is of public and environmental health concern. (AU) | |
| Processo FAPESP: | 13/15296-2 - Metagenômica comparativa de florações de cianobactérias em reservatórios de água do estado de Pernambuco |
| Beneficiário: | Adriana Sturion Lorenzi |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |
| Processo FAPESP: | 13/11306-3 - Efeitos de anatoxina-a e cilindrospermopsina em diferentes concentrações de nitrogênio e irradiância na fisiologia de Microcystis aeruginosa (Cyanobacteria)e Scenedesmus acuminatus (Chlorophyta) |
| Beneficiário: | Mathias Ahii Chia |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 14/01913-2 - Metagenômica comparativa de florações de cianobactérias em reservatórios de água do Estado de Pernambuco. |
| Beneficiário: | Adriana Sturion Lorenzi |
| Modalidade de apoio: | Bolsas no Brasil - Jovens Pesquisadores |
| Processo FAPESP: | 14/26898-6 - Revelando alguns processos fisiológicos e moleculares envolvidos nas interações alelopáticas entre fitoplâncton tóxico e não-tóxicos |
| Beneficiário: | Mathias Ahii Chia |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado |