| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000435982 |
| ISSN: | 0001-3765 |
| Authors: | Rodgher, Suzelei1 Contador, Thais M1 Rocha, Giseli S2 Espindola, Evaldo L.G2 |
| Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Instituto de Ciencia e Tecnologia, Sao Jose dos Campos, Sao Paulo. Brasil 2Universidade de Sao Paulo, Escola de Engenharia de Sao Carlos, Sao Carlos, Sao Paulo. Brasil |
| Year: | 2020 |
| Volumen: | 92 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | The aim of this study was to evaluate the effect of phosphorus (P) on the toxicity of zinc (Zn) for the alga Raphidocelis subcapitata. P was provided in three concentrations: 2.3 x 10-4 mol L-1, 2.3 x 10-6 mol L−1 and 1.0 x 10-6 mol L−1. Algal cells were acclimated to the specific P concentrations before the start of the experiment. The chemical equilibrium software MINEQL+ 4.61 was employed to calculate the Zn2+ concentration. After acclimated, the algal cells were inoculated into media containing different Zn concentrations (0.09 x 10-6 mol L-1 to 9.08 x 10-6 mol L-1). The study showed that besides the reduction in algal growth rates, phosphorus had an important influence on the toxicity of zinc for microalga. The inhibitory Zn2+ concentration values for R. subcapitata were 2.74 x 10-6 mol L-1, 0.58 x 10-6 mol L-1 and 0.24 x 10-6 mol L-1 for the microalgae acclimated at P concentrations of 2.3 x 10-4 mol L-1, 2.3 x 10-6 mol L-1 and 1.0 x 10-6 mol L-1, respectively. Ecotoxicological studies should consider the interaction between metal concentrations and varying P values to provide realistic data of what occurs in phytoplankton communities in environments |
| Disciplines: | Biología |
| Keyword: | Algas, Fisiología vegetal, Nutrición mineral, Zinc, Toxicidad, Densidad poblacional, Algas verdes, Raphidocelis subcapitata, Chlorophyta |
| Keyword: | Algae, Plant physiology, Mineral nutrition, Zinc, Toxicity, Population density, Green algae, Raphidocelis subcapitata, Chlorophyta |
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