Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of phosphorus on the toxicity of zinc to the microalga Raphidocelis subcapitata

Full text
Author(s):
Rodgher, Suzelei [1] ; Contador, Thais M. [1] ; Rocha, Giseli S. [2] ; Espindola, Evaldo L. G. [2]
Total Authors: 4
Affiliation:
[1] Univ Estadual Paulista UNESP, Inst Ciencia & Tecnol UNESP SJC, Dept Engn Ambiental, Parque Tecnol Sao Jose dos Campos, BR-12247016 Sao Jose Dos Campos, SP - Brazil
[2] Univ Sao Paulo, Escola Engn Sao Carlos, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Anais da Academia Brasileira de Ciências; v. 92, n. 2 2020.
Web of Science Citations: 0
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. (AU)

FAPESP's process: 15/19415-1 - Analyze of phosphorus effect on zinc toxicity to microalgae Raphidocelis subcapitata
Grantee:Thais Miike Contador
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 16/22620-9 - Toxicity of algal cells exposed to the phosphorus and zinc to the cladoceran Ceriodaphnia silvestrii
Grantee:Fernanda Campos de Paulo
Support type: Scholarships in Brazil - Scientific Initiation