| Autor: |
da Silva RMG; School of Sciences, Humanities and Languages, Department of Biotechnology, Laboratory of Phytotherapic and Natural Products, São Paulo State University (UNESP), Assis, São Paulo, Brazil.; Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil., de Oliveira Moraes VM; School of Sciences, Humanities and Languages, Department of Biotechnology, Laboratory of Phytotherapic and Natural Products, São Paulo State University (UNESP), Assis, São Paulo, Brazil., Granero FO; Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil., Malaguti Figueiredo CC; Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil., Dos Santos VHM; Sapucai Valley University (UNIVÁS), Pouso Alegre, Minas Gerais, Brazil., Machado LP; Faculty of Agricultural Sciences of Vale do Ribeira, Department of Fisheries Engineering, São Paulo State University (UNESP), Registro, São Paulo, Brazil., Pereira Silva L; Fundação Educacional do Município de Assis (FEMA), São Paulo, Brazil. |
| Abstrakt: |
Heavy metals (HMs) are natural components of the Earth's crust that might originate from natural and anthropogenic sources. In excess quantities, the presence of these metals is harmful for both environment and human health. Taking this into account, various investigators examined bioaccumulator species in order to reduce environmental toxicity, among these Baccharis trimera . Therefore, the present study aimed to determine the capacity of B. trimera to bioaccumulate HMs and assess consequent cytogenotoxicity following exposure. B. trimera vegetative parts were collected from two groups (1) control, in which plants were cultivated in soil exposed to distilled water, and (2) exposed, in which plants were cultivated in soil exposed to HMs including manganese (Mn), iron (Fe), lead (Pb), copper (Cu), cobalt (Co), zinc (Zn), and chromium (Cr). HMs were quantified in cultivation soil and extracts (aqueous and ethanolic) as well as infusion of B. trimera vegetative parts. Root lengths and cytogenotoxic effects were determined using Allium cepa test. Results demonstrated that all HMs studied were absorbed and bioaccumulated by B. trimera . Root lengths were decreased when exposed to ethanolic extract of B. trimera cultivated in soil exposed to HMs solution, which was the extract that exhibited the highest cytogenotoxicity values. Thus, data demonstrated that B. trimera might serve as a bioaccumulator for the reduction of environmental toxicity associated with the presence of certain HMs. |
