Autor(es): de Moraes Cunha Gonçalves, Matheus ; de Almeida Lopes, Angela Celis ; Gomes, Regina Lucia Ferreira ; de Melo, Wanderley José [UNESP] ; Araujo, Ademir Sergio Ferreira ; Pinheiro, José Baldin ; Marin-Morales, Maria Aparecida [UNESP]
Data: 2020
Identificador Persistente: http://hdl.handle.net/11449/201894
Origem: Oasisbr
Assunto(s): Allium cepa; Chromosomic aberration; Composting; Genotoxicity; Lactuca sativa; Seed germination; Solid waste
Made available in DSpace on 2020-12-12T02:44:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-09-01
Tannery sludge (TS) contains high levels of organic matter and chemical elements, mainly chromium (Cr). This can increase its toxicity, rendering it unsuitable for application to soil. However, composting has been proposed as an alternative method for detoxifying TS before its addition to soil. Thus, the aim of this study was to evaluate the phytotoxic and cytogenotoxic potential of untreated (TS) and composted (CTS) tannery sludge in solid and solubilized samples. Seed germination and root growth bioassays were performed with Lactuca sativa, while chromosomal aberrations were assessed using the Allium cepa bioassay. In solid samples, the L. sativa bioassay showed that TS adversely affected germination and root growth, while CTS had a negative affect only on root growth. In solubilized samples, only TS showed significant adverse effects on seed germination and root growth. In both solid and solubilized samples, TS and CTS showed cytotoxic, genotoxic, and mutagenic effects on A. cepa. Thus, results demonstrated that the composting of TS does not result in its complete detoxification. For this reason, TS and CTS cannot be recommended for agricultural use, since they may increase the risk of environmental contamination and crop damage.
Programa de Pós-Graduacao em Genetica e Melhoramento Universidade Federal do Piaui
Departamento de Fitotecnia Universidade Federal do Piaui
Universidade Estadual Paulista Campus de Jaboticabal
Universidade Brasil
Departamento de Engenharia Agrícola e Solos Universidade Federal do Piaui
Department of Agricultural and Soil Engineering Federal University of Piauí
Departamento de Genética Escola Superior de Agricultura Luiz de Queiroz (ESALQ/USP)
Departamento de Biologia Instituto de Biociências Universidade Estadual Paulista (UNESP)
Universidade Estadual Paulista Campus de Jaboticabal
Departamento de Biologia Instituto de Biociências Universidade Estadual Paulista (UNESP)
