Genotoxicity assessment in aquatic environment impacted by the presence of heavy metals

Barbosa, Jefferson Silva; Cabral, T.M.; Ferreira, Daniel; Agnez-Lima, Lucymara Fassarella; Medeiros, Sílvia Regina Batistuzzo de

doi:10.1016/j.ecoenv.2009.10.008

Cited by 127 publications

(66 citation statements)

References 56 publications

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“…Similar results were also observed by [27] and [28] when estimating the genotoxicity in pharmaceutical/hospital effluents samples and [29] when assessing water samples from a lake environmentally affected with heavy metals. Other works also observed the environmental impact of the presence of heavy metals in rivers, lakes and soil aqueous extracts [30][31][32][33][34].…”

Section: Allium Cepa Test 'In Focus'supporting

confidence: 75%

Bioassays with Plants in the Monitoring of Water Quality

Barbério¹

2013

Water Treatment

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Section: Allium Cepa Test 'In Focus'supporting

confidence: 75%

Bioassays with Plants in the Monitoring of Water Quality

Barbério¹

2013

Water Treatment

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“…It is used to water supply of the 60-80% population of the Northern zone (Raposo and Gurgel, 2003) belonging to the Rio Doce River Basin. Industries, agriculture and livestock activities are common near the lake, offering potential health risks to the population through water pollution (Raposo and Gurgel, 2003;Barbosa et al, 2010).…”

Section: Study Areamentioning

confidence: 99%

Diel dynamic of phytoplankton functional groups in a tropical water supply, Extremoz Lake, northeastern Brazil

Pinto

Becker

2014

Acta Limnol. Bras.

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Aim: This study analyzed -the diel and vertical dynamics of phytoplankton functional groups in a natural tropical lake (Extremoz Lake, northeast Brazil), to investigate and understand the driver factors of the community during a severe drought period. Methods: Sampling of the abiotic variables and phytoplankton was performed at intervals of 6 hours over 24 hours in vertical profiles, in dry and rainy seasons (according to the historical average). The phytoplankton species were grouped according to the functional groups' approach sensu Reynolds et al. (2002). Results: October/12 was considered as a dry period (18.4 mm), while March/13, due to the historical average, as a rainy season, due to the low rainfall during the study period (15.7 mm), it was called severe drought. The lake showed thermal and chemical destratification in both periods. Phytoplankton biomass was higher in the dry season and their vertical distribution was stratified in both periods. In both samplings there were less algal biomass during the night. Phytoplankton functional groups of mixed and shallow systems (S 1 , L 0 and K) were descriptors throughout the study period with higher biomass always registered in the group S 1 , represented by Planktolyngbya limnetica (Cyanobacteria) Conclusion: The lack of seasonality observed in this study, due to prolonged drought, may have influenced the pattern of homogeneous behavior in both samplings. This pattern strongly influenced the vertical distribution of phytoplankton in the two periods, with a constancy of dominance of functional descriptors groups.Keywords: shallow lake, vertical distribution, cyanobacteria, functional groups.Resumo: Objetivo: O nosso trabalho teve como objetivo avaliar a dinâmica nictemeral e vertical dos grupos funcionais fitoplanctônicos em uma lagoa natural tropical (Lagoa de Extremoz, nordeste do Brasil), para investigar e compreender os fatores direcionadores da comunidade em um período de seca severa. Métodos: As amostragens das variáveis abióticas e do fitoplâncton foram realizadas a intervalos de 6 horas ao longo de um ciclo de 24 horas em perfis verticais nas estações de seca e chuva. As espécies fitoplanctônicas foram agrupadas de acordo com a abordagem de grupos funcionais sensu Reynolds et al. (2002). Resultados: O mês de outubro/12 foi caracterizado como período seco (18,4 mm), enquanto que março/13, pela média histórica era caracterizado período chuvoso, devido a baixa precipitação no período de estudo (15,7 mm), foi denominado seca severa. A lagoa apresentou desestratificação térmica e química em ambos períodos. A biomassa do fitoplâncton foi maior na estação seca e a distribuição vertical da mesma foi estratificada em ambas os períodos. Em ambas as amostragens houve menor biomassa algal nos períodos noturnos. Grupos funcionais fitoplanctônicos típicos de ambientes rasos e misturados (S 1 , L 0 e K) foram descritores durante todo o período do estudo, com maior biomassa registrada sempre no grupo S 1 , representado pela Planktolyngbya limnetica (Cyanobac...

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“…This indicates, qualitatively, the presence of compounds with some degree of cytotoxicity, containing in effluents from industries situated in the upstream of El Biar River. The decline of mitotic index has been attributed to the effect of environmental chemicals including heavy metals on DNA/protein synthesis of the biological system (Barbosa et al, 2010;Hemachandra and Pathiratne, 2015). The cytotoxic effect may not be contributed by a single compound, but is more likely to reflect the cumulative effects of contaminants present in water.…”

Section: Mitotic Indexmentioning

confidence: 99%

Efficacy of Avena Sativa L. And Trifolium Alexandrinum L. Test System for Detecting the Genotoxic and Phytotoxic Potential of Water Pollution

Khelif¹

2016

Appl Ecol Env Res

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Abstract. The Reghaïa Lake (Algiers, Algeria) is contaminated by the untreated industrial effluents discharge of Reghaïa-Rouiba industrial park, via El Biar River. The present report is the first study which addresses the effects of industrial wastewaters rejected into the lake in light of genotoxic and phytotoxic effects, using Avena sativa L. and Trifolium alexandrinum L. test system. The wastewaters were collected seasonally at the mouth of El Biar River and analyzed using chemical analysis and biological assays, including the germination and root elongation inhibition test, mitotic index and micronucleus test. Results showed that samples collected during the summer season (SM) were high contaminated by heavy metals than that of the winter season (WN). Furthermore, the WN samples have relatively low phytotoxicity on A. sativa seed germination and T. alexandrinum root elongation (no EC50 was determined). Genotoxicity of the SM samples is evident in A. sativa by a significant depression of mitotic activity, induction of several chromosomal aberrations and occurrence of micronuclei in T. alexandrinum. All the results indicated that the samples from the El Biar discharging river in Reghaïa Lake exhibited genotoxicity and argue for the possible use of A. sativa and T. alexandrinum plant system for genotoxicity assays.

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Genotoxicity assessment in aquatic environment impacted by the presence of heavy metals

Cited by 127 publications

References 56 publications

Bioassays with Plants in the Monitoring of Water Quality

Bioassays with Plants in the Monitoring of Water Quality

Diel dynamic of phytoplankton functional groups in a tropical water supply, Extremoz Lake, northeastern Brazil

Efficacy of Avena Sativa L. And Trifolium Alexandrinum L. Test System for Detecting the Genotoxic and Phytotoxic Potential of Water Pollution

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