Toxicity and genotoxicity of water and sediment from streams on dotted duckweed (Landoltia punctata)

Factori, R; Leles, S M; Novakowski, Gisele Caroline; Rocha, Cátia; Thomaz, Sidinei Magela

doi:10.1590/1519-6984.01013

Cited by 6 publications

(1 citation statement)

References 26 publications

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“…They are classified as genotoxic. Genotoxic effects of heavy metals are very important as organisms health is based on genome (Factori et al 2014;Marple and Hasty 2004). A result of genetic damage material of an organism can thus show up for a long time, sometimes in the next generation (Guecheva et al 2001;Huang and Wai 2004;Malachová et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Investigation of genotoxicity in river sediments

Sestinova¹,

Findoráková²,

Hančuľák³

et al. 2017

Nova Biotechnologica Et Chimica

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The purpose of the present study was to develop a useful screening method to assess genotoxic effect of polluted bottom sediments from the water reservoir Ružin No.I. The Hornád and Hnilec Rivers drained a former mining area, have been polluted in the long-term by heavy metals (Cu, As, Sb, Hg), which significantly contributed to environmental degradation. Genotoxicity of bottom sediment was evaluated by test SOS-ChromoPadTM 3.0 for solid samples without extraction. The mentioned test represents simple, quick and direct sediment phase toxicity testing procedure. In this test bacterial strain Escherichia coli K12 PQ37 was used. The results of SOSChromoPadTM 3.0 showed that sample Hornád has low potential genotoxic effect on the environment. It was determined on the basis of slight blue colouration of chromogenic paper at the point of sediment application. The sample Hnilec was negative. This test allows significantly reduce the time for obtaining information about sediments genotoxicity and accept necessary security proceeding in time.

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Section: Introductionmentioning

confidence: 99%

Investigation of genotoxicity in river sediments

Sestinova¹,

Findoráková²,

Hančuľák³

et al. 2017

Nova Biotechnologica Et Chimica

View full text Add to dashboard Cite

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The use of biomarkers to assess the health of aquatic ecosystems in Brazil: a review

et al. 2016

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Organisms in polluted environments are typically exposed to a complex mixture of chemical contaminants. The great concern about the health of aquatic ecosystems has led to the increased use of biomarkers over the past years. The aim of this work was to review the papers published from 2000 to 2015, which used biomarkers to assess the health of aquatic ecosystems in Brazil. A research resulted in 99 eligible papers. More than 80% of studies were conducted in the states of São Paulo and Rio Grande do Sul. Approximately 63% of studies used fish as bioindicator, whereas the micronucleus test and biochemical analyses were the most used biomarkers. A multibiomarker approach was used by 60.6% of studies, while 39.4% used one single biomarker. Furthermore, 68% were field studies and more than 75% of these used control animals sampled at reference sites. A relationship between the biomarker responses and pollution was reported by 87% of studies; however, 43.4% of studies analyzed only one sampling period, limiting comparisons and comprehension about possible seasonal variations. This review evidenced some weak points in studies using biomarkers in Brazil, especially related to the lack of studies in two important biomes (the Pantanal and the Amazon Rainforest) and experimental designs (small sample size, sampling in one single period, use of one single biomarker). Thus, future studies should consider mainly the use of multiple biomarkers, greater sample size, seasonal sampling and water physicochemical parameters to better diagnose the health of aquatic ecosystems.

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