ArticleEnvironmental science and pollution research international2015
Genotoxicity evaluation of environmental pollutants using analysis of nucleolar alterations.
Article in Environmental science and pollution research international, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Efficiency of rice husk ash to adsorb chromium(VI) using the Allium cepa toxicity test.Environmental science and pollution research international · 2019Article
- X-ray fluorescence spectrometry characteristics of oily waste water from steel processing and an evaluation of its impact on the environment.Environmental science and pollution research international · 2018Article
- Hydropower reservoirs: cytotoxic and genotoxic assessment using the Allium cepa root model.Environmental science and pollution research international · 2017Article
- Genotoxicity of titanium dioxide nanoparticles and triggering of defense mechanisms in Allium cepa.Genetics and molecular biologyArticle
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Nucleolar alterations resulting from the action of either chemical or physical agents can serve as important genotoxicity biomarkers. In this study, the efficiency of AgNOR banding technique to identify the presence of nucleoli in micronucleus and assess nucleolar alterations in aberrant cells of Allium cepa was evaluated. Seeds of this plant were exposed to both water samples from a river that receives untreated urban effluent and to the trifluralin herbicide (0.84 mg/L concentration), both analyzed in two different seasons (summer and winter seasons). Samples induced significant frequencies of chromosomal and nuclear aberrations and micronuclei, as observed in cells submitted to conventional chromosomal staining. The herbicide caused a significant increase in the number of nucleoli and micronuclei, interpreted as due to the elimination of excessive nucleolar material resulting from polyploidization. The use of the AgNOR technique enabled the identification of both the presence of the nucleolus in some micronuclei and the nucleolar organizer region (NOR) behavior of aberrant cells. The NOR-banding technique showed to be an efficient tool for studying the genotoxic effects caused by a xenobiotics and a complex environmental sample.
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Registered trials
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