What question did this study set out to answer?

To evaluate the cytotoxicity and mutagenicity of river water exposed to chromium-contaminated tannery effluent using the Allium cepa test system.

January 1, 2004CYTOLOGIAOpen Access

Mutagenic Potential Evaluation of the Water of a River That Receives Tannery Effluent Using the Allium cepa Test System

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Authors

SMSílvia Tamie MatsumotoBiocon (Switzerland)MMMaria Aparecida Marin‐MoralesUniversidade Estadual Paulista (Unesp)

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Implication

Bioassay demonstrates high cytotoxicity and chromosomal aberrations in Allium cepa root tips exposed to tannery-polluted river water, indicating significant genotoxic environmental risks.

Key Points

To evaluate the cytotoxicity and mutagenicity of river water exposed to chromium-contaminated tannery effluent using the Allium cepa test system.
Collected seasonal water samples during 2001 and 2002 across five locations along the Sapucaizinho River in São Paulo, Brazil.
Germinated Allium cepa seeds in water from the collection sites, alongside a negative control (Milli-Q water) and a positive control (aqueous chromium solution).
Prepared root tip cell slides using Feulgen staining to evaluate mitotic indices and detect chromosomal and mitotic abnormalities.
River sampling sites most heavily affected by chromium discharge showed low mitotic indices, indicating marked inhibition of cell division.
Root cells exposed to effluent-compromised water displayed elevated rates of mitotic irregularities, including irregular anaphases, chromosomal adherences, micronuclei, and binucleated or multinucleated cells.

Cite This Study

Matsumoto et al. (2004) studied this question.

synapsesocial.com/papers/6a9f5b746b2f41ee0d04ec95 https://doi.org/10.1508/cytologia.69.399

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Implication

Bioassay demonstrates high cytotoxicity and chromosomal aberrations in Allium cepa root tips exposed to tannery-polluted river water, indicating significant genotoxic environmental risks.

Mutagenic Potential Evaluation of the Water of a River That Receives Tannery Effluent Using the Allium cepa Test System

Discussion

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Implication

Key Points

Cite This Study

Mutagenic Potential Evaluation of the Water of a River That Receives Tannery Effluent Using the Allium cepa Test System

Discussion

Member takes

Implication

Key Points

Cite This Study

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