Toxicity of Jatropha curcas L. latex in Allium cepa test
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2017
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Resumo
The latex obtained from Jatropha curcas (physic nut) is used in traditional medicine to treat a
variety of disturbs, including burns, hemorrhoids, ringworm and ulcers. Phytochemical analyses have shown that J. curcas
latex contains natural compounds with therapeutic potential. In this study, the toxicity, cytotoxicity and genotoxicity
effects of J. curcas latex on the root cells of Allium cepa were examined. Onion seeds and bulbs were exposed to seven
different concentrations of latex and then the roots were submitted to macro and microscopic analyses. Water and sodium
azide were used as negative and positive controls, respectively. The analysis of root growth showed that J. curcas crude
latex or 50% diluted is highly toxic. Cytogenetic results showed that the mitotic index of the onion roots submitted to latex
treatment decreased significantly compared to the negative control, which suggests that the latex is cytotoxic. High
incidence of chromosome aberrations in the cells treated with J. curcas latex was observed too, indicating that the latex
also presents genotoxic effect. The analyses presented in this report suggest the toxic, cytotoxic and genotoxic effects of J.
curcas latex. Then, the indiscriminate use of J. curcas latex in folk medicine could bring risk to human health.
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Antiproliferative effect, Efeito antiproliferativo, Genotoxicity, Medicinal plants and physic nut, Genotoxicidade, Plantas medicinais e pinhão manso
Citação
CIAPPINA, Angelina Luzia et al. Toxicity of Jatropha curcas L. latex in Allium cepa test. Bioscience Journal, Uberlândia, v. 33, n. 5, p. 1295-1304, 2017. DOI: 10.14393/BJ-v33n5a2017-33835. Disponível em: https://seer.ufu.br/index.php/biosciencejournal/article/view/33835. Acesso em: 5 maio 2023.