Mutagenic activity study of the plants Euphorbia milii and Ricinus communis L. through the Allium cepa test

Sueli A. da Silva Samuel G. Ribeiro Ana Elisa N. Bender Fabiana C. Timm Gilberto de Lima Garcias Maria da Graça Martino-Roth About the authors

The aim of this work was to evaluate the mutagenicity and the degree of toxicity of two toxic plants, "castor bean" (Ricinus communis) and the "crown-of-thorns" (Euphorbia milii), using infusions of the seeds of Ricinus communis and the latex of the Euphorbia milii, in meristematic cells of Allium cepa, which were analyzed: the mitotic index (IM), the interphasics anomalies (AI), the mitotic cycle anomalies (ACM), and the total of anomalies (TA). The solutions tests were prepared in three concentrations: MT1 - 0.5 g/l, MT2 - 1.0 g/l, MT3 -2.0 g/l, and MT4 as control. From the Euphorbia milii the latex was extracted and was diluted in distilled water in concentrations: CT1 - 0.5 ml/l, CT2 - 1.0 ml/l, CT3 - 2.0 ml/l, and CT4 as control. The results evidenced that Ricinus communis increased the frequency of mitotic cycle anomalies, as well, the interphasics anomalies, demonstrating, a toxic action for the genetic material, through the test of Allium cepa.

Allium cepa test; mutagenicity; toxic plants; Ricinus communis; Euphorbia milii; Euphorbiaceae

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