Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 72, Issue 6, Pages 1680-1686Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2009.03.014
Keywords
Allium cepa; Aneugenic; Supernumerary microtubule-organizing center; Mitosis
Categories
Funding
- Biology Department of Instituto de Biociencias from UNESP, Rio Claro, SP, Brazil
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
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Trifluralin is a herbicide capable of interfering in mitotic cell division due to either microtubule depolymerization or alteration in the concentration of calcium ions within the cell. The aim of this study was to investigate the effects of trifluralin in Allium cepa meristematic cells, evaluating the induction mechanisms of the chromosomal and nuclear aberrations. In this study, A. cepa root tips were submitted for 24 h treatment to several concentrations of this herbicide and 48 h recovery post-treatment. The results showed that some concentrations of trifluralin can lead to a mitotic index inhibition, besides inducing chromosomal and nuclear alterations throughout the mitotic cycle. Some of the alterations found seem to be resulting from the herbicide action in different phases and in more than one consecutive cell cycle. (C) 2009 Elsevier Inc. All rights reserved.
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