Data/hora: 05/06/2024 07:21:21

Provedor de dados: | 85
País: | Argentina
Título: | Effects of cadmium on root growth, cell division and micronuclei formation in root tip cells of Allium cepa var. agrogarum L
Autores: | Wang,QL; Zhang,LT; Zou,JH; Liu,DH; Yue,JY.
Data: | 2014-12-01
Ano: | 2014
Palavras-chave: | Allium cepa var. agrogarum L; Cadmium (Cd); Chromosome disorder; Micronuclei.
Resumo: | The effects of various cadmium (Cd) concentrations (10, 50 and 100 &amp;#956;M) on root growth, cell division and micronuclei formation in root tip cells of Allium cepa var. agrogarum L. were investigated to better understand the processes of Cd-induced apoptosis. The results indicated that 10 &amp;#956;M of Cd had an obviously passive influence on root growth during the 24 h treatment, and that the influence was even more serious with increasing Cd concentrations and duration of treatments. The mitotic index decreased with increasing Cd concentration and duration of treatments. Cadmium induced c-mitosis, chromosome bridges, chromosome stickiness and micronuclei. The frequency of cells with these disorders varied with prolonging the duration of treatments and increasing Cd concentrations. Micronuclei (MN) are biomarkers of genotoxic events. Our analyses proved the presence of a number of cells carrying micronucleus, and the elimination of the exceeding material itself, after exposing A. cepa var. agrogarum L. root tips to the Cd treatments. A number of micronuclei and nuclear anomalies were noticed at 10&amp;#956;M Cd. Inferences about the implications of the elimination of genetic material from micronuclei, such as cell viability and apoptosis, are also presented.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572014000200009
Editor: | Fundación Rómulo Raggio
Formato: | text/html
Fonte: | Phyton (Buenos Aires)  v.83 n.2 2014
Fonte: | info:eu-repo/semantics/openAccess