Cytogenetic Effects of Wastes of Copper Mine on Root Tip Cells of Allium cepa L.

Abstract

The cytogenetic effects of the wastes of copper mine were investigated using root tip cells of Allium cepa L. The roots were treated with 10, 75 and 100 percent of copper wastes at 36 hour. Copper wastes caused some chromosomal abnormalities in root tip cells. It was found that copper wastes have a marked mitodepressive action on mitosis.

Toxicity and genotoxicity assessment in sediments from the Matanza-Riachuelo river basin (Argentina) under the influence of heavy metals and organic contaminants

“…In general the acidic shaking extracts were the most genotoxic. The metals Zn, Cr, Pb and Cu could cause breaks in the chromosomes, delays and bridges, and increases in the frequency of MN (Borboa and De La Torre, 1996;Inceer et al, 2000;Matsumoto et al, 2006). However, no correlations were found between genotoxic parameters and metals.…”

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“…Metals such as Cd, Cu, Cr, Pb and Zn could cause DNA damage, chromosome aberrations, oxidative stress and micronuclei in root cells of A. cepa (Borboa & De La Torre, 1996;Inceer et al, 2000;Patnaik et al, 2013;Jiang et al, 2014). However, no relationship was found between the genotoxicity of the pore water and the heavy metal concentrations in the acid extract, probably due to the presence of other toxic compounds not considered in this study.…”

Pollination Biology and Environmental Water Pollution Indicator of Onion (Allium cepa L.)

“…cepa L. meristematic root cells assay efficiently evaluates different aqueous concentrations of copper mine waste causing cytogenetic effects such as chromosomal abnormalities. The 100 percent concentration of copper mine waste i.e., raw sample presented the highest toxicity and exhibit a relationship with the inhibition of MI along with chromosome breaks, delay, bridges and adherence were the most frequent Chromosomal aberration (CA) observed [27].…”