Effects of trivalent and hexavalent chromium on root growth and cell division of Allium cepa
By Donghua Liu, Wusheng Jiang, Mao-Xue Li. 2008
87 citations recorded by the source corpus.
The effects of trivalent and hexavalent chromium on root growth, cell division and chromosome morphology of Allium cepa were studied. The concentrations used of chromium nitrate and potassium dichromate were 2 × 10-1, 2 × 10-2, 2 × 10-3, 2 × 10-4, 2 × 10-5, 2 × 10-6, and 2 × 10-7M. The results showed that both trivalent and hexavalent chromium inhibit root growth and cause mitotic irregularities comprising c-mitosis, anaphase bridges, chromosome stickiness, and chromosome fragmentation and lagging. When compared with chromium nitrate on the equimolar basis, potassium dichromate showed a stronger inhibitory and toxic effect on root growth and cell division, respectively. The possible mechanism of the Cr poisoning of root meristem cells of Allium cepa is also briefly discussed.
Subfields: Biomedical Engineering, Health, Toxicology and Mutagenesis, Water Science and Technology
View Paper: https://www.semanticscholar.org/paper/a33575497b6dc36d8a070feeeb6cb5aa37612605
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Citations in the corpus
- Genotoxicity testing of quizalofop-P-ethyl herbicide using the Allium cepa anaphase-telophase chromosome aberration assay (2008, background): “LIU et al. (1992) suggested that sticky chromosomes reflect highly toxic effects, usually of an irreversible type, and probably lead to cell death.”
- Chromium toxicity and tolerance in plants (2013, background): “Liu et al. (1992) reported mitotic irregularities including C- mitosis, anaphase bridges, chromosome stickiness, chromosome fragmentation, and lagging in root tip cells of A. cepa under Cr(III) and Cr(VI) stress.”