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Chromosomal and Nuclear Alterations in the Root Tip Cells of Vicia faba Induced by Sodium Chloride

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ABSTRACT: 

Despite the well-known toxic effect of chloride sodium (NaCl), only few studies analyze its genotoxic effect on crops. Micronucleus assay is an efficient tool for the measure of chromosomal DNA damages. Based on this test, the effects of salt on micronucleus induction, and on chromosome and nucleus changes, were investigated in Vicia faba root tips treated with NaCl (electrical conductivity = 25 dS/m) during 24 hours. V. faba meristematic cells showed a significant increase in the number of micronuclei compared with the control. Micronucleus size varied from small to large and appeared at different stages of mitosis. Moreover, different chromosomal aberrations like breaks, bridges, rings, vagrant, and lagging chromosomes, were observed in the metaphase, the anaphase, and the telophase. In addition, nuclear alterations in the interphase were characterized by the presence of binucleated cells, strap nuclei with lesions, hyperchromasia, buds, and nuclei with irregular shapes and lesions.
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Keywords: Vicia faba; chromosomal aberrations; genotoxicity; micronucleus; nuclear abnormalities; salt stress

Document Type: Research Article

Publication date: 01 February 2018

This article was made available online on 19 July 2017 as a Fast Track article with title: "Chromosomal and nuclear alterations in the root-tip cells of Vicia faba induced by sodium chloride".

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  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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