The genotoxicity of Zn(II) and Cd(II) in Allium cepa root meristematic cells

57Citations
Citations of this article
23Readers
Mendeley users who have this article in their library.

Abstract

Applications of 5 × 10-4M Zn(II) and 3 × 10-5 M Cd(II) depressed but did not block root growth in Allium cepa L. Both heavy metals were indirect clastogens at these moderate concentrations, for they induced the appearance of chromosomal bridges, but no breaks were detected in the first ana-telophases. On the other hand, Zn and Cd respectively potentiated six and eleven times the direct clastogenic effect of the ß-irradiation produced by [3H]thymidine incorporation into DNA. The chromosomal breaks at mitosis were more abundant when [3H] was incorporated into early replicating DNA. On the other hand, when the incorporation took place in the last half of interphase, the subsequent G2 as well as the prophase were extended (1-7-fold for Zn and 2-7-fold for Cd), and the Sexcess lesions were repaired before anaphase. The whole cycle experienced 1-5 and 2-0-fold increases in the presence of Zn and Cd in relation to that in control meristems (15 h).

References Powered by Scopus

1201Citations
132Readers
Get full text
Get full text
Get full text

Cited by Powered by Scopus

763Citations
731Readers

This article is free to access.

Get full text
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Borboa, L., & De Latorre, C. (1996). The genotoxicity of Zn(II) and Cd(II) in Allium cepa root meristematic cells. New Phytologist, 134(3), 481–486. https://doi.org/10.1111/j.1469-8137.1996.tb04365.x

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 12

71%

Researcher 4

24%

Lecturer / Post doc 1

6%

Readers' Discipline

Tooltip

Agricultural and Biological Sciences 8

50%

Chemistry 3

19%

Environmental Science 3

19%

Biochemistry, Genetics and Molecular Bi... 2

13%

Save time finding and organizing research with Mendeley

Sign up for free