PMID: 13438922May 25, 1957Paper

Experimentally induced chromosome abberrations in plants. II. The effect of cyanide and other heavy metal complexing agents on the production of chromosome aberrations by x-rays

The Journal of Biophysical and Biochemical Cytology


The discovery of Lilly and Thoday, that the presence of potassium cyanide (KCN) increases the production of chromosome aberrations by x-rays in anoxia, but has no effect on the production of chromosome aberrations by x-rays in air, was confirmed. In the presence of cyanide, the effect of a given dose of x-rays in nitrogen was found to be even greater than the effect of the same dose of x-rays in air. The cyanide effect on x-ray breakage in nitrogen was obtained at cyanide concentrations as low as 2 x 10(-5)M. The breakage obtained after the combined x-ray-cyanide treatments was of the x-ray type, as evidenced by the distribution of breaks within and between the chromosomes. A number of other heavy metal complexing agents as well as some other compounds were tested for their ability to increase x-ray breakage in nitrogen and air. Of these compounds only cupferron proved to be effective. The results are discussed and it is concluded that the increased x-ray breakage in the presence of cyanide or cupferron cannot be due to an accumulation of peroxides. Instead it is suggested that the cyanide effect may be due to a complex formation between the active agents and heavy metals, presumably iron, within the chromosomes. The consequenc...Continue Reading


Aug 5, 1955·Science·S WOLFF, H E LUIPPOLD
Dec 3, 1955·Nature·V G ALLFREY, A E MIRSKY
Sep 25, 1956·The Journal of Biophysical and Biochemical Cytology·B A KIHLMAN
Jan 1, 1955·Zeitschrift für induktive Abstammungs- und Vererbungslehre·F H SOBELS
Jan 1, 1952·Proceedings of the National Academy of Sciences of the United States of America·E D KingK Sax
Mar 1, 1954·Proceedings of the National Academy of Sciences of the United States of America·K Mikaelsen


Mar 25, 1959·The Journal of Biophysical and Biochemical Cytology·B A KIHLMAN
Oct 1, 1982·Environmental Science & Technology·G R Hoffmann
Jan 1, 1983·Hereditas·A R Prina, E A Favret
Jan 1, 1962·International Journal of Radiation Biology and Related Studies in Physics, Chemistry, and Medicine· van der MEERD van BEKKUM
Aug 1, 1961·Biochemical Pharmacology· van der MEER, P W VALKENBURG

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