The effect of x-irradiation upon potassium retentivity of yeast

✍ Scribed by Bruce, A. K. ;Stannard, J. N.

• Publisher: Wiley (John Wiley & Sons)
• Year: 1958
• Tongue: English
• Weight: 661 KB
• Volume: 51
• Category: Article
• ISSN: 0095-9898
• DOI: 10.1002/jcp.1030510303

✦ Synopsis

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FOUR FIQURES

Previous studies in this laboratory (Bair and Stannard, '55a, '55b ; Bair, Stannard and Bruce, '56) have indicated a relationship between potassium transfer in yeast and changes in metabolic activity induced by irradiation. Recently we (Bair et al., '56) have shown by direct measurements that there is a marked increase in potassium leakage from yeast following x-irradiation but few details could be included in this preliminary report. Also, there has been essentially no indication as to the specificity o r nature of the effect. This paper presents evidence f o r a dependence of the measured effects of x-irradiation on potassium retentivity of yeast upon the nature of the substrate utilized and the presence of oxygen in the medium, along with the experiments showing the relative specificity of the radiation effect on ion transport.

Methods

lorn exchamge. Measurements of ion exchange were made employing a column elution technique, as devised by Roth-This paper is based on work performed under contract with the United States Atomic Energy Commission a t the University of Rochester Atomic Energy Pro- ject, Rochester, New York. Some of it appears in more detail in a thesis by A. K.