Toxic Effect of Pseudomonas tabaci on RNA Metabolism in Tobacco and Its Counteraction by Kinetin

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Science  10 Jul 1964:
Vol. 145, Issue 3628, pp. 165
DOI: 10.1126/science.145.3628.165


Treatment of intact tobacco leaves with toxin-containing culture filtrates of Pseudomonas tabaci markedly reduced the ribonucleic acid content of the leaves. The decrease was counteracted by spraying the leaves with 10-4M kinetin. Simultaneously with the decrease in RNA, the ribonuclease activity of extracts from tissues treated with toxin increased. Experiments on the effect of kinetin on the ribonuclease activity of toxin-treated tissues gave no consistent results.