Effect of fluoride on nucleotides and ribonucleic Acid in germinating corn seedling roots.

Investigation was made for the effect of fluoride on plant growth, acid soluble nucleotides, and RNA in germinating corn seedling roots. Fluoride suppresses root growth as measured by changes in fresh weight. Column chromatographic analyses demonstrated that fluoride modifies ratios of acid soluble nucleotide species. The relative amount of nucleotides is altered mainly due to triphosphate nucleotides of which ATP is most accumulated. Paper chromatographic analyses showed that fluoride induces changes of RNA structure. The RNA is characterized by lowered relative content of cytosine and by increased ratio of cytosine to guanine. Adenine is depressed significantly only in the root tissue treated by the highest fluoride concentration.