Exchange of Phosphorus Atoms in Plants and Seeds

Abstract

IN a letter to NATURE¹ we communicated the results of experiments carried out on maize plants using radioactive phosphorus as an indicator of the behaviour of the phosphorus atoms. The results obtained showed unambiguously that the greater part of the phosphorus atoms present in the leaves and in the roots of the plants investigated is not permanently in one place, but migrates from leaf to leaf. We extended the experiments described above and investigated the behaviour of phosphorus in the sunflower.