Carbon-14 Labelled Photosynthate in Wheat Root Exudates

Abstract

THERE is abundant evidence that organic compounds are exuded from the roots of intact plants¹, but the amounts are small, and to obtain sufficient material for identification even by paper chromatography it is necessary to collect, exudates from a large number of plants or from one plant over a long period. To overcome these difficulties a sensitive method using radioactive labelling has been developed which enables short-term studies on the exudation by roots of individual wheat plants to be used.