INCORPORATION OF U-14C- AND15N-LEUCINE BY EXCISED BARLEY EMBRYOS

Abstract
Sterile excised barley embryos were allowed to germinate in a medium containing U-14C- and 15N-l-leucine. After periods of 3 and 5 days, the whole embryos were subjected to acid hydrolysis and the resulting amino acids were analysed for isotopic labelling. While there was no significant spread of the 14C labelling to other amino acids, the appearance of 15N in all the amino acids showed that extensive transamination had occurred.