Cell Biological Studies on the Mechanism of Development and Differentiation Ⅷ 1. Participation of Ornithine Decarboxylase in the Putrescine Biosynthesis in Corn Embryo.

생체발생 및 분화기구의 세포생물학적 연구Ⅷ 1. 옥수수 배에서 Putrescine 합성에 관여하는 Ornithine Decarboxylase

Kinetin(4.7$\times$10\ulcornerM) and 6-benzylaminopurine (2.2$\times$10\ulcornerM) were found to increase ca. 1.5-fold putrescice content in corn grown in medium containing kinetin and 6-benzylaminopurine(6-BAP) for 3days whereas kinetin was found to decrase ca. 30% spermidine and spermine, respectively. KCI (3$\times$10\ulcornerM) was found to decrease more than 50% putrescine content. After germination, ornithine decarboxylase activity was observed to increase constantly whereas arginine decarboxylase activity remained constant, suggesting involvement in putrescine biosynthesis. 6-benzylaminopurine was shown to increase more activities of arginine ornithine decarboxylase than kinetin when they were added to medium.