Monsanto Agricultural Products Company, 800 N. Lindbergh Boulevard, St. Louis, Missouri 63166.
Plant Physiol. 1978 Sep;62(3):430-3. doi: 10.1104/pp.62.3.430.
Changes in the metabolism of polyamines, which seem to be involved in transcription and translation in animal systems, have been studied in cultured cells of Daucus carota (carrot) undergoing embryogenesis. Putrescine levels were elevated by as much as 2-fold over the control within 24 hours after transfer of the cells to embryogenic medium. Spermidine levels were elevated also but spermine levels appeared to be lower in embryogenic cells. Embryogenic cells incorporated [(14)C]arginine into putrescine at two times the rate of control cells. These changes suggest that polyamines may be involved in cellular differentiation during embryogenesis.
多胺代谢的变化,似乎参与了动物系统中的转录和翻译,已经在经历胚胎发生的胡萝卜(Daucus carota)培养细胞中进行了研究。将细胞转移到胚胎发生培养基中 24 小时后,腐胺水平比对照升高了 2 倍。精脒水平也升高了,但胚胎发生细胞中的精胺水平似乎较低。胚胎发生细胞将 [(14)C]精氨酸掺入腐胺的速度是对照细胞的两倍。这些变化表明,多胺可能参与胚胎发生过程中的细胞分化。