中国稀土学报(英文版)
中國稀土學報(英文版)
중국희토학보(영문판)
JOURNAL OF RARE EARTHS
2001年
2期
129-133
,共5页
陈为钧%顾月华%王圣兵%赵贵文
陳為鈞%顧月華%王聖兵%趙貴文
진위균%고월화%왕골병%조귀문
The effects of La3＋ on total activity and initial activity of RuBPCase (ribulose 1,5-bisphosphate carboxylase) in tobacco seedlings were studied. When treated with 20～80 μmol.L-1 LaCl3 in Hoagland solution by water culture, the activities of RuBPCase were raised, and the activation action of LaCl3 on initial activity was higher than that on total activity. But when the concentration of LaCl3 surpassed 80 μmol.L-1, the activities of RuBPCase were inhibited. It was also found that La3+ and Ce3+ can replace Mg2+ to activate the activity of RuBPCase in the enzymatic reaction, and the activation actions of La3+ and Ce3+ on the purified enzyme are higher than those on crude enzyme. The results indicate that La3＋ activates the activity of RuBPCase in vivo as well as in vitro.
