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Ag⁺,Pb²⁺对轮藻光合色素及GAP脱氢酶的影响

Effect of Ag⁺,Pb²⁺ on Photosynthetic Pigment and GAP Dehydrogenase of Chara

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【Author】 DENG Wu-Yuan1,LUO Yan-yun1,WU Chuan-fang1,LUO Tong1,2(1 .College of Life Science ,Sichuan University,Chengdu 610064 ,China ;2 .Department ofBioengineering,Yibin University,Sichuan Yibin 644007 ,China)

【机构】四川大学生命科学学院；四川大学生命科学学院成都610064；成都610064；成都610064；宜宾学院生物工程系；四川宜宾644007；

【摘要】用不同剂量的Ag+、Pb2+胁迫轮藻,研究其光合色素含量及甘油醛-3-磷酸脱氢酶(简称GAP脱氢酶)活性的变化.结果表明胁迫效应随重金属种类、胁迫时间及剂量而变化.胁迫初期二指标变化不大,甚至呈增长趋势;随时间延长二指标显著降低;且胁迫效果Ag+>Pb2+.更多还原

【Abstract】 The change of photosynthetic pigment content and Glyceraldehyde-3-phosphate dehydrogenase(GAPdehydrogenase) activity was studied with Ag+、Pb2 +stressingCharaby different doses .The result in-dicates that stress effect changes with kinds ,stressingti me and doses of heavy metal .During stressinginitialstage ,the twoindexes havelittle change ,showingrisingtrends mainly.But they reduce strikingly withti medelaying. And the stress i mpact is Ag+>Pb2 +.更多还原