稀土元素镧对满江红鱼腥藻的生理影响  

Physiological Effects of Lanthanum on Cyanobacterium Anabaena azollae

作　　者：宋凌云[1] 胡文月 赵继贞[1] 邵宏翔[2] 张昀[1] 

机构地区：[1]北京大学生命科学学院,北京100871 [2]北京大学地质系,北京100871

出　　处：《北京大学学报（自然科学版）》2000年第6期783-788,共6页Acta Scientiarum Naturalium Universitatis Pekinensis

摘　　要：对稀土元素镧 (La)对满江红鱼腥藻 (Anabaenaazollae)的生理影响和满江红鱼腥藻对镧的富集作用进行了研究。结果显示低浓度镧对满江红鱼腥藻生长表现出促进作用 ,高浓度则表现出抑制作用。镧对满江红鱼腥藻的叶绿素a的合成、光合放氧活性也有影响 ,同样表现为低浓度促进 ,高浓度抑制。满江红鱼腥藻对镧的富集作用可能与其光合作用电子传递和能量合成有关。Experiments of the influence of rare earth element Lanthanum on the growth, chlorophyll a and oxygen production of cyanobacterium Anabaena azollae have been carried out. The results indicate that Lanthanum has stimulating effect on the growth of Anabaena azollae at lower concentration but has inhibiting effect at higher concentration. Lanthanum treatment has significant influence on its chlorophyll a synthesis and oxygen\|produced activity. It can also be concluded that lanthanum can be accumulated by Anabaena azollae cells, and the cyanobacterial physiological process is involved in lanthanum bioaccumulation.

关 键 词：稀土元素 生理影响 富集作用 满江红鱼腥藻 镧 

分 类 号：Q945[生物学—植物学]