镧对黑曲霉抗氧化酶活性的影响  

Effect of La^(3+) on Activities of Antioxidant Enzymes in Aspergillus Niger

作　　者：施翠娥[1] 赵士明[1] 李二千[1] 王臣[1] 王昊[1] 汪承润[1] 

机构地区：[1]淮南师范学院生命科学系,安徽淮南232001

出　　处：《稀土》2010年第4期12-16,共5页Chinese Rare Earths

基　　金：国家自然科学基金项目(20877032);污染控制与资源化研究国家重点实验室开放基金项目(PCRRF08011);安徽省教育厅一般项目(KJ2010B207);淮南师范学院青年基金项目(2009QN06)

摘　　要：应用含有梯度浓度La3+(1、4、16、64、256和512mg/L)的液体培养基培养黑曲霉,3天后测定黑曲霉菌球的生物量及其孢子内SOD、CAT、APX和POD酶活性的变化。结果表明,在1mg/L～64mg/LLa3+剂量范围内,菌体生物量及胞内SOD、CAT、APX和POD酶活性随着La3+浓度的增加而升高,超过此剂量范围则呈现下降趋势。稀土La3+对黑曲霉菌体的生长及其胞内抗氧化酶活性具有"低促高抑"效应。Aspergillus niger was cultivated in liquid culture medium containing La3＋（0,1,4,16,64,256 and 512 mg/L） for three days.Biomass and intracellular SOD,CAT,APX and POD activities in aspergillus niger were determined immediately.The results showed that the biomass as well as SOD,CAT,APX and POD activities increased with the increase of La3＋from 1 to 64mg/L,followed by decrease hereafter.Low-dose stimulation and high-dose inhibition was induced by La3＋on the biomass and activities of antioxidant enzymes in aspergillus niger.

关 键 词：稀土 黑曲霉 生物量 抗氧化酶 低促高抑 

分 类 号：O614.33[理学—无机化学] Q935[理学—化学]