微量元素铁对3种水华藻类生长的影响  

Effects of Trace Element Iron ont he Growth of Three Kinds of Bloom-forming Alage

作　　者：马剑敏[1] 王洁玉[1] 张婵[1] 赵闪闪[1] 褚一凡[1] 姜小玉[1] 

机构地区：[1]河南师范大学生命科学学院,河南新乡453007

出　　处：《河南师范大学学报（自然科学版）》2017年第5期108-114,共7页Journal of Henan Normal University(Natural Science Edition)

基　　金：河南省重点科技攻关项目(152102310087);河南省教育厅科学技术重点研究项目(14B180009)

摘　　要：在温度为25℃,光照强度为2500lx,光暗比为14h∶10h的实验室条件下,研究微量元素铁对3种水华藻类(铜绿微囊藻、小球藻和小环藻)生长的影响.结果表明:当其他营养盐富足时,培养液中的微量元素铁对3种水华藻类的生长均有显著的影响.在培养中期,较高的铁浓度对细胞密度和叶绿素a质量浓度均有明显的促进作用;在培养20d后,当培养液中的铁浓度分别低至0.19~0.24、0.22~0.47和0.15~0.16mg·L^(-1)时,铜绿微囊藻、小球藻和小环藻细胞增殖缓慢.因此,有效调节微量元素铁的浓度也会影响到自然水体中藻类的生长.At present study,Microcystis aeruginosa,Chlorella vulgaris and Cyclotellasp.was cultured at the certain laboratory conditions[temperature of 25 ℃,illumination intensity of 2500 lx,light:dark of 14h∶10h]to study the effects of iron on the growth of three kinds of bloom-forming algae.The results showed that the trace element iron had significant impact on the growth of three kinds of bloom-forming algae with other nutrient rich.In the medium culture period,the higher iron concentration promoted the cell density and chlorophyll a content of three kinds ofalgae;After cultured 20 days,when the iron concentration of the medium was consumed as low as 0.19-0.24,0.22-0.47 and 0.15-0.16mg·L^(-1) respectively,the cell proliferation of Microcystis aeruginosa,Chlorella vulgaris and Cyclotellasp.was slow.Therefore,effectivere gulation of the iron concentration can also affect the growth of algae in the natural water.

关 键 词：铁浓度 铜绿微囊藻 小球藻 小环藻 细胞密度 叶绿素a质量浓度 

分 类 号：Q178.1[生物学—水生生物学] Q945.79[生物学—普通生物学]