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Position: Home > Articles > Effects of Mn~(2+) on the Growth of Microcystis aeruginosa and Uptake of Nnutrients Journal of Hydroecology 2009,2 (1) 16-20

Mn~(2+)对铜绿微囊藻生长和养分吸收的影响

作  者:
刘静;徐轶群;盛海君;封克
单  位:
扬州大学环境科学与工程学院
关键词:
铜绿微囊藻;Mn2+;生物量;养分吸收
摘  要:
在不同Mn2+浓度(0、10、100、1000、10000、30000nmol/L)条件下,研究了Mn2+对铜绿微囊藻的生长以及N、P、Mg等营养元素的吸收的影响。100nmol/L的Mn2+处理获得最大的生物量,30000nmol/L时的生物量最小;100nmol/LMn2+处理的铜绿微囊藻叶绿素a含量最高,30000nmol/LMn2+处理的叶绿素a含量最低;不同Mn2+浓度处理对铜绿微囊藻的N吸收影响不大,但明显影响P的吸收:100nmol/L的Mn2+处理培养基中P减少量是30000nmol/L的Mn2+处理组P减少量的5倍左右;过高的Mn2+浓度也影响了铜绿微囊藻对Mg2+的吸收。结果表明Mn2+浓度为100nmol/L时铜绿微囊藻在各个方面的表现最好。
译  名:
Effects of Mn~(2+) on the Growth of Microcystis aeruginosa and Uptake of Nnutrients
作  者:
LIU Jing,SHENG Hai-jun,XU Yi-qun,FENG Ke(College of Environmental Science and Engineering,Yangzhou University,Yangzhou 225009,China)
关键词:
Microcystis aeruginosa;Mn2+;biomass;nutriment uptake
摘  要:
Mn is one of the essential trace elements for algae growth,and it functions in many physiological aspects in algae cell.However,effects of Mn on the growth of Microcystis aeruginosa were rarely studied.In this study,the biomass,chlorophyll a concentration of Microcystis aeruginosa and uptake of N,P and Mg during incubation were measured under six different Mn2+ concentrations in culture medium(0,10,100,1000,10 000,30 000 nmol/L).Results showed that the optimum Mn2+ concentration in medium for algae growth was 100 nmol/L,in which the highest biomass was obtained.In treatment of 30 000 nmol /L,the growth of algae was severely inhibited and the biomass was the lowest.Similar trend was observed for the concentration of chlorophyll a.No significant impacts of Mn2+ on the uptake of N were found in this study.However,the uptake of P by the algae responded strongly to Mn2+concentration,and the reduction of P concentration in culture medium treated with 100 nmol/L was 5 times than with 30 000 nmol/L.High concentration of Mn2+ in culture medium also inhibited Mg2+ uptake by algae.

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