| Mn2+ 对铜绿微囊藻生长和养分吸收的影响 |
| Effects of Mn2+ on the Growth of Microcystis aeruginosa and Uptake of Nutients |
| 投稿时间：2007-12-11 |
| DOI： |
| 中文关键词:铜绿微囊藻 Ｍｎ２＋ 生物量 养分吸收 |
| 英文关键词:Microcystis aeruginosa Mn^2＋ biomass nutriment uptake |
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| 中文摘要: |
| 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。
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| 英文摘要: |
| 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 Mn^2＋concentrations in culture medium （0, 10, 100, 1000, 10 000, 30 000 nmol/L） Results showed that the optimum Mn^2＋ 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 Mn^2＋ on the uptake of N were found in this study. However, the uptake of P by the algae responded strongly to Mn^2＋ 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 ofMn^2＋ in culture medium also inhibited Mn^2＋ uptake by algae. |
| 刘静,徐轶群,盛海君,封克.2009.Mn2+ 对铜绿微囊藻生长和养分吸收的影响[J].水生态学杂志,30(1):16-20. |
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