| 氮、磷对小新月菱形藻无机碳利用与碳酸酐酶活性的影响 |
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| 引用本文： | 夏建荣,黄瑾. 氮、磷对小新月菱形藻无机碳利用与碳酸酐酶活性的影响[J]. 生态学报, 2010, 30(15): 4085-4092 |
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| 作者姓名： | 夏建荣 黄瑾 |
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| 作者单位： | 1. 广州大学环境科学与工程学院,广东,广州,510006
2. 汕头大学海洋生物研究所,广东,汕头,515063 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 在实验室条件下研究了氮磷浓度变化对小新月菱形藻无机碳利用与碳酸酐酶活性的影响,结果显示小新月菱形藻随培养液中氮、磷浓度的升高比生长速率明显提高。低氮浓度导致胞外碳酸酐酶活性丧失,但胞内碳酸酐酶活性依然存在。高氮浓度下胞内、外碳酸酐酶活性均明显升高。胞内碳酸酐酶活性在高磷浓度下明显升高,但胞外碳酸酐酶活性并没有受到磷浓度变化的影响。高氮、磷浓度培养下的小新月菱形藻的最大光合作用速率(Vmax)、对CO2亲和力(K0.5(CO2))和光系统II最大光化学效率(Fv/Fm)均明显提高。以上结果表明小新月菱形藻可以通过改变胞内、外碳酸酐酶活性调节无机碳利用以适应不同氮磷浓度的环境。
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| 关 键 词： | 氮；磷；小新月菱形藻；无机碳利用；碳酸酐酶 |
| 收稿时间： | 2009-12-27 |
| 修稿时间： | 2010-06-25 |
Impacts of nitrogen and phosphorus on inorganic carbon utilization and carbonic anhydrase activity in Nitzschia closterium f. minutissima |
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| Xia jianrong and. Impacts of nitrogen and phosphorus on inorganic carbon utilization and carbonic anhydrase activity in Nitzschia closterium f. minutissima[J]. Acta Ecologica Sinica, 2010, 30(15): 4085-4092 |
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| Authors: | Xia jianrong and |
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| Affiliation: | Guangzhou University, |
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| Abstract: | The increase in the input of nutrients,mainly nitrogen(N) and phosphorus(P),to marine water-with eutrophication as consequence-is a worldwide phenomenon.The supply of these nutrients would usually result in the occurrence of the red tide.Nitzschia closterium f.minutissima,a red tide alga,is distributed in coastal marine water in China.In this paper,impacts of different nitrogen and phosphorus concentrations on inorganic carbon utilization and carbonic anhydrase activity in N.closterium f.minutissima were in... |
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| Keywords: | Nitrogen Phosphorus Nitzschia closterium f. minutissima Inorganic carbon uilitization Carbonic anhydrase |
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