| 应用快速光曲线方法研究两株海洋超微型真核藻光合特性的差异 |
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| 引用本文： | 廖渝,吴文学,黄邦钦.应用快速光曲线方法研究两株海洋超微型真核藻光合特性的差异[J].台湾海峡,2014(3):312-317. |
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| 作者姓名： | 廖渝 吴文学 黄邦钦 |
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| 作者单位： | 福建省海陆界面生态环境重点实验室 厦门大学环境与生态学院,福建厦门361102 |
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| 基金项目： | 国家自然科学基金资助项目（41176112）;国家海洋局海洋公益资助项目（201005015-5,201105021-03）;国家海洋专项资助项目（GASI-03-01-02-03） |
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| 摘 要： | 超微型浮游植物是海洋中重要的初级生产者,浮游植物吸收的光一部分用于光合作用,另一部分以荧光或热的形式耗散.本文利用调制叶绿素荧光仪（Pulse-Amplitude-Modulation,PAM）测定2株海洋超微型真核藻：细小微胞藻（Micromonas pusilla）和梨形脂金藻（Pinguiochrysis pyriformis）在不同光强下的叶绿素荧光和快速光曲线.结果表明细小微胞藻和梨形脂金藻在不同光强下的光系统II（PS II）的最大光量子产量（Fv/Fm）分别为0.572-0.634和0.624-0.426;最大相对电子传递速率（rETRmax）分别为61.58-163.56和76.69-143.17μmol/m2·s-1;半饱和光强（Ik）分别为212.37-946.00和307.44-671.28μmol·m-2·s-1;光能利用效率（α）分别为0.29-0.17和0.25-0.21.细小微胞藻和梨形脂金藻分别属于高光型和低光型的超微型浮游植物,光照条件会显著影响超微型浮游植物的光合特性,但不同类型的超微型浮游植物的光合特性对光的响应存在差异.
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| 关 键 词： | 海洋生物学 快速光曲线 叶绿素荧光 光合特性 超微型真核藻 |
Characterization of photosynthetic properties of two marine picophytoplankton using the rapid light curve |
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| LIAO Yu,WU Wen-xue,HUANG Bang-qin.Characterization of photosynthetic properties of two marine picophytoplankton using the rapid light curve[J].Journal of Oceanography In Taiwan Strait,2014(3):312-317. |
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| Authors: | LIAO Yu WU Wen-xue HUANG Bang-qin |
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| Institution: | ( Fujian Provincial Key Laboratory of Coastal Ecology and Environmental Studies, College of the Environment and Ecology, Xiamen University, Xiamen 361012, China) |
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| Abstract: | Picophytoplankton were the most important primary producers in marine ecosystem. The light energy absorbed by phytoplankton were separated into two parts, one was used in photosynthesis process, the other was dissipated through chlorophyll fluorescence or thermal energy. In this study, we used pulse-amplitude-modulation （PAM） fluorometry to investigate the chlorophyll fluorescence and the rapid light curve of two marine picophytoplankton ： Micromonas pusilla and Pinguiochrysis pyriformis under different light conditions. The results showed the maximum quantum yield of PSII （ Fv/Fm ） for M. pusilla under different light conditions ranged from 0. 572 to 0. 634, while the P. pyriformis obtained the values from 0. 624 to 0. 426. The maximum relative electron transport rate （ rETRmox ）, the minimum saturating irradiance （ Ik ） and the light energy utilization efficiency （α） for M. pusilla and P. pyriformis were 61.58 - 163.56 and 76. 69 - 143.17 μmol/m2 · S-1, 212.37 -946.00 and 307.44 - 671.28 μmol/m2 · s-1, 0. 29 -0. 17 and 0. 25 -0. 21 , respectively. M. pusilla was characterized as a high-light type picophytoplankton and P. pyriformis was recognized as a low-light type pieophytoplankton. The light condition would significantly influence the photosynthetic properties of picophytoplankton, but the responses were different in M. pusiUa and P. pyriformis. |
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| Keywords: | marine biology rapid light curve chlorophyll fluorescence photosynthetic property picophytoplankton |
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