Impacts of CO2 enrichment on growth and photosynthesis in freshwater and marine diatoms
文献类型：期刊论文
| 作者 | Hu Hanhua1; Gao Kunshan1,2 |
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2008-11-01 |
| 卷号 | 26期号:4页码:407-414 |
| 关键词 | carbon dioxide Chaetoceros muelleri elevated CO2 growth Nitzschia palea photosynthesis |
| ISSN号 | 0254-4059 |
| 通讯作者 | Hu, HH, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 中文摘要 | The physiological responses of Nitzschia palea Kutzing, a freshwater diatom, to elevated CO2 were investigated and compared with those of a marine diatom, Chaetoceros muelleri Lemmermann previously reported. Elevated CO2 concentration to 700 mu l/L increased the dissolved inorganic carbon (DIC) and lowered the pH in the cultures of N. palea, thus enhancing the growth by 4%-20% during the whole growth period. High CO2-grown N. palea cells showed lower levels of dark respiration rates and higher I (k) values. Light-saturated photosynthetic rates and photosynthetic efficiencies decreased in N. palea with the doubling CO2 concentration in airflow to the bottom of cultures, although the doubling CO2 concentration in airflow to the surface cultures had few effects on these two photosynthetic parameters. N. palea cells were found to be capable of using HCO3 (-) in addition to gaseous CO2, and the CO2 enrichment decreased their affinity for HCO3 (-) and CO2. Although doubled CO2 level would enhance the biomass of N. palea and C. muelleri to different extents, compared with the marine diatom, it had a significant effect on the specific growth rates of N. palea. In addition, the responses of photosynthetic parameters of N. palea to doubled CO2 concentration were almost opposite to those of C. muelleri. |
| 英文摘要 | The physiological responses of Nitzschia palea Kutzing, a freshwater diatom, to elevated CO2 were investigated and compared with those of a marine diatom, Chaetoceros muelleri Lemmermann previously reported. Elevated CO2 concentration to 700 mu l/L increased the dissolved inorganic carbon (DIC) and lowered the pH in the cultures of N. palea, thus enhancing the growth by 4%-20% during the whole growth period. High CO2-grown N. palea cells showed lower levels of dark respiration rates and higher I (k) values. Light-saturated photosynthetic rates and photosynthetic efficiencies decreased in N. palea with the doubling CO2 concentration in airflow to the bottom of cultures, although the doubling CO2 concentration in airflow to the surface cultures had few effects on these two photosynthetic parameters. N. palea cells were found to be capable of using HCO3 (-) in addition to gaseous CO2, and the CO2 enrichment decreased their affinity for HCO3 (-) and CO2. Although doubled CO2 level would enhance the biomass of N. palea and C. muelleri to different extents, compared with the marine diatom, it had a significant effect on the specific growth rates of N. palea. In addition, the responses of photosynthetic parameters of N. palea to doubled CO2 concentration were almost opposite to those of C. muelleri. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 学科主题 | Limnology; Oceanography |
| 类目[WOS] | Limnology ; Oceanography |
| 研究领域[WOS] | Marine & Freshwater Biology ; Oceanography |
| 关键词[WOS] | INORGANIC CARBON ACQUISITION ; ATMOSPHERIC CO2 ; PHYTOPLANKTON ; ALGAE ; LIMITATION ; PHOTOINHIBITION ; AVAILABILITY ; MECHANISMS ; ANHYDRASE ; LIGHT |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [90411018, 30270036]; Chinese Academy of Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000262669100012 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/7888]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Shantou Univ, Inst Marine Biol, Shantou 515063, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu Hanhua,Gao Kunshan. Impacts of CO2 enrichment on growth and photosynthesis in freshwater and marine diatoms[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2008,26(4):407-414. |
| APA | Hu Hanhua,&Gao Kunshan.(2008).Impacts of CO2 enrichment on growth and photosynthesis in freshwater and marine diatoms.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,26(4),407-414. |
| MLA | Hu Hanhua,et al."Impacts of CO2 enrichment on growth and photosynthesis in freshwater and marine diatoms".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 26.4(2008):407-414. |
入库方式： OAI收割
来源：水生生物研究所
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