Photosynthetic bicarbonate utilization in Porphyra haitanensis (Bangiales, Rhodophyta)
文献类型：期刊论文
| 作者 | Zou, DH; Gao, KS |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2002-10-01 |
| 卷号 | 47期号:19页码:1629-1633 |
| 关键词 | Porphyra haitanensis photosynthesis bicarbonate inorganic carbon utilization carbonic anhydrase |
| ISSN号 | 1001-6538 |
| 通讯作者 | Gao, KS, Shantou Univ, Ctr Sci, Inst Marine Biol, Shantou 515063, Peoples R China |
| 中文摘要 | The activities of carbonic anhydrase (CA) and photosynthesis of Porphyra haitanensis were investigated in order to see its photosynthetic utilization of inorganic carbon source. Both intra- and extra-cellular CA activities existed in the thallus. CA inhibitors, acetazolamide (AZ) and ethoxyzolamide (EZ), remarkably depressed the photosynthetic oxygen evolution in seawater of pH 8.2 and 10.0, and EZ showed stronger inhibition than AZ. The observed net photosynthetic rate In seawater of pH 8.2 was much higher than that of CO2 supply theoretically derived from spontaneous dehydration of HCO3-. P. haitanensis also showed a rather high pH compensation point (9.9). The results demonstrated that P. haitanensis could utilize bicarbonate as the external inorganic carbon source for photosynthesis. The bicarbonate utilization was closely associated with HCO3- dehydration catalyzed by extracellular CA activity. The inorganic carbon composition in seawater could well saturate the photosynthesis of P. haitanensis. The low K-m value and compensation points for inorganic carbon reflected the existence of CO2-concentrating mechanism in this alga. |
| 英文摘要 | The activities of carbonic anhydrase (CA) and photosynthesis of Porphyra haitanensis were investigated in order to see its photosynthetic utilization of inorganic carbon source. Both intra- and extra-cellular CA activities existed in the thallus. CA inhibitors, acetazolamide (AZ) and ethoxyzolamide (EZ), remarkably depressed the photosynthetic oxygen evolution in seawater of pH 8.2 and 10.0, and EZ showed stronger inhibition than AZ. The observed net photosynthetic rate In seawater of pH 8.2 was much higher than that of CO2 supply theoretically derived from spontaneous dehydration of HCO3-. P. haitanensis also showed a rather high pH compensation point (9.9). The results demonstrated that P. haitanensis could utilize bicarbonate as the external inorganic carbon source for photosynthesis. The bicarbonate utilization was closely associated with HCO3- dehydration catalyzed by extracellular CA activity. The inorganic carbon composition in seawater could well saturate the photosynthesis of P. haitanensis. The low K-m value and compensation points for inorganic carbon reflected the existence of CO2-concentrating mechanism in this alga. |
| WOS标题词 | Science & Technology |
| 学科主题 | Multidisciplinary Sciences |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | EXTERNAL CARBONIC-ANHYDRASE ; MARINE MACROALGAE ; INORGANIC CARBON ; ULVA-LACTUCA ; LAMINARIA-SACCHARINA ; ACQUISITION ; ALGAE ; RED ; CHLOROPHYTA ; MECHANISMS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000178124400011 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/9794]  |
| 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.Shantou Univ, Ctr Sci, Inst Marine Biol, Shantou 515063, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zou, DH,Gao, KS. Photosynthetic bicarbonate utilization in Porphyra haitanensis (Bangiales, Rhodophyta)[J]. CHINESE SCIENCE BULLETIN,2002,47(19):1629-1633. |
| APA | Zou, DH,&Gao, KS.(2002).Photosynthetic bicarbonate utilization in Porphyra haitanensis (Bangiales, Rhodophyta).CHINESE SCIENCE BULLETIN,47(19),1629-1633. |
| MLA | Zou, DH,et al."Photosynthetic bicarbonate utilization in Porphyra haitanensis (Bangiales, Rhodophyta)".CHINESE SCIENCE BULLETIN 47.19(2002):1629-1633. |
入库方式： OAI收割
来源：水生生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。