Daily timing of emersion and elevated atmospheric CO2 concentration affect photosynthetic performance of the intertidal macroalga Ulva lactuca (Chlorophyta) in sunlight
文献类型：期刊论文
| 作者 | Zou, Dinghui1; Gao, Kunshan1,2; Ruan, Zuoxi1 |
| 刊名 | BOTANICA MARINA
 |
| 出版日期 | 2007 |
| 卷号 | 50期号:5-6页码:275-279 |
| 关键词 | CO2 emersion photosynthesis tidal rhythm Ulva lactuca |
| ISSN号 | 0006-8055 |
| 通讯作者 | Zou, DH, Shantou Univ, Ctr Sci, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China |
| 中文摘要 | The lunar day differs in length from the solar day so that times of low tide vary from day to day. Thus, aerial exposure of intertidal seaweeds may be during the day or during the night. We measured photosynthetic CO, assimilation rates of the intertidal green macroalga Ulva lactuca during exposures of varied daily timings during sunny days of summer to establish how photosynthetic performance responds to emersion timing under varied CO2 levels [at ambient (360 ppmv) and 2x ambient (720 ppmv) atmospheric CO2 concentrations]. There was an increase in net photosynthetic rates following some duration of exposure when the initial timing of exposure occurred during early morning (06.30 h) and late afternoon (17.15 h). In contrast, net rates exhibited a sharp decline with exposure duration when the initial timing of exposure occurred at 09.30 h, 15.30 h and especially at noon (12.30 h), implying the occurrence of a severe photoinhibition resulting from mid-day insolation. Doubled atmospheric CO2 concentration significantly enhanced the emersed photosynthetic rates, indicating that the emersed photosynthesis is CO2-limited at ambient CO2 levels. However, increasing CO2 barely stimulates the emersed photosynthetic rates during mid-day insolation. |
| 英文摘要 | The lunar day differs in length from the solar day so that times of low tide vary from day to day. Thus, aerial exposure of intertidal seaweeds may be during the day or during the night. We measured photosynthetic CO, assimilation rates of the intertidal green macroalga Ulva lactuca during exposures of varied daily timings during sunny days of summer to establish how photosynthetic performance responds to emersion timing under varied CO2 levels [at ambient (360 ppmv) and 2x ambient (720 ppmv) atmospheric CO2 concentrations]. There was an increase in net photosynthetic rates following some duration of exposure when the initial timing of exposure occurred during early morning (06.30 h) and late afternoon (17.15 h). In contrast, net rates exhibited a sharp decline with exposure duration when the initial timing of exposure occurred at 09.30 h, 15.30 h and especially at noon (12.30 h), implying the occurrence of a severe photoinhibition resulting from mid-day insolation. Doubled atmospheric CO2 concentration significantly enhanced the emersed photosynthetic rates, indicating that the emersed photosynthesis is CO2-limited at ambient CO2 levels. However, increasing CO2 barely stimulates the emersed photosynthetic rates during mid-day insolation. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Plant Sciences; Marine & Freshwater Biology |
| 类目[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 研究领域[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 关键词[WOS] | MARINE MACROALGAE ; INORGANIC CARBON ; SOLAR-RADIATION ; FUCUS-SPIRALIS ; PHOTOINHIBITION ; DESICCATION ; PORPHYRA ; WATER ; AIR ; RHODOPHYTA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000253095600003 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8268]  |
| 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, Guangdong, Peoples R China 2.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zou, Dinghui,Gao, Kunshan,Ruan, Zuoxi. Daily timing of emersion and elevated atmospheric CO2 concentration affect photosynthetic performance of the intertidal macroalga Ulva lactuca (Chlorophyta) in sunlight[J]. BOTANICA MARINA,2007,50(5-6):275-279. |
| APA | Zou, Dinghui,Gao, Kunshan,&Ruan, Zuoxi.(2007).Daily timing of emersion and elevated atmospheric CO2 concentration affect photosynthetic performance of the intertidal macroalga Ulva lactuca (Chlorophyta) in sunlight.BOTANICA MARINA,50(5-6),275-279. |
| MLA | Zou, Dinghui,et al."Daily timing of emersion and elevated atmospheric CO2 concentration affect photosynthetic performance of the intertidal macroalga Ulva lactuca (Chlorophyta) in sunlight".BOTANICA MARINA 50.5-6(2007):275-279. |
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。