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学科主题: Plant Sciences
题名: Characterization of diurnal photosynthetic rhythms in the marine diatom Skeletonema costatum grown in synchronous culture under ambient and elevated CO2
作者: Chen, XW; Gao, KS
通讯作者: Chen, XW, Hubei Normal Univ, Dept Biol, Huangshi, Hubei, Peoples R China
关键词: apparent carboxylating efficiency ; efficiency of the light reaction ; photochemical efficiency of PSII ; photosynthetic capacity ; photosynthetic CO2 affinity
刊名: FUNCTIONAL PLANT BIOLOGY
发表日期: 2004
DOI: 10.1071/FP03240
卷: 31, 期:4, 页:399-404
收录类别: SCI
文章类型: Article
部门归属: Hubei Normal Univ, Dept Biol, Huangshi, Hubei, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China; Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Plant Sciences
研究领域[WOS]: Plant Sciences
摘要: Photosynthetic performance was examined in Skeletonema costatum (Greville) Cleve. under 12: 12-h light: dark (LD) cycle at ambient CO2 (350 muL L-1) and elevated CO2 (1000 muL L-1). At ambient CO2, the cellular chlorophyll a content, the light-saturated photosynthetic rate (P-m), the initial slope of the light saturation curves ( a), the photochemical efficiency of PSII (F-v/F-m), the apparent carboxylating efficiency (ACE) and the photosynthetic affinity for CO2 [1/K-m (CO2)] all showed rhythmical changes with different amplitudes during the light period. The P-m had similar changing pattern in the light period with the ACE and 1/K-m (CO2) rather than with the alpha and F-v/F-m, indicating that rhythmical changes of photosynthetic capacity may be mainly controlled by the activity of C- reduction associated with CO2 uptake during the light period. The CO2 enrichment reduced the ACE and the affinity to CO2, and increased the a, cellular chlorophyll a content and P m based on cell number. By contrast, the changing patterns of all photosynthetic parameters examined here during the light period had almost the same for cells grown at ambient CO2 and elevated CO2, suggesting that the photosynthetic rhythms of S. costatum are not affected by CO2 enrichment.
英文摘要: Photosynthetic performance was examined in Skeletonema costatum (Greville) Cleve. under 12: 12-h light: dark (LD) cycle at ambient CO2 (350 muL L-1) and elevated CO2 (1000 muL L-1). At ambient CO2, the cellular chlorophyll a content, the light-saturated photosynthetic rate (P-m), the initial slope of the light saturation curves ( a), the photochemical efficiency of PSII (F-v/F-m), the apparent carboxylating efficiency (ACE) and the photosynthetic affinity for CO2 [1/K-m (CO2)] all showed rhythmical changes with different amplitudes during the light period. The P-m had similar changing pattern in the light period with the ACE and 1/K-m (CO2) rather than with the alpha and F-v/F-m, indicating that rhythmical changes of photosynthetic capacity may be mainly controlled by the activity of C- reduction associated with CO2 uptake during the light period. The CO2 enrichment reduced the ACE and the affinity to CO2, and increased the a, cellular chlorophyll a content and P m based on cell number. By contrast, the changing patterns of all photosynthetic parameters examined here during the light period had almost the same for cells grown at ambient CO2 and elevated CO2, suggesting that the photosynthetic rhythms of S. costatum are not affected by CO2 enrichment.
关键词[WOS]: INORGANIC CARBON ACQUISITION ; CELL-CYCLE ; THALASSIOSIRA-WEISSFLOGII ; PROTEIN-PHOSPHORYLATION ; EUKARYOTIC MICROALGAE ; EUGLENA-GRACILIS ; ATMOSPHERIC CO2 ; DIEL VARIATIONS ; HCO3-UPTAKE ; LIFE-CYCLE
语种: 英语
WOS记录号: WOS:000221249800010
ISSN号: 1445-4408
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9494
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Hubei Normal Univ, Dept Biol, Huangshi, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
3.Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China

Recommended Citation:
CHEN Xiongwen & GAO Kunshan.Characterization of diurnal photosynthetic rhythms in the marine diatom Skeletonema costatum grown in synchronous culture under ambient and elevated CO2,FUNCTIONAL PLANT BIOLOGY,2004,31(4):399-404
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