Characterization of diurnal photosynthetic rhythms in the marine diatom Skeletonema costatum grown in synchronous culture under ambient and elevated CO2

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	Characterization of diurnal photosynthetic rhythms in the marine diatom Skeletonema costatum grown in synchronous culture under ambient and elevated CO2
	Chen, XW ; Gao, KS
刊名	FUNCTIONAL PLANT BIOLOGY
	2004
卷号	31 期号:4 页码:399-404
关键词	apparent carboxylating efficiency efficiency of the light reaction photochemical efficiency of PSII photosynthetic capacity photosynthetic CO2 affinity
ISSN号	1445-4408
通讯作者	Chen, XW, Hubei Normal Univ, Dept Biol, Huangshi, Hubei, Peoples R China
中文摘要	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.
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.
学科主题	Plant Sciences
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Plant Sciences
研究领域[WOS]	Plant Sciences
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000221249800010
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/9494]
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.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
推荐引用方式 GB/T 7714	Chen, XW,Gao, KS. Characterization of diurnal photosynthetic rhythms in the marine diatom Skeletonema costatum grown in synchronous culture under ambient and elevated CO2[J]. FUNCTIONAL PLANT BIOLOGY,2004,31(4):399-404.
APA	Chen, XW,&Gao, KS.(2004).Characterization of diurnal photosynthetic rhythms in the marine diatom Skeletonema costatum grown in synchronous culture under ambient and elevated CO2.FUNCTIONAL PLANT BIOLOGY,31(4),399-404.
MLA	Chen, XW,et al."Characterization of diurnal photosynthetic rhythms in the marine diatom Skeletonema costatum grown in synchronous culture under ambient and elevated CO2".FUNCTIONAL PLANT BIOLOGY 31.4(2004):399-404.