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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 Xiongwen & GAO Kunshan; Chen, XW, Hubei Normal Univ, Dept Biol, Huangshi, Hubei, Peoples R China
2004
Source PublicationFUNCTIONAL PLANT BIOLOGY
Volume31Issue:4Pages:399-404
AbstractPhotosynthetic 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.
KeywordApparent Carboxylating Efficiency Efficiency Of The Light Reaction Photochemical Efficiency Of Psii Photosynthetic Capacity Photosynthetic Co2 Affinity
DepartmentHubei 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
Subject AreaPlant Sciences
Indexed BySCI
WOS IDWOS:000221249800010
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Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9494
Collection期刊论文
Corresponding AuthorChen, XW, Hubei Normal Univ, Dept Biol, Huangshi, Hubei, Peoples R China
Recommended Citation
GB/T 7714
CHEN Xiongwen & GAO Kunshan,Chen, XW, Hubei Normal Univ, Dept Biol, Huangshi, Hubei, Peoples R China. 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 Xiongwen & GAO Kunshan,&Chen, XW, Hubei Normal Univ, Dept Biol, Huangshi, Hubei, Peoples R China.(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 Xiongwen & GAO Kunshan,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.
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