Photosynthetic responses to inorganic carbon in Ulva lactuca under aquatic and aerial states

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	Photosynthetic responses to inorganic carbon in Ulva lactuca under aquatic and aerial states
	Zou, DH ; Gao, KS
刊名	ACTA BOTANICA SINICA
	2002-11-01
卷号	44 期号:11 页码:1291-1296
关键词	Ulva lactuca photosynthesis inorganic carbon aquatic aerial atmospheric CO2 rise
ISSN号	0577-7496
通讯作者	Gao, KS, Shantou Univ, Ctr Sci, Inst Marine Biol, Shantou 515063, Peoples R China
中文摘要	Intertidal macroalgae experience continual alternation of photosynthesis between aquatic state at high tide and aerial state at low tide. The comparative photosynthetic responses to inorganic carbon were investigated in the common intertidal macroalga Ulva lactuca L. along the coast of Shantou between aquatic and aerial state. The inorganic carbon dissolved in seawater at present could fully (at 10 degreesC or 20 degreesC) or nearly (at 30 degreesC) saturate the aquatic photosynthesis of U. lactuca. However, the aerial photosynthesis was limited by current ambient atmospheric CO2 level, and such a limitation was more severe at higher temperature (20degrees - 30degrees T) than at lower temperature (10 T). The carbon-saturated maximal photosynthesis of U. lactuca under aerial state was much greater than that under aquatic state at 10 degreesC and 20 degreesC, while the maximal photosynthesis under both states was similar at 30 degreesC. The aerial values of K-m (CO2) for photosynthesis were higher than the aquatic values. On the contrary, the values of apparent photosynthetic CO2 conductance under aerial state were considerably lower than that under aquatic state. It was concluded that the increase of atmospheric CO2 would enhance the primary productivity of U. lactuca through stimulating the photosynthesis under aerial state during low tide.
英文摘要	Intertidal macroalgae experience continual alternation of photosynthesis between aquatic state at high tide and aerial state at low tide. The comparative photosynthetic responses to inorganic carbon were investigated in the common intertidal macroalga Ulva lactuca L. along the coast of Shantou between aquatic and aerial state. The inorganic carbon dissolved in seawater at present could fully (at 10 degreesC or 20 degreesC) or nearly (at 30 degreesC) saturate the aquatic photosynthesis of U. lactuca. However, the aerial photosynthesis was limited by current ambient atmospheric CO2 level, and such a limitation was more severe at higher temperature (20degrees - 30degrees T) than at lower temperature (10 T). The carbon-saturated maximal photosynthesis of U. lactuca under aerial state was much greater than that under aquatic state at 10 degreesC and 20 degreesC, while the maximal photosynthesis under both states was similar at 30 degreesC. The aerial values of K-m (CO2) for photosynthesis were higher than the aquatic values. On the contrary, the values of apparent photosynthetic CO2 conductance under aerial state were considerably lower than that under aquatic state. It was concluded that the increase of atmospheric CO2 would enhance the primary productivity of U. lactuca through stimulating the photosynthesis under aerial state during low tide.
学科主题	Biochemistry & Molecular Biology; Plant Sciences
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Biochemistry & Molecular Biology ; Plant Sciences
研究领域[WOS]	Biochemistry & Molecular Biology ; Plant Sciences
关键词[WOS]	GRACILARIA SP ; CO2 ; MACROALGAE ; PLANTS ; GROWTH ; PERFORMANCE ; RHODOPHYTA ; ALGAE
收录类别	SCI
语种	英语
WOS记录号	WOS:000179410400005
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/9768]
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 responses to inorganic carbon in Ulva lactuca under aquatic and aerial states[J]. ACTA BOTANICA SINICA,2002,44(11):1291-1296.
APA	Zou, DH,&Gao, KS.(2002).Photosynthetic responses to inorganic carbon in Ulva lactuca under aquatic and aerial states.ACTA BOTANICA SINICA,44(11),1291-1296.
MLA	Zou, DH,et al."Photosynthetic responses to inorganic carbon in Ulva lactuca under aquatic and aerial states".ACTA BOTANICA SINICA 44.11(2002):1291-1296.