Exogenous carbon acquisition of photosynthesis in Porphyra haitanensis (Bangiales, Rhodophyta) under emersed state

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	Exogenous carbon acquisition of photosynthesis in Porphyra haitanensis (Bangiales, Rhodophyta) under emersed state
	Zou, DH ; Gao, KS
刊名	PROGRESS IN NATURAL SCIENCE
	2004-02-01
卷号	14 期号:2 页码:138-144
关键词	Porphyra haitanensis carbon dioxide photosynthesis emersion carbonic anhydrase
ISSN号	1002-0071
通讯作者	Zou, DH, Shantou Univ, Inst Marine Biol, Guangdong 515063, Peoples R China
中文摘要	The photosynthetic performances of Porphyra haitanensis thalli were investigated in order to understand its mechanisms for exogenous carbon acquisition during emersion at low tide. The emersed photosynthesis was studied by altering the pH value in the water film on the thalli surface, treating them with carbonic anhydarase inhibitors (acetazolamide and 6-ethoxyzolamide), adjusting the CO2 concentrations in the air, and comparing the theoretical maximum CO2 supply rates within the adherent water film with the observed photosynthetic CO2 uptake rates. It was found that the principal exogenous inorganic carbon source for the photosynthesis of P. haitanensis during emersion was atmospheric CO2. The driving force of CO2 flux across the water film was the CO2 concentration gradient within it. Carbonic anhydrase accelerated both extracellular and intracellular CO2 transport. The emersed photosynthesis of P. haitanensis was limited by the present atmospheric CO2 level, and would be enhanced by atmospheric CO2 rise that would trigger global warming.
英文摘要	The photosynthetic performances of Porphyra haitanensis thalli were investigated in order to understand its mechanisms for exogenous carbon acquisition during emersion at low tide. The emersed photosynthesis was studied by altering the pH value in the water film on the thalli surface, treating them with carbonic anhydarase inhibitors (acetazolamide and 6-ethoxyzolamide), adjusting the CO2 concentrations in the air, and comparing the theoretical maximum CO2 supply rates within the adherent water film with the observed photosynthetic CO2 uptake rates. It was found that the principal exogenous inorganic carbon source for the photosynthesis of P. haitanensis during emersion was atmospheric CO2. The driving force of CO2 flux across the water film was the CO2 concentration gradient within it. Carbonic anhydrase accelerated both extracellular and intracellular CO2 transport. The emersed photosynthesis of P. haitanensis was limited by the present atmospheric CO2 level, and would be enhanced by atmospheric CO2 rise that would trigger global warming.
学科主题	Multidisciplinary Sciences
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Multidisciplinary ; Multidisciplinary Sciences
研究领域[WOS]	Materials Science ; Science & Technology - Other Topics
关键词[WOS]	BICARBONATE UTILIZATION ; MARINE MACROALGAE ; CO2 ; CHLOROPHYTA ; ANHYDRASE ; WATER ; PLANT
收录类别	SCI
语种	英语
WOS记录号	WOS:000188789400007
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/9566]
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, Inst Marine Biol, Guangdong 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. Exogenous carbon acquisition of photosynthesis in Porphyra haitanensis (Bangiales, Rhodophyta) under emersed state[J]. PROGRESS IN NATURAL SCIENCE,2004,14(2):138-144.
APA	Zou, DH,&Gao, KS.(2004).Exogenous carbon acquisition of photosynthesis in Porphyra haitanensis (Bangiales, Rhodophyta) under emersed state.PROGRESS IN NATURAL SCIENCE,14(2),138-144.
MLA	Zou, DH,et al."Exogenous carbon acquisition of photosynthesis in Porphyra haitanensis (Bangiales, Rhodophyta) under emersed state".PROGRESS IN NATURAL SCIENCE 14.2(2004):138-144.