SHORT-TERM EFFECTS OF ACETATE AND MICROAEROBIC CONDITIONS ON PHOTOSYNTHESIS AND RESPIRATION IN CHLORELLA SOROKINIANA GXNN 01 (CHLOROPHYTA)

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	SHORT-TERM EFFECTS OF ACETATE AND MICROAEROBIC CONDITIONS ON PHOTOSYNTHESIS AND RESPIRATION IN CHLORELLA SOROKINIANA GXNN 01 (CHLOROPHYTA)
	Qiao, Hongjin 1,3; Wang, Guangce 1,2; Liu, Kai 2; Gu, Wenhui 1
刊名	JOURNAL OF PHYCOLOGY
	2012-08-01
卷号	48 期号:4 页码:992-1001
关键词	acetate Chlorella microaerobic photosynthesis respiration
ISSN号	0022-3646
通讯作者	Wang, GC (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China.
英文摘要	The culture of microalgae using organic carbon sources decreases the cost of operation in closed systems. The effect of carbon sources on microalgae is thus an interesting problem in not only theoretical research but also practical production. The short-term effects of acetate and microaerobic conditions on the growth, photosynthesis, and respiration of the green microalga Chlorella sorokiniana I. Shihira & R.W. Krauss GXNN 01 were described after acetate addition to autotrophic cultures. As the acetate concentration increased, cells needed a longer lag phase to grow, and 243.8 mM acetate completely inhibited growth. Acetate addition induced an immediate response in photosynthesis and respiration. The activity of PS II and PS I were impaired and declined with different rates, and then recovered compared with autotrophic cells. Carbonic anhydrase and Rubisco activities were also inhibited at the beginning, and respiration was increased. We propose that ATP consumption for acetate assimilation results in surplus NADPH, and then accumulated reducing power over-reduces inter-photosystem components and raises the transthylakoid proton gradient, which redistributes energy between PS I and PS II, and leads to a decrease in the PS II/PS I ratio and O2 evolution. An apparent cyclic electron flow was also observed, which may be mainly mediated by NAD(P)H dehydrogenase-dependent pathway since NADPH was in excess. These observations pointed to an acclimation process after acetate addition, and suggested the interaction between photosynthesis and respiration involving ATP and reducing power.
学科主题	Plant Sciences ; Marine & Freshwater Biology
收录类别	SCI
原文出处	10.1111/j.1529-8817.2012.01189.x
语种	英语
WOS记录号	WOS:000307016700016
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/12382]
专题	海洋研究所_实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Tianjin Univ Sci Technol, Coll Marine Sci & Engn, Tianjin 300222, Peoples R China 3.Shandong Marine Fisheries Res Inst, Shandong Prov Key Lab Restorat Marine Ecol, Yantai 264006, Peoples R China
推荐引用方式 GB/T 7714	Qiao, Hongjin,Wang, Guangce,Liu, Kai,et al. SHORT-TERM EFFECTS OF ACETATE AND MICROAEROBIC CONDITIONS ON PHOTOSYNTHESIS AND RESPIRATION IN CHLORELLA SOROKINIANA GXNN 01 (CHLOROPHYTA)[J]. JOURNAL OF PHYCOLOGY,2012,48(4):992-1001.
APA	Qiao, Hongjin,Wang, Guangce,Liu, Kai,&Gu, Wenhui.(2012).SHORT-TERM EFFECTS OF ACETATE AND MICROAEROBIC CONDITIONS ON PHOTOSYNTHESIS AND RESPIRATION IN CHLORELLA SOROKINIANA GXNN 01 (CHLOROPHYTA).JOURNAL OF PHYCOLOGY,48(4),992-1001.
MLA	Qiao, Hongjin,et al."SHORT-TERM EFFECTS OF ACETATE AND MICROAEROBIC CONDITIONS ON PHOTOSYNTHESIS AND RESPIRATION IN CHLORELLA SOROKINIANA GXNN 01 (CHLOROPHYTA)".JOURNAL OF PHYCOLOGY 48.4(2012):992-1001.