Differential physiological responses of the coastal cyanobacterium Synechococcus sp PCC7002 to elevated pCO(2) at lag, exponential, and stationary growth phases

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	Differential physiological responses of the coastal cyanobacterium Synechococcus sp PCC7002 to elevated pCO(2) at lag, exponential, and stationary growth phases
	Li, Hongmei ; Mou, Shanli ; Li, Gang 2; Li, Fazhong 3; Shao, Zhisheng 3; Li, Jinsong 3; Qu, Changfeng 4; Zhang, Yongyu
刊名	SCIENCE CHINA-EARTH SCIENCES
	2018
卷号	61 期号:10 页码:1397
关键词	Elevated pCO(2) Lag Exponential and stationary phases Photosynthetic performance Synechococcus
ISSN号	1674-7313
英文摘要	We studied the effects of expected end-of-the-century pCO(2) (1000 ppm) on the photosynthetic performance of a coastal marine cyanobacterium Synechococcus sp. PCC7002 during the lag, exponential, and stationary growth phases. Elevated pCO(2) significantly stimulated growth, and enhanced the maximum cell density during the stationary phase. Under ambient pCO(2) conditions, the lag phase lasted for 6 days, while elevated pCO(2) shortened the lag phase to two days and extended the exponential phase by four days. The elevated pCO(2) increased photosynthesis levels during the lag and exponential phases, but reduced them during the stationary phase. Moreover, the elevated pCO(2) reduced the saturated growth light (Ik) and increased the light utilization efficiency (alpha) during the exponential and stationary phases, and elevated the phycobilisome: chlorophyll a (Chl a) ratio. Furthermore, the elevated pCO(2) reduced the particulate organic carbon (POC):Chl a and particulate organic nitrogen (PON):Chl a ratios during the lag and stationary phases, but enhanced them during the exponential phase. Overall, Synechococcus showed differential physiological responses to elevated pCO(2) during different growth phases, thus providing insight into previous studies that focused on only the exponential phase, which may have biased the results relative to the effects of elevated pCO(2) in ecology or aquaculture.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/17627]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
作者单位	1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Bioact Subst, Qingdao 266061, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Shandong Prov Key Lab Energy Genet, Key Lab Biofuels, Qingdao 266101, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China 4.China Natl Offshore Oil Corp Ltd, Zhanjiang Branch, Zhanjiang 524000, Peoples R China
推荐引用方式 GB/T 7714	Li, Hongmei,Mou, Shanli,Li, Gang,et al. Differential physiological responses of the coastal cyanobacterium Synechococcus sp PCC7002 to elevated pCO(2) at lag, exponential, and stationary growth phases[J]. SCIENCE CHINA-EARTH SCIENCES,2018,61(10):1397, 1405.
APA	Li, Hongmei.,Mou, Shanli.,Li, Gang.,Li, Fazhong.,Shao, Zhisheng.,...&Zhang, Yongyu.(2018).Differential physiological responses of the coastal cyanobacterium Synechococcus sp PCC7002 to elevated pCO(2) at lag, exponential, and stationary growth phases.SCIENCE CHINA-EARTH SCIENCES,61(10),1397.
MLA	Li, Hongmei,et al."Differential physiological responses of the coastal cyanobacterium Synechococcus sp PCC7002 to elevated pCO(2) at lag, exponential, and stationary growth phases".SCIENCE CHINA-EARTH SCIENCES 61.10(2018):1397.