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An inducible CO2 concentrating mechanism in cyanobacterium Anabaena sp strain PCC7120
WU Tianfu; SONG Lirong; LIU Yongding; Liu, YD, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
1999
Source PublicationCHINESE SCIENCE BULLETIN
Volume44Issue:23Pages:2177-2181
AbstractIn order to define its characteristics of the photosynthetic utilization of CO2 and HCO3- when the ambient inorganic carbon changed, HCG (High-CO2-Growing Cells) of cyanobacterium Anabaena sp. strain PCC7120 were prepared. The growth rate of HCG was higher than that of LCG (low-CO2-growing cells, i.e. air-growing cells). When the HCG cells were transferred from 5% CO2 to air levels of CO2 , a series of changes took place: its carbonic anhydrase activity as well as its photosynthetic affinity to the external inorganic carbon significantly increased; the number of the carboxysomes, which is one of the most important components of CCM in cyanobacteria also increased. These facts indicated that the CCM activity of Anabaena PCC 7120 was induced. When the pH in the medium increased from 6 to 9, the photosynthetic affinity to external inorganic carbon of both HCG and LCG declined, while the apparent photosynthetic affinity to external CO2 increased. In the light of these findings, this inducible CCM in cyanobacteria provided a good model for the study of the photosynthetic Ci utilization in the phototrophic microoganisms.
KeywordHcg Ccm Photosynthetic Affinity Carboxysome
DepartmentChinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Subject AreaMultidisciplinary Sciences
Indexed BySCI
WOS IDWOS:000085007300014
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/10156
Collection期刊论文
Corresponding AuthorLiu, YD, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
WU Tianfu,SONG Lirong,LIU Yongding,et al. An inducible CO2 concentrating mechanism in cyanobacterium Anabaena sp strain PCC7120[J]. CHINESE SCIENCE BULLETIN,1999,44(23):2177-2181.
APA WU Tianfu,SONG Lirong,LIU Yongding,&Liu, YD, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(1999).An inducible CO2 concentrating mechanism in cyanobacterium Anabaena sp strain PCC7120.CHINESE SCIENCE BULLETIN,44(23),2177-2181.
MLA WU Tianfu,et al."An inducible CO2 concentrating mechanism in cyanobacterium Anabaena sp strain PCC7120".CHINESE SCIENCE BULLETIN 44.23(1999):2177-2181.
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