An inducible CO2 concentrating mechanism in cyanobacterium Anabaena sp. strain PCC7120

Tianfu Wu, Lirong Song, Yongding Liu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In 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.

Original languageEnglish (US)
Pages (from-to)2177-2181
Number of pages5
JournalChinese Science Bulletin
Volume44
Issue number23
DOIs
StatePublished - 1999

Fingerprint

Anabaena
concentrating
Cyanobacteria
carbon dioxide
cells
carbon
air
carbonate dehydratase

Keywords

  • Carboxysome
  • CCM
  • HCG
  • Photosynthetic affinity

ASJC Scopus subject areas

  • General

Cite this

An inducible CO2 concentrating mechanism in cyanobacterium Anabaena sp. strain PCC7120. / Wu, Tianfu; Song, Lirong; Liu, Yongding.

In: Chinese Science Bulletin, Vol. 44, No. 23, 1999, p. 2177-2181.

Research output: Contribution to journalArticle

Wu, Tianfu ; Song, Lirong ; Liu, Yongding. / An inducible CO2 concentrating mechanism in cyanobacterium Anabaena sp. strain PCC7120. In: Chinese Science Bulletin. 1999 ; Vol. 44, No. 23. pp. 2177-2181.
@article{1dadd24806d34f1c912887ea22f486d3,
title = "An inducible CO2 concentrating mechanism in cyanobacterium Anabaena sp. strain PCC7120",
abstract = "In 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.",
keywords = "Carboxysome, CCM, HCG, Photosynthetic affinity",
author = "Tianfu Wu and Lirong Song and Yongding Liu",
year = "1999",
doi = "10.1007/BF03182704",
language = "English (US)",
volume = "44",
pages = "2177--2181",
journal = "Science Bulletin",
issn = "2095-9273",
publisher = "Springer Science + Business Media",
number = "23",

}

TY - JOUR

T1 - An inducible CO2 concentrating mechanism in cyanobacterium Anabaena sp. strain PCC7120

AU - Wu, Tianfu

AU - Song, Lirong

AU - Liu, Yongding

PY - 1999

Y1 - 1999

N2 - In 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.

AB - In 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.

KW - Carboxysome

KW - CCM

KW - HCG

KW - Photosynthetic affinity

UR - http://www.scopus.com/inward/record.url?scp=0041338831&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0041338831&partnerID=8YFLogxK

U2 - 10.1007/BF03182704

DO - 10.1007/BF03182704

M3 - Article

AN - SCOPUS:0041338831

VL - 44

SP - 2177

EP - 2181

JO - Science Bulletin

JF - Science Bulletin

SN - 2095-9273

IS - 23

ER -