Interactions between organic and inorganic carbon sources during mixotrophic cultivation of Synechococcus sp.
Glucose at 3 g l(-1) markedly accelerated growth of Synechococcus sp. PCC 7002. The net photosynthesis rate was 263 micromol O2 (mg Chl a h)(-1) for mixotrophic culture and 146 micromol O2 (mg Chl a h)(-1) for photoautotrophic culture. Additing 1 g NaHCO3 l(-1) to the glucose-supplemented culture enhanced the photosynthetic rate by 18%, and the total carbon consumption rate was raised to 2.5 mg l(-1) (mg chl a h)(-1) from a previously negative value. An interaction between organic and inorganic carbon metabolism was established.
Kang
Ruijuan
R
State Key Laboratory of Biochemical Engineering, Institute Process Engineering, Chinese Academy of Sciences, Beijing 100080, PR China. rjkang@home.ipe.ac.cn
Wang
Jing
J
Shi
Dingji
D
Cong
Wei
W
Cai
Zhaoling
Z
Ouyang
Fan
F
D017554:Carbon Compounds, Inorganic / Q000378:metabolism*; D049109:Cell Proliferation / Q000528:radiation effects; D005947:Glucose / Q000378:metabolism*; D008027:Light; D009930:Organic Chemicals / Q000378:metabolism*; D010101:Oxygen Consumption / Q000187:drug effects / Q000502:physiology; D010788:Photosynthesis / Q000502:physiology* / Q000528:radiation effects*; D046940:Synechococcus / Q000502:physiology* / Q000528:radiation effects*
D017554:Carbon Compounds, Inorganic; D009930:Organic Chemicals; D005947:Glucose