Phosphate assimilation by Chlorella and adjustment of phosphate concentration in basal medium for its cultivation.
Assimilation of phosphate by Chlorella pyrenoidosa was 0.81-8.1 mg PO(4)-P/g dry weight for heterotrophic cultures and 0.81-16.1 mg/g for mixotrophic cultures. Optimal carbon:phosphorous (C/P) ratios were 206:1-2060:1 and 103:1-2060:1 for heterotrophic and mixotrophic cultivations, respectively. These requirements for phosphate for growth of C. pyrenoidosa under either heterotrophic or mixotrophic conditions are much less (6.25-62.5 or 3.12-62.5-fold at 10 g glucose/l) than its concentration in basal medium.
Department of Food Science, Shanghai Jiao Tong University, Shanghai 200240, Peoples' Republic of China.
Chun-Bo
CB
Qu
Zheng-Yun
ZY
Wu
Xian-Ming
XM
Shi
D002244:Carbon / Q000378:metabolism; D002708:Chlorella / Q000378:metabolism*; D003470:Culture Media; D010710:Phosphates / Q000378:metabolism*
D003470:Culture Media; D010710:Phosphates; D002244:Carbon