%0 Journal Article
%T Carbon metabolism and energetic utilization of Synechococcus sp. PCC7942 under mixotrophic condition<br>聚球藻7942混养培养中碳代谢与能量利用
%A Riming Yan
%A Zhibin Zhang
%A Qinggui Zeng
%A Du Zhu
%A Ju Chu
%A <br>颜日明
%A 张志斌
%A 曾庆桂
%A 朱笃
%A 储炬
%J 生物工程学报
%D 2010
%I 
%X To investigate the energy utilization efficiency of Synechococcus sp. PCC7942 under mixotrophic conditions, we studied its growth characteristics in mixotrophic cultures with glucose and acetic acid respectively and discussed the carbon metabolism and energy utilization based on metabolic flux analysis. Results showed that both glucose and acetate could better enhance the growth of Synechococcus sp. PCC7942, and the latter was more effective. The metabolic flux through glycolytic pathway in mixotrophic cultures was stimulated by glucose whereas depressed by acetate, while the flux through the tricarboxylic acid cycle increased in both cases. Under mixotrophic conditions, glucose makes more significant impact on the diminishment of photochemical efficiency of Synechococcus sp. PCC7942. Although the contribution of light energy was smaller, the cell yields based on total energy in mixotrophic cultures were higher comparing with photoautotrophic culture. The energy conversion efficiencies based on ATP synthesis in photoautotrophic culture, mixotrophic cultures with glucose and with acetate were evaluated to be 6.81%, 7.43% and 8.77%, respectively.
%K Synechococcus sp
%K PCC7942
%K mixotrophic cultivation
%K metabolic flux analysis
%K carbon metabolism
%K energetic utilization<br>聚球藻7942，混养培养，代谢通量分析，碳代谢，能量利用
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A66E90C274451689E69F6F0291467824&aid=77C06F09226C32147E96D8FA9662CCCA&yid=140ECF96957D60B2&vid=96C778EE049EE47D&iid=9CF7A0430CBB2DFD&sid=1C7C31A28F5ECC6F&eid=ED8B09838922B3F8&journal_id=1000-3061&journal_name=生物工程学报&referenced_num=0&reference_num=0