Improving photosynthesis of microalgae by changing the ratio of light-harvesting pigments

作     者：WANG Gaohong1, CHEN Lanzhou2, LI Genbao1, LI Dunhai1, HU Chunxiang1, CHEN Haofeng1, LIU Yongding1 & SONG Lirong1 1. State Key Laboratory of Fresh Water Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China 2. School of Resource and Environment Sciences, Wuhan University, Wuhan 430072, China 

出 版 物：《Science Bulletin》 (科学通报(英文版))

年 卷 期：2005年第15期

页      面：88-92页

学科分类：09[农学] 0903[农学-农业资源与环境] 090302[农学-植物营养学] 

主　　题：photosynthesis microalgae light-harvesting pigments fluorescence emission electron transport rate. 

摘      要：Changing the ratio of light-harvesting pigments was regarded as an efficient way to improve the photosyn-thesis rate in microalgae, but the underlying mechanism is still unclear. In the present study, a mutant of Anabeana simensis (called SP) was selected from retrieved satellite cul-tures. Several parameters related with photosynthesis, such as the growth, photosynthesis rate, the content of photosyn-thetic pigment, low temperature fluorescence spectrum (77K) and electron transport rate, were compared with those of the wild type. It was found that the change in the ratio of light-harvesting pigments in the mutant led to more efficient light energy transfer and usage in mutant than in the wild type. This may be the reason why the mutant had higher photosynthesis and growth rates.