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Evaluating differences in growth, photosynthetic efficiency, and transcriptome of Asterarcys sp. SCS-1881 under autotrophic, mixotrophic, and heterotrophic culturing conditions

文献类型：期刊论文

作者Li, Tao1; Yang, Fangfang1; Xu, Jin2; Wu, Hualian1; Mo, Jiahao1; Dai, Lumei1; Xiang, Wenzhou1
刊名ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
出版日期2020
卷号45页码:11
ISSN号2211-9264
关键词Autotrophy Mixotrophy Asterarcys Photosynthesis Transcriptome
DOI10.1016/j.algal.2019.101753
通讯作者Xiang, Wenzhou(xwz@scsio.ac.cn)
英文摘要Autotrophic microalgae can assimilate organic carbon sources for the growth of heterotrophy and mixotrophy. In particular, the physiological and biochemical response of different microalgae species on autotrophy, heterotrophy, and mixotrophy are quite different. The aim of the present study was to determine differences in growth, biochemical composition, photosynthetic characteristics, and metabolic pathway under autotrophic, heterotrophic and mixotrophic culture conditions in an oleaginous microalga, Asterarcys sp. SCS-1881. The results showed that Asterarcys sp. can use glucose for mixotrophic growth, but cannot under strict heterotrophic growth. Mixotrophic cultures can significantly increase the biomass concentration and cell count of Asterarcys sp. The microalga accumulated more protein under mixotrophic conditions, but more carbohydrates and total lipids under autotrophic conditions. The microalga under mixotrophic culture conditions showed significantly reduced pigment content, PSII activity, and photoprotective ability, but increased the activity of PSI when compared to those under autotrophic conditions. Under mixotrophic conditions, Asterarcys sp. also showed enhanced glycolysis, photosynthetic carbon fixation, and pentose phosphate pathway and thus more ATP, carbon skeleton structure, and NADPH. Additionally, the biosynthesis of triacylglycerol, carbohydrates, and pigments was reduced under mixotrophic conditions and the core protein complexes of PSI and PSII were attenuated. Similarly, photosynthetic electron transport and many other pathways related to protein synthesis were enhanced under mixotrophic conditions when compared to the microalga cultured under autotrophic conditions. These biochemical changes may work to co-operatively ensure a more efficient supply of energy and carbon skeleton for rapid growth of the microalga under mixotrophic conditions when compared to those raised under autotrophic conditions.
WOS关键词CHLORELLA-VULGARIS ; CARBON METABOLISM ; BIODIESEL PRODUCTION ; GENE-EXPRESSION ; CULTIVATION ; MICROALGAE ; GLUCOSE ; LIGHT ; RESPIRATION ; SALINA
资助项目National Natural Science Foundation of China[31602182] ; 13th Five-Year Plan Marine Economy Innovation Development Demonstration Project[BHSFS004] ; Science Foundation of the Chinese Academy of Sciences[2018G0014]
WOS研究方向Biotechnology & Applied Microbiology
语种英语
出版者ELSEVIER
WOS记录号WOS:000507580300013
资助机构National Natural Science Foundation of China ; 13th Five-Year Plan Marine Economy Innovation Development Demonstration Project ; Science Foundation of the Chinese Academy of Sciences
源URL[http://ir.giec.ac.cn/handle/344007/26340]  
专题中国科学院广州能源研究所
通讯作者Xiang, Wenzhou
作者单位1.Chinese Acad Sci, CAS Key Lab Trop Marine Bioresources & Ecol, Guangdong Key Lab Marine Mat Med,South China Sea, Inst South China Sea Ecol & Environm Engn,RNAM Ct, Guangzhou 510301, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Li, Tao,Yang, Fangfang,Xu, Jin,et al. Evaluating differences in growth, photosynthetic efficiency, and transcriptome of Asterarcys sp. SCS-1881 under autotrophic, mixotrophic, and heterotrophic culturing conditions[J]. ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,2020,45:11.
APA Li, Tao.,Yang, Fangfang.,Xu, Jin.,Wu, Hualian.,Mo, Jiahao.,...&Xiang, Wenzhou.(2020).Evaluating differences in growth, photosynthetic efficiency, and transcriptome of Asterarcys sp. SCS-1881 under autotrophic, mixotrophic, and heterotrophic culturing conditions.ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,45,11.
MLA Li, Tao,et al."Evaluating differences in growth, photosynthetic efficiency, and transcriptome of Asterarcys sp. SCS-1881 under autotrophic, mixotrophic, and heterotrophic culturing conditions".ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS 45(2020):11.

入库方式： OAI收割

来源：广州能源研究所

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