Metabolic and Proteomic Analysis of Chlorella sorokiniana, Chloroidium saccharofilum, and Chlorella vulgaris Cells Cultured in Autotrophic, Photoheterotrophic, and Mixotrophic Cultivation Modes

被引:15
|
作者
Piasecka, Agata [1 ]
Baier, Andrea [2 ]
机构
[1] Polish Acad Sci, Inst Agrophys, Dept Phys Properties Plant Mat, Doswiadczalna 4, PL-20290 Lublin, Poland
[2] John Paul II Catholic Univ Lublin, Dept Anim Physiol & Toxicol, Konstantynow 1, PL-20708 Lublin, Poland
来源
MOLECULES | 2022年 / 27卷 / 15期
关键词
proteins; microalgae; Chlorella; proteomics; gel electrophoresis; mixotrophy; beet molasses; PROTEINS; GROWTH; PROTOTHECOIDES; ACCUMULATION; CHLOROPHYTA; STRESS; WASTE; RICH;
D O I
10.3390/molecules27154817
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Chlorella is one of the most well-known microalgal genera, currently comprising approximately a hundred species of single-celled green algae according to the AlgaeBase. Strains of the genus Chlorella have the ability to metabolize both inorganic and organic carbon sources in various trophic modes and synthesize valuable metabolites that are widely used in many industries. The aim of this work was to investigate the impact of three trophic modes on the growth parameters, productivities of individual cell components, and biochemical composition of Chlorella sorokiniana, Chloroidium saccharofilum, and Chlorella vulgaris cells with special consideration of protein profiles detected by SDS-PAGE gel electrophoresis and two-dimensional gel electrophoresis with MALDI-TOF/TOF MS. Mixotrophic conditions with the use of an agro-industrial by-product stimulated the growth of all Chlorella species, which was confirmed by the highest specific growth rates and the shortest biomass doubling times. The mixotrophic cultivation of all Chlorella species yielded a high amount of protein-rich biomass with reduced contents of chlorophyll a, chlorophyll b, carotenoids, and carbohydrates. Additionally, this work provides the first information about the proteome of Chloroidium saccharofilum, Chlorella sorokiniana, and Chlorella vulgaris cells cultured in molasses supplementation conditions. The proteomic analysis of the three Chlorella species growing photoheterotrophically and mixotrophically showed increased accumulation of proteins involved in the cell energy metabolism and carbon uptake, photosynthesis process, and protein synthesis, as well as proteins involved in intracellular movements and chaperone proteins.
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页数:16
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