The Dynamics of the Bacterial Community of the Photobioreactor-Cultivated Green Microalga <i>Haematococcus lacustris</i> during Stress-Induced Astaxanthin Accumulation
<i>Haematococcus lacustris</i> is a natural source of a valuable ketocarotenoid astaxanthin. Under autotrophic growth conditions, it exists in the form of a community with bacteria. The close coexistence of these microorganisms raises two questions: how broad their diversity is and how t...
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MDPI AG
2021-02-01
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| Series: | Biology |
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| Online Access: | https://www.mdpi.com/2079-7737/10/2/115 |
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| author | Konstantin Chekanov Anna Zaytseva Ilgar Mamedov Alexei Solovchenko Elena Lobakova |
| author_facet | Konstantin Chekanov Anna Zaytseva Ilgar Mamedov Alexei Solovchenko Elena Lobakova |
| author_sort | Konstantin Chekanov |
| collection | DOAJ |
| description | <i>Haematococcus lacustris</i> is a natural source of a valuable ketocarotenoid astaxanthin. Under autotrophic growth conditions, it exists in the form of a community with bacteria. The close coexistence of these microorganisms raises two questions: how broad their diversity is and how they interact with the microalga. Despite the importance these issues, little is known about microorganisms existing in <i>Haematococcus</i> cultures. For the first time, we characterize the dynamic of the <i>H. lacustris</i> microbiome of the microbiome of <i>Haematococcus</i> (a changeover of the bacterial associated species as function of the time) cultivated autotrophically in a photobioreactor based on 16S rRNA metabarcoding data. We found that Proteobacteria and Bacteroidetes are predominant phyla in the community. The Caulobacter bacterium became abundant during astaxanthin accumulation. These data were supported by microscopy. We discuss possible roles and interactions of the community members. These findings are of potential significance for biotechnology. They provide an insight into possible bacterial contamination in algal biomass and reveal the presence of bacteria essential for the algal growth. |
| first_indexed | 2024-03-09T05:40:29Z |
| format | Article |
| id | doaj.art-b3cc7b2029b04f549ea4d490d752102a |
| institution | Directory Open Access Journal |
| issn | 2079-7737 |
| language | English |
| last_indexed | 2024-03-09T05:40:29Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biology |
| spelling | doaj.art-b3cc7b2029b04f549ea4d490d752102a2023-12-03T12:25:28ZengMDPI AGBiology2079-77372021-02-0110211510.3390/biology10020115The Dynamics of the Bacterial Community of the Photobioreactor-Cultivated Green Microalga <i>Haematococcus lacustris</i> during Stress-Induced Astaxanthin AccumulationKonstantin Chekanov0Anna Zaytseva1Ilgar Mamedov2Alexei Solovchenko3Elena Lobakova4Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, 119192 Moscow, RussiaFaculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, 119192 Moscow, RussiaShemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, RussiaFaculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, 119192 Moscow, RussiaFaculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, 119192 Moscow, Russia<i>Haematococcus lacustris</i> is a natural source of a valuable ketocarotenoid astaxanthin. Under autotrophic growth conditions, it exists in the form of a community with bacteria. The close coexistence of these microorganisms raises two questions: how broad their diversity is and how they interact with the microalga. Despite the importance these issues, little is known about microorganisms existing in <i>Haematococcus</i> cultures. For the first time, we characterize the dynamic of the <i>H. lacustris</i> microbiome of the microbiome of <i>Haematococcus</i> (a changeover of the bacterial associated species as function of the time) cultivated autotrophically in a photobioreactor based on 16S rRNA metabarcoding data. We found that Proteobacteria and Bacteroidetes are predominant phyla in the community. The Caulobacter bacterium became abundant during astaxanthin accumulation. These data were supported by microscopy. We discuss possible roles and interactions of the community members. These findings are of potential significance for biotechnology. They provide an insight into possible bacterial contamination in algal biomass and reveal the presence of bacteria essential for the algal growth.https://www.mdpi.com/2079-7737/10/2/115<i>Haematococcus lacustris</i>astaxanthinmicrobial communitiesphotobioreactors |
| spellingShingle | Konstantin Chekanov Anna Zaytseva Ilgar Mamedov Alexei Solovchenko Elena Lobakova The Dynamics of the Bacterial Community of the Photobioreactor-Cultivated Green Microalga <i>Haematococcus lacustris</i> during Stress-Induced Astaxanthin Accumulation Biology <i>Haematococcus lacustris</i> astaxanthin microbial communities photobioreactors |
| title | The Dynamics of the Bacterial Community of the Photobioreactor-Cultivated Green Microalga <i>Haematococcus lacustris</i> during Stress-Induced Astaxanthin Accumulation |
| title_full | The Dynamics of the Bacterial Community of the Photobioreactor-Cultivated Green Microalga <i>Haematococcus lacustris</i> during Stress-Induced Astaxanthin Accumulation |
| title_fullStr | The Dynamics of the Bacterial Community of the Photobioreactor-Cultivated Green Microalga <i>Haematococcus lacustris</i> during Stress-Induced Astaxanthin Accumulation |
| title_full_unstemmed | The Dynamics of the Bacterial Community of the Photobioreactor-Cultivated Green Microalga <i>Haematococcus lacustris</i> during Stress-Induced Astaxanthin Accumulation |
| title_short | The Dynamics of the Bacterial Community of the Photobioreactor-Cultivated Green Microalga <i>Haematococcus lacustris</i> during Stress-Induced Astaxanthin Accumulation |
| title_sort | dynamics of the bacterial community of the photobioreactor cultivated green microalga i haematococcus lacustris i during stress induced astaxanthin accumulation |
| topic | <i>Haematococcus lacustris</i> astaxanthin microbial communities photobioreactors |
| url | https://www.mdpi.com/2079-7737/10/2/115 |
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