Relationship Between Harvesting Efficiency and Filament Morphology in <i>Arthrospira platensis</i> Gomont
<i>Arthrospira platensis</i>, a filamentous cyanobacterium, exhibits morphological variability influenced by biotic and abiotic factors. We investigated the effect of sodium ion concentration on filament length, growth, and harvest efficiency. Increasing the sodium concentration from 0.2...
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MDPI AG
2025-02-01
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| author | Ga-Hyeon Kim Yeong Jun Lee Jong-Hee Kwon |
| author_facet | Ga-Hyeon Kim Yeong Jun Lee Jong-Hee Kwon |
| author_sort | Ga-Hyeon Kim |
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| description | <i>Arthrospira platensis</i>, a filamentous cyanobacterium, exhibits morphological variability influenced by biotic and abiotic factors. We investigated the effect of sodium ion concentration on filament length, growth, and harvest efficiency. Increasing the sodium concentration from 0.2 M to 0.4 M (using NaHCO<sub>3</sub> or Na<sub>2</sub>CO<sub>3</sub>) led to a significant increase in filament length, from 0.3393 to 0.7084 mm, and longer filaments had increased auto-flotation efficiency (from 87% to 94%) within 3 h. The linear filaments, obtained via spontaneous morphological conversion, also had increased photosynthetic activity and growth rates compared to coiled filaments, and we speculate this was due to decreased self-shading and increased light penetration. However, linear filaments also had poor auto-flotation efficiency (10% after 24 h) and decreased buoyancy, and this likely limits their survival in natural ecosystems. These findings provide insights into optimizing the cultivation of <i>A. platensis</i> for biomass harvesting. |
| format | Article |
| id | doaj-art-15d9490b77e044378c829573f5e2f1be |
| institution | DOAJ |
| issn | 2076-2607 |
| language | English |
| publishDate | 2025-02-01 |
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| spelling | doaj-art-15d9490b77e044378c829573f5e2f1be2025-08-20T03:12:15ZengMDPI AGMicroorganisms2076-26072025-02-0113236710.3390/microorganisms13020367Relationship Between Harvesting Efficiency and Filament Morphology in <i>Arthrospira platensis</i> GomontGa-Hyeon Kim0Yeong Jun Lee1Jong-Hee Kwon2Department of Food Science & Technology, Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of KoreaDepartment of Food Science & Technology, Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of KoreaDepartment of Food Science & Technology, Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea<i>Arthrospira platensis</i>, a filamentous cyanobacterium, exhibits morphological variability influenced by biotic and abiotic factors. We investigated the effect of sodium ion concentration on filament length, growth, and harvest efficiency. Increasing the sodium concentration from 0.2 M to 0.4 M (using NaHCO<sub>3</sub> or Na<sub>2</sub>CO<sub>3</sub>) led to a significant increase in filament length, from 0.3393 to 0.7084 mm, and longer filaments had increased auto-flotation efficiency (from 87% to 94%) within 3 h. The linear filaments, obtained via spontaneous morphological conversion, also had increased photosynthetic activity and growth rates compared to coiled filaments, and we speculate this was due to decreased self-shading and increased light penetration. However, linear filaments also had poor auto-flotation efficiency (10% after 24 h) and decreased buoyancy, and this likely limits their survival in natural ecosystems. These findings provide insights into optimizing the cultivation of <i>A. platensis</i> for biomass harvesting.https://www.mdpi.com/2076-2607/13/2/367<i>Arthrospira platensis</i>morphologyauto-flotationphotosynthetic activity |
| spellingShingle | Ga-Hyeon Kim Yeong Jun Lee Jong-Hee Kwon Relationship Between Harvesting Efficiency and Filament Morphology in <i>Arthrospira platensis</i> Gomont Microorganisms <i>Arthrospira platensis</i> morphology auto-flotation photosynthetic activity |
| title | Relationship Between Harvesting Efficiency and Filament Morphology in <i>Arthrospira platensis</i> Gomont |
| title_full | Relationship Between Harvesting Efficiency and Filament Morphology in <i>Arthrospira platensis</i> Gomont |
| title_fullStr | Relationship Between Harvesting Efficiency and Filament Morphology in <i>Arthrospira platensis</i> Gomont |
| title_full_unstemmed | Relationship Between Harvesting Efficiency and Filament Morphology in <i>Arthrospira platensis</i> Gomont |
| title_short | Relationship Between Harvesting Efficiency and Filament Morphology in <i>Arthrospira platensis</i> Gomont |
| title_sort | relationship between harvesting efficiency and filament morphology in i arthrospira platensis i gomont |
| topic | <i>Arthrospira platensis</i> morphology auto-flotation photosynthetic activity |
| url | https://www.mdpi.com/2076-2607/13/2/367 |
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