Enhancing microalgal biomass productivity by engineering a microalgal-bacterial community

This study demonstrates that ecologically engineered bacterial consortium could enhance microalgal biomass and lipid productivities through carbon exchange. Phycosphere bacterial diversity analysis in xenic Chlorella vulgaris (XCV) confirmed the presence of growth enhancing and inhibiting microorgan...

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Bibliographic Details
Published in:Bioresource technology 2015-01, Vol.175, p.578-585
Main Authors: Cho, Dae-Hyun, Ramanan, Rishiram, Heo, Jina, Lee, Jimin, Kim, Byung-Hyuk, Oh, Hee-Mock, Kim, Hee-Sik
Format: Article
Language:English
Subjects:
Bacteria
Bacteria - genetics
Bacteria - metabolism
Biomass
Biotechnology
Biotechnology - methods
Carbon
Carbon - metabolism
Chlorella vulgaris
Chlorella vulgaris - growth & development
Chlorella vulgaris - metabolism
Chlorella vulgaris - microbiology
Consortia
Exchange
Flocculation
Lipid Metabolism
Lipids
Lipids - chemistry
Microalgae - growth & development
Microalgae - metabolism
Microalgae - microbiology
Microbial Consortia - genetics
Microbial Consortia - physiology
Productivity
Symbiosis
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Summary:This study demonstrates that ecologically engineered bacterial consortium could enhance microalgal biomass and lipid productivities through carbon exchange. Phycosphere bacterial diversity analysis in xenic Chlorella vulgaris (XCV) confirmed the presence of growth enhancing and inhibiting microorganisms. Co-cultivation of axenic C. vulgaris (ACV) with four different growth enhancing bacteria revealed a symbiotic relationship with each bacterium. An artificial microalgal-bacterial consortium (AMBC) constituting these four bacteria and ACV showed that the bacterial consortium exerted a statistically significant (P
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2014.10.159