- Medium Chain Length Polyhydroxyalkanoate Production by Engineered Pseudomonas gessardii Using Acetate-formate as Carbon Sources
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Woo Young Kim, Seung-Jin Kim, Hye-Rin Seo, Yoonyong Yang, Jong Seok Lee, Moonsuk Hur, Byoung-Hee Lee, Jong-Geol Kim, Min-Kyu Oh
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J. Microbiol. 2024;62(7):569-579. Published online May 3, 2024
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DOI: https://doi.org/10.1007/s12275-024-00136-x
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Production of medium chain length polyhydroxyalkanoate (mcl-PHA) was attempted using Pseudomonas gessardii NIBRBAC000509957, which was isolated from Sunchang, Jeollabuk-do, Republic of Korea (35°24'27.7"N, 127°09'13.0"E) and effectively utilized acetate and formate as carbon sources. We first evaluated the utilization of acetate as a carbon source, revealing optimal growth at 5 g/L acetate. Then, formate was supplied to the acetate minimal medium as a carbon source to enhance cell growth. After overexpressing the acetate and formate assimilation pathway enzymes, this strain grew at a significantly higher rate in the medium. As this strain naturally produces PHA, it was further engineered metabolically to enhance mcl-PHA production. The engineered strain produced 0.40 g/L of mcl-PHA with a biomass content of 30.43% in fed-batch fermentation.
Overall, this strain can be further developed to convert acetate and formate into valuable products.
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Citations
Citations to this article as recorded by  - Formate-driven photoautotrophic growth and biopolymer storage in anaerobic purple bacteria
Mohammad Adib Ghazali Abdul Rahman, Bronwyn Laycock, Steven Pratt, Damien J. Batstone
Bioresource Technology.2025; 434: 132753. CrossRef - Sulphide and oleic acid synergism in accelerating mcl-PHA biopolymer production in Pseudomonas aeruginosa MCC 5300 by modulating electron transport system
Raghavendra Paduvari, Divyashree Somashekara
Biochemistry and Biophysics Reports.2025; 44: 102286. CrossRef - Unlocking efficient polyhydroxyalkanoate production by Gram-positive Priestia megaterium using waste-derived feedstocks
Xinyi Bai, Libo Xu, Kang Li, Guangbao Zhang, Mengjun Zhang, Yi Huang
Microbial Cell Factories.2025;[Epub] CrossRef - Selective utilization of formic acid and acetic acid in succinic acid fermentation broth to produce single-cell protein using Rhodotorula glutinis
Fuqiang Liu, Pengfei Wu, Lin Yu, Zitu Lü, Xinying Sun, Jiaxin Li, Lei Liu, Jing Wu, Jianan Zhang
Bioprocess and Biosystems Engineering.2025;[Epub] CrossRef
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