A Thermophilic Cyanobacterium, Synechococcus sp. MA19,Capable of Accumulating Poly-β-Hydroxybutyrate
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概要
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A thermophilic cyanobacterium strain MA19 that photoautotrophically accumulates a high amount of poly-β-hydroxybutyrate (PHB) was isolated and identified as Synechococcus sp. This strain accumulated PHB at more than 20% of the dry cell weight after the cells were cultivated in a nitorgen-free inorganic medium aerated with 2% CO_2. The PHB content was the highest in all the photoautotrophic organisms. PHB was observed as intracellular granules like that previously reported for other bacteria and cyanobacteria. Supplementation of CO_2 and light intensity were effective in increasing the rate of PHB accumulation by MA19. Addition of a nitrogen source resulted in reduction of PHB content. In nitrogen-depleted dark conditions, the PHB content increased to 27% because cell weight was reduced due to glycogen decomposition. MA19 is a novel candidate for PHB production from CO_2 through a photosynthetic process.
- 社団法人日本生物工学会の論文
- 1996-11-25
著者
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ASADA YASUO
National Institute of Biosciencd and Human-Technology
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Asada Yasuo
National Institute Of Bioscience And Human-technology Agency Of Industrial Science And Technology Mi
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Erata Mayumi
National Institute Of Bioscience And Human-technology Agency Of Industrial Science And Technology Mi
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Miyake Masato
National Institute Of Bioscience And Human-technology Agency Of Industrial Science And Technology Mi
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Miyake Masato
National Institute Of Bioscience And Human Technology Agency Of Industrial Science And Technology Mi
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