title: Ettlia sp. YC001 showing high growth rate and lipid content under high CO2.
abstract: Over 100 green-colored colonies were isolated from environmental samples when cultivating on a BG11 agar medium, and 4 strains showing different morphologies were selected based on light microscopic observation. Among these strains, the microalgal species with the highest growth rate under 10% CO(2) was identified as Ettlia sp. YC001 using an 18S rDNA-based phylogenetic analysis and morphological comparison. The highest cell density of 3.10 g/L (based on dry cell weight) and biomass productivity of 0.19 g/L/d were obtained under 5% CO(2) after 16 days. The lipid content and productivity were also up to 42% of the dry cell weight and 80.0mg/L/d, respectively. The color of the Ettlia sp. YC001 culture changed from green to red after a month due to the accumulation of certain carotenoids. Therefore, it would seem that Ettlia sp. YC001 is appropriate for mitigating CO(2) due to its high biomass productivity, and a suitable candidate for producing biodiesel and high-value products.
authors.affiliation: Department of Biological Science, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
authors.forename: Chan
authors.initials: C
authors.lastname: Yoo
authors.forename: Gang-Guk
authors.initials: GG
authors.lastname: Choi
authors.forename: Sun-Chang
authors.initials: SC
authors.lastname: Kim
authors.forename: Hee-Mock
authors.initials: HM
authors.lastname: Oh
mesh_terms: D001483:Base Sequence; D056804:Biofuels; D002245:Carbon Dioxide / Q000378:metabolism*; D057965:Carbon Sequestration; D002338:Carotenoids / Q000032:analysis; D000460:Chlorophyta / Q000737:chemistry* / Q000235:genetics / Q000254:growth & development*; D002849:Chromatography, Gas; D016000:Cluster Analysis; D019295:Computational Biology; D017931:DNA Primers / Q000235:genetics; D008055:Lipids / Q000032:analysis*; D008957:Models, Genetic; D008969:Molecular Sequence Data; D010802:Phylogeny; D012337:RNA, Ribosomal, 18S / Q000235:genetics; D017422:Sequence Analysis, DNA
chemical_list: D056804:Biofuels; D017931:DNA Primers; D008055:Lipids; D012337:RNA, Ribosomal, 18S; D002245:Carbon Dioxide; D002338:Carotenoids