Research Project
Grant-in-Aid for Challenging Research (Exploratory)
Using “ultra oil cell” induced by nutrient starvation and intense light stress, we decided to create a cell factory (Chlorella factory) that accumulated functional substances such as ω3 fatty acids and carotenoids. We focused on selecting strains suitable for the cell factory with an awareness of practical application. The phylogenetic relationship of species and strains about the productivity of fats and carotenoids in addition to biomass were clarified by collecting a wide range of green algae, mainly Trebouxiophyceae and conducting molecular phylogenetic analysis. Most of the species and strains investigated can be easily cultured not only with autotrophs but also with heterotrophs and mixed nutrients, and have high biomass productivity. The productivity of fats under heterotrophic nutrition varies greatly depending on the strain, but some strains had an oil content of more than 50%.
2021年4月の「2030年度の温室効果ガス削減目標を2013年度比で46%削減する」との政府発表は、パリ協定にもられた26%でも実現を危ぶまれていたので、各界に衝撃をもって受け止められている。地球温暖化は待ったなしであるが、世代時間の短い微細藻類であれば、10年間の研究期間でも二酸化炭素削減に資する新たな品種を開発できる可能性がある。微細藻類を「育種する」という発想こそが、応用微生物学の新たなトレンドになると考え、多くの株とその培養方法を検討するとともに重イオンビーム照射による分子育種法を開発してきた。カロテノイドと長鎖不飽和脂肪酸を大量生産する「超オイル細胞」の作出はその延長線上にある。
All 2021 2020 2019 2018 Other
All Int'l Joint Research (2 results) Journal Article (13 results) (of which Int'l Joint Research: 4 results, Peer Reviewed: 11 results, Open Access: 8 results) Presentation (17 results) (of which Int'l Joint Research: 1 results, Invited: 2 results) Book (1 results) Remarks (4 results) Patent(Industrial Property Rights) (1 results)
Cytologia
Volume: 85 Pages: 178-185
130007907373
Genes
Volume: 11 Issue: 8 Pages: 944-944
10.3390/genes11080944
CYTOLOGIA
Volume: 84 Issue: 4 Pages: 323-330
10.1508/cytologia.84.323
130007769499
Anal. Chem.
Volume: 91 Issue: 24 Pages: 15563-15563
10.1021/acs.analchem.9b03563
Sci. Rep.
Volume: 9 Issue: 1 Pages: 13523-13523
10.1038/s41598-019-50070-x
120007163346
Plant Morphology
Volume: 31 Pages: 19-23
130007823155
MDB技術予測レポート
Volume: 1 Pages: 1-15
Microscopy
Volume: 68 Issue: 1 Pages: 57-68
10.1093/jmicro/dfy142
バイオインダストリー
Volume: 36 Pages: 1-11
Algal Res.
Volume: 36 Pages: 37-47
10.1016/j.algal.2018.09.022
Volume: 35 Pages: 416-426
10.1016/j.algal.2018.09.005
Scientific Reports
Volume: 8 Issue: 1 Pages: 1-10
10.1038/s41598-018-23854-w
Volume: 35 Pages: 9-20
http://park.itc.u-tokyo.ac.jp/pls/research.html
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