Suteaki Shioya
Sojo University
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Publication
Featured researches published by Suteaki Shioya.
Engineering in Life Sciences | 2015
Shinjiro Yamamoto; Shuhei Hayashi; Shintaro Furusaki; Suteaki Shioya
Cultured plant cells generally produce low levels of secondary metabolites, and elicitors of secondary metabolites usually inhibit callus growth. The aim of this study was to determine the effect of 5‐aminolevulinic acid (ALA), a chlorophyll precursor that promotes plant growth, on callus induction from leaves of Taxus cuspidata, and on callus growth on solid medium. ALA at 0.76, 7.6, and 76 μM had similar effects on callus induction and growth, while ALA at 760 μM had negative effects. Next, the effects of ALA concentrations on callus growth and paclitaxel production in suspension cultures in the dark were evaluated. The results showed that 0.76 and 7.6 μM ALA stimulated growth and paclitaxel production, while 76 μM ALA had negative effects. ALA is thought to promote cellular activity under light conditions. Therefore, the effects of light intensity on callus growth and paclitaxel production in the presence of ALA were evaluated. Our results showed that the best conditions for callus growth and paclitaxel production were 7.6 μM ALA under photosynthetically active radiation of 12 μmol photons m−2 s−1. Callus growth and paclitaxel production were inhibited under stronger light (24 μmol photons m−2 s−1). Together, these results show that ALA promoted callus growth and the production of paclitaxel by light‐grown cultured T. cuspidata cells.
Applied Microbiology and Biotechnology | 2010
Churairat Moukamnerd; Masahiro Kino-oka; Minetaka Sugiyama; Yoshinobu Kaneko; Chuenchit Boonchird; Satoshi Harashima; Hideo Noda; Kazuaki Ninomiya; Suteaki Shioya; Yoshio Katakura
Asia-Pacific Journal of Chemical Engineering | 2014
Kohei Taura; Shinjiro Yamamoto; Shuhei Hayashi; Shintaro Furusaki; Suteaki Shioya
Solvent Extraction Research and Development-japan | 2013
Kohei Taura; Shinjiro Yamamoto; Shuhei Hayashi; Suteaki Shioya
Solvent Extraction Research and Development-japan | 2014
Shinjiro Yamamoto; Kohei Taura; Shuhei Hayashi; Suteaki Shioya
Encyclopedia of Industrial Biotechnology | 2010
Suteaki Shioya
Journal of Bioscience and Bioengineering | 2009
Shuhei Hayashi; Yuya Takezaki; Noriyuki Konishi; Kaori Oshima; Shintaro Furusaki; Shinjiro Yamamoto; Suteaki Shioya
Archive | 2006
Noorhisham Tan Kofli; Keisuke Nagahisa; Hiroshi Shimizu; Suteaki Shioya
Chinese Journal of Biotechnology | 1995
Chen J; Takeshi Omasa; Yoshio Katakura; Suteaki Shioya; Suga K
Solvent Extraction Research and Development-japan | 2014
Shinjiro Yamamoto; Hiroki Koga; Shuhei Hayashi; Suteaki Shioya