2024-03-29T10:33:02Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/456132022-11-17T02:08:08Zhdl_2115_20045hdl_2115_139Improved polyhydroxybutyrate (PHB) production in transgenic tobacco by enhancing translation efficiency of bacterial PHB biosynthetic genes翻訳効率の改善による組換え体タバコにおけるバイオプラスチック生産性の向上Matsumoto, Ken'ichiroMorimoto, KenjiroGohda, AoiShimada, HiroakiTaguchi, SeiichiTransgenic plantNicotiana tabacumPHA synthaseReal-time PCR579Polyhydroxybutyrate [P(3HB)] was produced in the transgenic tobacco harboring the genes encoding acetoacetyl-CoA reductase (PhaB) and polyhydroxyalkanoate synthase (PhaC) from Ralstonia eutropha (Cupriavidus necator) with optimized codon usage for expression in tobacco. P(3HB) contents in the transformants (0.2 mg/g dry cell weight in average) harboring the codon-optimized phaB gene was twofold higher than the control transformants harboring the wild-type phaB gene. The immunodetection revealed an increased production of PhaB in leaves, indicating that the enhanced expression of PhaB was effective to increase P(3HB) production in tobacco. In contrast, codon-optimization of the phaC gene exhibited no apparent effect on P(3HB) production. This result suggests the PhaB-catalyzed reaction to be a rate-determining step of P(3HB) biosynthesis in tobacco leaves.Society for Biotechnology, JapanJournal Articleapplication/pdfhttp://hdl.handle.net/2115/45613https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/45613/1/JBB111-4_485-488.pdf1389-1723Journal of Bioscience and Bioengineering11144854882011-04enginfo:pmid/21185778info:doi/10.1016/j.jbiosc.2010.11.020author