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Carbon kinetic analysis in a soybean plant by using newly developed real-time whole-plant imaging method with positron emitting tracer imaging system (PETIS)

ポジトロンイメージング技術(PETIS)を基盤として新たに開発した全身リアルタイムイメージング法によるダイズにおける炭素栄養動態解析

河地 有木; 鈴井 伸郎; 石井 里美; 山崎 治明; 岩崎 郁*; 小川 健一*; 藤巻 秀

Kawachi, Naoki; Suzui, Nobuo; Ishii, Satomi; Yamazaki, Haruaki; Iwasaki, Aya*; Ogawa, Kenichi*; Fujimaki, Shu

Elucidation of carbon kinetics in a higher plant, in particular photosynthetic carbon dioxide (CO$$_{2}$$) fixation and photoassimilate translocation, is important from viewpoint of environmental reduction in the amounts of atmospheric CO$$_{2}$$ and from an agricultural viewpoint of the growth and development of the plant body. Previously, we have reported that whole-plant imaging for studying the complete carbon kinetics involved in photosynthesis and subsequent photoassimilate translocation and unloading. It was achieved using a positron emitting tracer imaging system (PETIS) in combination with carbon-11-labeled carbon dioxide ($$^{11}$$CO$$_{2}$$) gas tracer. In this study, real-time carbon kinetics in leaves, roots and other organs of a soybean was analyzed by using the newly developed method.

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