東京大学大学院農学生命科学研究科Graduate School of Agricultural and Life Sciences, The University of Tokyo
放射性同位体（RI）を用いるトレーサー実験には，高い定量性と感度，そして元素自体がトレーサーとなる強みがある。42Kと137Csのトレーサー実験は，植物による放射性セシウムの吸収と体内動態の特徴をカリウムとの比較によって描きだし，22Naトレーサー実験は，導管周辺組織におけるナトリウム輸送体の機能の実態を捉えることを可能にした。近年，ゲノム科学の進展とともに実験材料は加速度的に増えており，それに応じたRI実験手法の開発も重要である。
Tracer experiments using radioisotopes (RI) are highly quantitative, sensitive, and have the advantage that the elements themselves are tracers. Our recent works on 42K and 137Cs tracer experiments have characterized the root uptake and translocation of radiocesium in plants in comparison with potassium. In the 22Na tracer experiment, we are continuing to develop new methods to analyze the function of sodium transporters. In recent years, the number of experimental materials has been increasing at an accelerating rate along with the progress of genome science, and it is important to develop RI-tracer experimental methods that can meet the needs for analysis of these materials.
Key words: Oryza sativa; transporter; xylem; root; Quercus serrata
© Japan Radioisotope Association 2022. This is an open access article distributed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License (https://creativecommons.org/licenses/by/4.0/)© Japan Radioisotope Association 2022. This is an open access article distributed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License (https://creativecommons.org/licenses/by/4.0/)
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