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論文

From laboratory to field; ${it OsNRAMP5}$-knockdown rice is a promising candidate for Cd phytoremediation in paddy fields

高橋 竜一*; 石丸 泰寛*; Shimo, H.*; Bashir, K.*; 瀬野浦 武志*; 杉本 和彦*; 小野 和子*; 鈴井 伸郎; 河地 有木; 石井 里美; et al.

PLOS ONE (Internet), 9(6), p.e98816_1 - e98816_7, 2014/06

 被引用回数:51 パーセンタイル:86.87(Multidisciplinary Sciences)

Previously, we reported that OsNRAMP5 functions as a manganese, iron, and cadmium (Cd) transporter. The shoot Cd content in ${it OsNRAMP5}$ RNAi plants was higher than that in wild-type (WT) plants, whereas the total Cd content (roots plus shoots) was lower. For efficient Cd phytoremediation, we produced ${it OsNRAMP5}$ RNAi plants using the natural high Cd-accumulating cultivar Anjana Dhan (A5i). Using a positron-emitting tracer imaging system, we assessed the time-course of Cd absorption and accumulation in A5i plants. Enhanced $$^{107}$$Cd translocation from the roots to the shoots was observed in A5i plants. To evaluate the phytoremediation capability of A5i plants, we performed a field experiment in a Cd-contaminated paddy field. The biomass of the A5i plants was unchanged by the suppression of ${it OsNRAMP5}$ expression; the A5i plants accumulated twice as much Cd in their shoots as WT plants. Thus, A5i plants could be used for rapid Cd extraction and the efficient phytoremediation of Cd from paddy fields, leading to safer food production.

口頭

Supercapacitor using lithium-ion endohedral metallofullerene

Kwon, E.*; 小松 健一郎*; 山田 洋一*; 長谷川 友里*; 佐藤 翔*; 境 誠司; 河地 和彦*; 横尾 邦義*; 小野 昭一*; 笠間 泰彦*; et al.

no journal, , 

Since the synthesis and characterization of lithium cation endohedral metallofullerene(lic fullerene), several investigations have been performed on the application of lic fullerene to the functional materials. However, there has been no study on the application of the "lic fullerene" to the energy storage systems. In the present work, we investigated the energy storage characteristics of Li@C$$_{60}$$ capacitor. The energy stored by Li@C$$_{60}$$/o-DCB capacitor was greater by several times than that stored by TBA/o-DCB capacitor under the same conditions. This result indicated that TBA ions undergo solvation and the size of the solvated TBA would be larger than that of Li@C$$_{60}$$ ions. Moreover, the charging speed of Li@C$$_{60}$$/o-DCB capacitor was faster than that of TBA/o-DCB capacitor. This would originate from the shape of Li@C$$_{60}$$ ion having a spherical structure.

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