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Journal Articles

A New visualization technique for the study of the accumulation of photoassimilates in wheat grains using [$$^{11}$$C]CO$$_{2}$$

Matsuhashi, Shimpei; Fujimaki, Shu; Uchida, Hiroshi*; Ishioka, Noriko; Kume, Tamikazu

Applied Radiation and Isotopes, 64(4), p.435 - 440, 2006/04

 Times Cited Count:18 Percentile:77.84(Chemistry, Inorganic & Nuclear)

no abstracts in English

Journal Articles

Real-time [$$^{11}$$C]methionine translocation in barley in relation to mugineic acid phytosiderophore biosynthesis

Bughio, N.*; Nakanishi, Hiromi*; Kiyomiya, Shoichiro*; Matsuhashi, Shimpei; Ishioka, Noriko; Watanabe, Satoshi; Uchida, Hiroshi*; Tsuji, Atsunori*; Osa, Akihiko; Kume, Tamikazu; et al.

Planta, 213(5), p.708 - 715, 2001/09

 Times Cited Count:16 Percentile:38.22(Plant Sciences)

[$$^{11}$$C]Methionine ([$$^{11}$$C]Met) was supplied through barley roots and the $$^{11}$$C signal was follwoed using a real-time imaging system (PETIS), with subsequent development of autoradiographic images of the whole plant. In all cases, [$$^{11}$$C]Met was first translocated to the discrimination center, and this part was strongly labeled. Met absorbed by roots of the plants was subsequently translocated to other parts of the plant. In Fe-deficient (-Fe) barley plants, a drastic reduction in [$$^{11}$$C]Met translocation from the roots to the shoot was observed, while a greater amount of $$^{11}$$C was found in the leaves of Fe-sufficient or Met-pretreated -Fe plants. Treatment of -Fe plants with amiooxyacetic acid increased the translocation of [$$^{11}$$C]Met to the shoot. The retention of exogenously supplied [$$^{11}$$C]Met in the roots of -Fe barley indicates that the Met is used in the biosynthesis of mugineic acid (MA) in barley roots. This and the absence of Met movement from shoots to the roots suggest that the MA phytosiderophores precursor Met originates in the roots of plants.

Journal Articles

Evaluation of internal and external doses from $$^{11}$$C produced in the air in high energy proton accelerator tunnels

Endo, Akira; Oki, Yuichi*; Kanda, Yukio*; Oishi, Tetsuya; Kondo, Kenjiro*

Radiation Protection Dosimetry, 93(3), p.223 - 230, 2001/00

 Times Cited Count:6 Percentile:45.06(Environmental Sciences)

no abstracts in English

Journal Articles

Characterization of $$^{11}$$C, $$^{13}$$N and $$^{15}$$O produced in air through nuclear spallation reactions by high energy protons

Endo, Akira; Oki, Yuichi*; Kanda, Yukio*; Kondo, Kenjiro*

Proceedings of 10th International Congress of the International Radiation Protection Association (IRPA-10) (CD-ROM), 8 Pages, 2000/05

no abstracts in English

Journal Articles

Study on plant physiological functions using positron emitting tracer

Chino, Mitsuo*; Kume, Tamikazu

Nihon Genshiryoku Gakkai-Shi, 41(10), p.35 - 36, 1999/10

no abstracts in English

Journal Articles

Visualizing real time [$$^{11}$$C]methionine translocation in Fe-sufficient and Fe-deficient barley using a Positron Emitting Tracer Imaging System (PETIS)

Nakanishi, Hiromi*; N.Bughio*; Matsuhashi, Shimpei; Ishioka, Noriko; Uchida, Hiroshi*; Tsuji, Atsunori*; Osa, Akihiko; Sekine, Toshiaki; Kume, Tamikazu; Mori, Satoshi*

Journal of Experimental Botany, 50(334), p.637 - 643, 1999/05

no abstracts in English

Journal Articles

Production of positron emitters and application of their labeled compounds to plant studies

Ishioka, Noriko; Matsuoka, Hiromitsu; Watanabe, Satoshi; Osa, Akihiko; Koizumi, Mitsuo; Matsuhashi, Shimpei; Kume, Tamikazu; Sekine, Toshiaki; Uchida, Hiroshi*; Tsuji, Atsunori*; et al.

Journal of Radioanalytical and Nuclear Chemistry, 239(2), p.417 - 421, 1999/00

 Times Cited Count:26 Percentile:86.22(Chemistry, Analytical)

no abstracts in English

Journal Articles

Application of positron imaging for plant research

Kume, Tamikazu

Dai-23-Kai Nihon Aisotopu, Hoshasen Sogo Kaigi Hobunshu, p.1 - 8, 1998/00

no abstracts in English

Journal Articles

Application of positron emitting tracer for plants

Kume, Tamikazu

Hoshasen To Sangyo, (79), p.25 - 29, 1998/00

no abstracts in English

Journal Articles

Production of positron emitter-labeled compounds for plant study using an AVF cyclotron

Ishioka, Noriko

Hoshasen To Sangyo, (80), p.11 - 15, 1998/00

no abstracts in English

Journal Articles

Application of positron imaging system for plants

Kume, Tamikazu

Radioisotopes, 47(3), p.283 - 284, 1998/00

no abstracts in English

Journal Articles

A New water target system for the production of $$^{18}$$F and $$^{13}$$N to be used in plant study

Ishioka, Noriko; Matsuoka, Hiromitsu; Watanabe, Satoshi; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki

Synthesis and Applications of Isotopically Labelled Compounds 1997, p.669 - 672, 1998/00

no abstracts in English

Journal Articles

Analysis of carbon translocation in plants using positron-emitting tracer

Kume, Tamikazu; Matsuhashi, Shimpei; Ito, Hitoshi; G.W.Roeb*; Ishioka, Noriko; Osa, Akihiko; Matsuoka, Hiromitsu; Sekine, Toshiaki; Uchida, Hiroshi*; Tsuji, Atsunori*; et al.

JAERI-Review 97-015, p.51 - 53, 1997/11

no abstracts in English

Journal Articles

Positron imasing analysis of plants

Kume, Tamikazu

Hoshasen To Sangyo, 0(73), p.60 - 61, 1997/00

no abstracts in English

Journal Articles

PET-2 application for the study of plant metabolism

Kume, Tamikazu

Riken Shimpojiumu Kasokuki O Mochiita Yodenshi Riyo Gijutsu No Tenkai, 0, p.19 - 22, 1996/00

no abstracts in English

Journal Articles

Characteristics of the chemical forms of $$^{11}$$C, $$^{13}$$N, and $$^{15}$$O induced in air by the operation of a 100MeV electron linear accelerator

Endo, Akira; Kikuchi, Masamitsu; ; Ikezawa, Yoshio

Health Physics, 68(1), p.80 - 88, 1995/01

 Times Cited Count:6 Percentile:55.59(Environmental Sciences)

no abstracts in English

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