Publicatioins

2018

A novel estimation method of water-equivalent thicknesses of secondary particle tracks using secondary electron bremsstrahlung emitted from therapeutic ion beams for attenuation correction. M. Yamaguchi, M. Sakai, Y. Nagao, M. Kikuchi, K. Arakawa, N. Kawachi. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (in press) [DOI: 10.1016/j.nima.2018.11.066]

Elevated glutathione synthesis in leaves contributes to zinc transport from roots to shoots in Arabidopsis. A. Wongkaew, S. Nakamura, N. Suzui, Y.-G. Yin, S. Ishii, N. Kawachi, K. Kojima, H. Sekimoto, T. Yokoyama, N. Ohkama-Ohtsu. Plant Science (in press) [DOI: 10.1016/j.plantsci.2018.11.003]

Effect of number of views on cross-sectional Compton imaging: A fundamental study with backprojection. M. Sakai, R. K. Parajuli, M. Kikuchi, M. Yamaguchi, Y. Nagao, N. Kawachi, K. Arakawa, T. Nakano. Physica Medica 56: 1-9, 2018 [DOI: 10.1016/j.ejmp.2018.11.006]

In vivo simultaneous imaging with 99mTc and 18F using a Compton camera. M. Sakai, M. Yamaguchi, Y. Nagao, N. Kawachi, M. Kikuchi, K. Torikai, T. Kamiya, S. Takeda, S. Watanabe, T. Takahashi, K. Arakawa, T. Nakano. Physics in Medicine and Biology 63: 205006, 2018 [DOI: 10.1088/1361-6560/aae1d1]

Development of an Easy and Simple Method to Measure the Environmental Radioactivity in Trees with Efficient Personal Dosimeters. K. Kurita, M. Yamaguchi, Y. Nagao, N. Suzui, Y.-G. Yin, T. Yoshihara, N. Kawachi. RADIOISOTOPES 67: 427-434, 2018 [DOI: 10.3769/radioisotopes.67.427]

Source of luminescence of water lower energy than the Cerenkov-light threshold during irradiation of carbon-ion. S. Yamamoto, T. Akagi, T. Yamashita, J. Toivonen, M. Yamaguchi, M. Komori, N. Kawachi. Journal of Physics Communications 2: 065010, 2018 [DOI: 10.1088/2399-6528/aaca28]

Astatine-211 imaging by a Compton camera for targeted radiotherapy. Y. Nagao, M. Yamaguchi, S. Watanabe, N. S. Ishioka, N. Kawachi, H. Watabe. Applied Radiation and Isotopes 139: 238-243, 2018 [DOI: 10.1016/j.apradiso.2018.05.022]

Imaging of monochromatic beams by measuring secondary electron bremsstrahlung for carbon-ion therapy using a pinhole x-ray camera. M. Yamaguchi, Y. Nagao, K. Ando, S. Yamamoto, M. Sakai, R. K. Parajuli, K. Arakawa, N. Kawachi. Physics in Medicine & Biology 63: 045016, 2018 [DOI: 10.1088/1361-6560/aaa17c]

Estimation and correction of produced light from prompt gamma photons on luminescence imaging of water for proton therapy dosimetry. T. Yabe, M. Komori, T. Toshito, M. Yamaguchi, N. Kawachi, S. Yamamoto. Physics in Medicine & Biology 63: 04NT02, 2018 [DOI:10.1088/1361-6560/aaa90c]

2017

Development of a cost-effective Compton camera using a positron emission tomography data acquisition system. Y. Nagao, M. Yamaguchi, N. Kawachi, H. Watabe. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (in press) [DOI: 10.1016/j.nima.2017.10.009]

Ultracompact Compton camera for innovative gamma-ray imaging. J. Kataoka, A. Kishimoto, T. Taya, S. Mochizuki, L. Tagawa, A. Koide, K. Sueoka, H. Morita, T. Maruhashi, K. Fujieda, T. Kurihara, M. Arimoto, H. Okochi, N. Katsumi, S. Kinno, K. Matsunaga, H. Ikeda, E. Shimosegawa, J. Hatazawa, S. Ohsuka, T. Toshito, M. Kimura, Y. Nagao, M. Yamaguchi, K. Kurita, N. Kawachi. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (in press) [DOI: 10.1016/j.nima.2017.09.048]

Optimization and verification of image reconstruction for a Compton camera towards application as an on-line monitor for particle therapy. T. Taya, J. Kataoka, A. Kishimoto, L. Tagawa, S. Mochizuki, T. Toshito, M. Kimura, Y. Nagao, K. Kurita, M. Yamaguchi, N. Kawachi. Journal of Instrumentation 12: P07015, 2017 [DOI: 10.1088/1748-0221/12/07/P07015]

Development of a low-energy high resolution X-ray camera for high-energy gamma photon background environments. K. Ando, S. Yamamoto, K. Kurita, N. Suzui, Y.-G. Yin, S. Ishii, N. Kawachi. Journal of Nuclear Science and Technology, 54: 933-939, 2017 [DOI: 10.1080/00223131.2017.1323690]

Development of a low-energy x-ray camera for the imaging of secondary electron bremsstrahlung x-ray emitted during proton irradiation for range estimation. K. Ando, M. Yamaguchi, S. Yamamoto, T. Toshito, N. Kawachi. Physics in Medicine and Biology 62: 5006, 2017 [DOI: 10.1088/1361-6560/aa7166]

First demonstration of multi-color 3-D in vivo imaging using ultra-compact Compton camera. A. Kishimoto, J. Kataoka, T. Taya, L. Tagawa, S. Mochizuki, S. Ohsuka, Y. Nagao, K. Kurita, M. Yamaguchi, N. Kawachi, K. Matsunaga, H. Ikeda, E. Shimosegawa, J. Hatazawa. Scientific Reports 7: 2110, 2017 [DOI: 10.1038/s41598-017-02377-w]

Visualization of zinc dynamics in intact plants using positron imaging of commercially available 65Zn. N. Suzui, Y.-G. Yin, S. Ishii, H. Sekimoto, N. Kawachi. Plant Methods 13: 40, 2017 [DOI: 10.1186/s13007-017-0188-0]

Development of a Cherenkov light imaging system for studying the dynamics of radiocesium in plants. K. Kurita, N. Suzui, Y.-G. Yin, S. Ishii, H. Watabe, S. Yamamoto, N. Kawachi. Journal of Nuclear Science and Technology 54: 662-667, 2017 [DOI: 10.1080/00223131.2017.1299051]

Arabidopsis thaliana FLO2 is Involved in Efficiency of Photoassimilate Translocation, Which is Associated with Leaf Growth and Aging, Yield of Seeds and Seed Quality. M. Kihira, K. Taniguchi, C. Kaneko, Y. Ishii, H. Aoki, A. Koyanagi, H. Kusano, N. Suzui, Y.-G. Yin, N. Kawachi, S. Fujimaki, H. Shimada. Plant and Cell Physiology 58: 440-450, 2017 [DOI: 10.1093/pcp/pcw217]

Monte Carlo simulation of photon emission below a few hundred kiloelectronvolts for beam monitoring in carbon ion therapy. M. Yamaguchi, Y. Nagao, T. Satoh, H. Sugai, M. Sakai, K. Arakawa, N. Kawachi. Review of Scientific Instruments 88: 014301, 2017 [DOI: 10.1063/1.4973986]

2016

Detection of a gas region in a human body across a therapeutic carbon beam by measuring low-energy photons. M. Yamaguchi, Y. Nagao, N. Kawachi, T. Satoh, S. Fujimaki, T. Kamiya, K. Torikai, H. Shimada, H. Sugai, M. Sakai, K. Arakawa, T. Nakano. International Journal of PIXE 26: 61-72, 2016 [DOI: 10.1142/s0129083516500078]

Measurement of environmental radioactivity using a cumulative gamma radiation dosimeter: Fertilization-induced changes in young fruit trees, T. Yoshihara, A. Kominato, Y. Nagao, N. Kawachi, S-N. Hashida, N. Suzui, Y.-G. Yin, S. Fujimaki, Proc. ENVIRA2015; 134-137, 2016

Application of glutathione and dithiothreitol to oil seed rape (Brassica napus L.) roots affects cadmium distribution in roots and inhibits Cd translocation to shoots, S. Nakamura, N. Suzui, S. I.-Tanabata, S. Ishii, N. Kawachi, H. Rai, H. Hattori, S. Fujimaki, Soil Sci. Plant Nutr., 62: 379-385, 2016 [DOI: 10.1080/00380768.2016.1188025]

Secondary-electron-bremsstrahlung imaging for proton therapy, M. Yamaguchi, Y. Nagao, K. Ando, S. Yamamoto, T. Toshito, J. Kataoka, N. Kawachi, Nucl. Instrum. Method. Phys. Res. A, 833: 199-207, 2016 [DOI: 10.1016/j.nima.2016.07.034]

Corrigendum: Beam range estimation by measuring bremsstrahlung (2012 Phys. Med. Biol. 57 2843), M. Yamaguchi, K. Torikai, N. Kawachi, H. Shimada, T. Satoh, Y. Nagao, S. Fujimaki, M. Kokubun, S. Watanabe, T. Takahashi, K. Arakawa, T. Kamiya, T. Nakano, Phys. Med. Biol., 61: 3638–3644, 2016 [DOI: 10.1088/0031-9155/61/9/3638]

Kinetic Analysis of Zinc/Cadmium Reciprocal Competitions Suggests a Possible Zn-Insensitive Pathway for Root-to-Shoot Cadmium Translocation in Rice, L. Fontanili, C. Lancilli, N. Suzui, B. Dendena, Y.-G. Yin, A. Ferri, S. Ishii, N. Kawachi, G. Lucchini, S. Fujimaki, G. A Sacchi, F. Nocito, Rice, 9: 16, 2016 [DOI: 10.1186/s12284-016-0088-3]

Imaging of radiocesium uptake dynamics in a plant body using a newly developed high-resolution gamma camera, N. Kawachi, Y.-G. Yin, N. Suzui, S. Ishii, T. Yoshihara, H. Watabe, S. Yamamoto, S. Fujimaki, J. Environ. Radioact., 151: 461-467, 2016 [DOI: 10.1016/j.jenvrad.2015.04.009]

2015

Effects of Glutathione Concentration in the Root Zone and Glutathione Treatment Period on Cadmium Partitioning in Oilseed Rape Plants, S. Nakamura, H. Kondo, N. Suzui, Y.-G. Yin, S. Ishii, N. Kawachi, H. Rai, H. Hattori, S. Fujimaki. Molecular Physiology and Ecophysiology of Sulfur, 253-259: 2015 [DOI: 10.1007/978-3-319-20137-5_28]

Common reed accumulates starch in its stem by metabolic adaptation under Cd stress conditions, K. Higuchi, M. Kanai, M. Tsuchiya, H. Ishii, N. Shibuya, N. Fujita, Y. Nakamura, N. Suzui, S. Fujimaki, E. Miwa, Front. Plant Sci., 6: 138, 2015 [DOI: 10.3389/fpls.2015.00138]

Route and regulation of zinc, cadmium, and iron transport in rice plants (Oryza sativa L.) during vegetative growth and grain filling; Metal transporters, metal speciation, grain Cd reduction and Zn and Fe biofortification, T. Yoneyama, S. Ishikawa, S. Fujimaki. International Journal of Molecular Sciences, 16: 19111, 2015 [DOI: 10.3390/ijms160819111]

Base to tip and long-distance transport of sodium in the root of common reed (Phragmites australis (Cav.) trin. ex steud.) at steady state under constant high-salt conditions, S. Fujimaki, T. Maruyama, N. Suzui, N. Kawachi, E. Miwa, K. Higuchi, Plant Cell Physiol., 56: 943-950, 2015 [DOI: 10.1093/pcp/pcv021]

Live-imaging evaluation of the efifcacy of elevated CO2 concentration in a closed cultivation system for the improvement of bioproduction in tomato fruits, H. Yamazaki, N. Suzui, Y.- G. Yin, N. Kawachi, S. Ishii, H. Shimada, S. Fujimaki, Plant Biotechnol., 32: 31-37, 2015 [DOI: 10.5511/plantbiotechnology.14.1210a]

Monitoring of positron using high-energy gamma camera for proton therapy, S. Yamamoto, T. Toshito, M. Komori, Y. Morishita, S. Okumura, M. Yamaguchi, Y. Saito, N. Kawachi, S. Fujimaki, Ann. Nucl. Med., 29: 268-275, 2015 [DOI: 10.1007/s12149-014-0936-4]

Ultra-High resolution of radiocesium distribution detection based on Cherenkov light imaging. S. Yamamoto, Y. Ogata, N. Kawachi, N. Suzui, Y.-G. Yin, S. Fujimaki. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 777: 102-109, 2015 [DOI: 10.1016/j.nima.2014.12.090]

2014

From Laboratory to Field: OsNRAMP5-Knockdown Rice Is a Promising Candidate for Cd Phytoremediation in Paddy Fields. R. Takahashi, Y. Ishimaru, H. Shimo, K. Bashir, T. Senoura, K. Sugimoto, K. Ono, N. Suzui, N. Kawachi, S. Ishii, Y.-G. Yin, S. Fujimaki, M. Yano, N. K. Nishizawa, H. Nakanishi. PLoS ONE 9: e98816, 2014 [DOI: 10.1371/journal.pone.0098816]

From Laboratory to Field: OsNRAMP5-Knockdown Rice Is a Promising Candidate for Cd Phytoremediation in Paddy Fields. R. Takahashi, Y. Ishimaru, H. Shimo, K. Bashir, T. Senoura, K. Sugimoto, K. Ono, N. Suzui, N. Kawachi, S. Ishii, Y.-G. Yin, S. Fujimaki, M. Yano, N. K. Nishizawa, H. Nakanishi. PLoS ONE 9: e98816, 2014 [DOI: 10.1371/journal.pone.0098816]

Three-layer GSO depth-of-interaction detector for high-energy gamma camera. S. Yamamoto, H. Watabe, N. Kawachi, S. Fujimaki, K. Kato, J. Hatazawa. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 743: 124-129, 2014 [DOI: 10.1016/j.nima.2014.01.011]

A kinetic analysis of cadmium accumulation in a Cd Hyper-accumulator Fern, Athyrium Yokoscense and tobacco plants. T. Yoshihara, N. Suzui, S. Ishii, M. Kitazaki, H. Yamazaki, K. Kitazaki, N. Kawachi, Y.-G. Yin, S. Ito-Tanabata, S.-N. Hashida, K. Shoji, H. Shimada, F. Goto, S. Fujimaki. Plant, Cell & Environment 37: 1086-1096, 2014 [DOI: 10.1111/pce.12217]

2013

Quantitative analysis of the initial transport of fixed nitrogen in nodulated soybean plants using 15N as a tracer. N. Van Phi Hung, S. Watanabe, S. Ishikawa, N. Ohtake, K. Sueyoshi, T. Sato, S. Ishii, S. Fujimaki, T. Ohyama. Soil Science and Plant Nutrition 59: 888-895, 2013 [DOI:10.1080/00380768.2013.838742]

Nitrate facilitates cadmium uptake, transport and accumulation in the hyperaccumulator Sedum plumbizincicola. P. Hu, Y.-G. Yin, S. Ishikawa, N. Suzui, N. Kawachi, S. Fujimaki, M. Igura, C. Yuan, J. Huang, Z. Li, T. Makino, Y. Luo, P. Christie, L. Wu. Environmental Science and Pollution Research 20: 6306-6316, 2013 [DOI: 10.1007/s11356-013-1680-3]

Application of glutathione to roots selectively inhibits cadmium transport from roots to shoots in oilseed rape. S. Nakamura, N. Suzui, T. Nagasaka, F. Komatsu, N.S. Ishioka, S. Ito-Tanabata, N. Kawachi, H. Rai, H. Hattori, M. Chino, S. Fujimaki. Journal of Experimental Botany 64: 1073-1081, 2013 [DOI: 10.1093/jxb/ers388]

2012

Beam range estimation by measuring bremsstrahlung. M. Yamaguchi, K. Torikai, N. Kawachi, H. Shimada, T. Satoh, Y. Nagao, S. Fujimaki, M. Kokubun, S. Watanabe, T. Takahashi, K. Arakawa, T. Kamiya, T. Nakano. Physics in Medicine and Biology 57: 2843, 2012 [DOI: 10.1088/0031-9155/57/10/2843]

2011

Real-time imaging and analysis of differences in cadmium dynamics in rice cultivars (Oryza sativa) using positron-emitting107Cd tracer. S. Ishikawa, N. Suzui, S. Ito-Tanabata, S. Ishii, M. Igura, T. Abe, M. Kuramata, N. Kawachi, S. Fujimaki. BMC Plant Biology 11: 172, 2011 [DOI: 10.1186/1471-2229-11-172]

A quick incorporation of 13N into the soluble high-molecular compound in rice (Oryza sativa L.) roots by application of 13N-labeled nitrate/nitrite, T. Yoneyama, N. Suzui, N.S. Ishioka, S. Fujimaki. Soil Sci. Plant Nutr., 57, 279-282, 2011 [DOI: 10.1080/00380768.2011.576399]

Imaging of Carbon Translocation to Fruit Using Carbon-11-Labeled Carbon Dioxide and Positron Emission Tomography, N. Kawachi, K. Kikuchi, N. Suzui, S. Ishii, S. Fujimaki, N.S. Ishioka, H. Watabe, IEEE Trans. Nucl. Sci. 58: 395-399, 2011 [DOI: 10.1109/TNS.2011.2113192]

Development of head module for multi-head Si/CdTe Compton camera for medical applications, M. Yamaguchi, N. Kawachi, N. Suzui, S. Fujimaki, T. Kamiya, H. Odaka, S. Ishikawa, M. Kokubun, S. Watanabe, T. Takahashi, H. Shimada, K. Arakawa, Y. Suzuki, K. Torikai, Y. Yoshida, T. Nakano. Nucl. Instrum. Methods Phys. Res. A 648: S2-S7, 2011 [DOI: 10.1016/j.nima.2011.02.040]

Real-time whole-plant imaging of 11C translocation using positron-emitting tracer imaging, N. Kawachi, N. Suzui, S. Ishii, S. Ito, N.S. Ishioka, H. Yamazaki, A. H. Iwasaki, K. Ogawa, S. Fujimaki, Nucl. Instrum. Methods Phys. Res. A 648: S317-S320, 2011 [DOI: 10.1016/j.nima.2010.10.152]

2010

Tracing cadmium from culture to spikelet: non-invasive imaging and quantitative characterization of absorption, transport and accumulation of cadmium in an intact rice plant, S. Fujimaki, N. Suzui, N.S. Ishioka, N. Kawachi, S. Ito, M. Chino, S. Nakamura. Plant Physiology 152: 1796-1806, 2010 [DOI: 10.1104/pp.109.151035]

S. Ito, S. Fujimaki, T. Kato, N. Ohtake, K. Sueyoshi, T. Ohyama (2010) Regulation of root nodule formation in leguminous plants. In: Ohyama T, Sueyoshi K (eds) Nitrogen Assimilation in Plants. Research Signpost, Kerala, India

S. Fujimaki, S. Ishii, N.S. Ishioka (2010) Non-invasive imaging and analyses of transport of nitrogen nutrition in intact plants using a positron-emitting tracer imaging system (PETIS). In: Ohyama T, Sueyoshi K (eds) Nitrogen Assimilation in Plants. Research Signpost, Kerala, India

2009

Real-time imaging of nitrogen fixation in an intact soybean plant with nodules using 13N-labeled nitrogen gas. S. Ishii, N. Suzui, S. Ito, N. S. Ishioka, N. Kawachi, N. Ohtake, T. Ohyama and S. Fujimaki. Soil Science and Plant Nutrition 55: 660-666, 2009 [DOI: 10.1111/j.1747-0765.2009.00403.x]

Production of no-carrier-added 64Cu and applications to molecular imaging by PET and PETIS as a biomedical tracer. S. Watanabe, Y. Iida, N. Suzui, T. Katabuchi, S. Ishii, N. Kawachi, H. Hanaoka, S. Watanabe, S. Matsuhashi, K. Endo, N. Ishioka. Journal of Radioanalytical and Nuclear Chemistry 280: 199-205, 2009 [DOI: 10.1007/s10967-008-7443-9]

Experimental results of the gamma-ray imaging capability with a Si/CdTe semiconductor Compton camera. S. Takeda, H. Aono, S. Okuyama, S. Ishikawa, H. Odaka, S. Watanabe, M. Kokubun, T. Takahashi, K. Nakazawa, H. Tajima, N. Kawachi. IEEE Transaction on Nuclear Science 56: 783-790, 2009 [DOI: 10.1109/TNS.2008.2012059]

(52)Fe translocation in barley as monitored by a positron-emitting tracer imaging system (PETIS): evidence for the direct translocation of Fe from roots to young leaves via phloem. T. Tsukamoto, H. Nakanishi, H. Uchida, S. Watanabe, S. Matsuhashi, S. Mori, N. K. Nishizawa. Plant Cell Physiol 50: 48-57, 2009 [DOI: 10.1093/pcp/pcn192]

2008

Deoxymugineic acid increases Zn translocation in Zn-deficient rice plants. M. Suzuki, T. Tsukamoto, H. Inoue, S. Watanabe, S. Matsuhashi, M. Takahashi, H. Nakanishi, S. Mori, N. K. Nishizawa. Plant Molecular Biology 66: 609-617, 2008 [DOI: 10.1007/s11103-008-9292-x]

Use of positron-emitting tracer imaging system for measuring the effect of salinity on temporal and spatial distribution of 11C tracer and coupling between source and sink organs. R. Suwa, S. Fujimaki, N. Suzui, N. Kawachi, S. Ishii, K. Sakamoto, N. T. Nguyen, H. Saneoka, P. K. Mohapatra, R. E. Moghaieb. Plant Science 175: 210-216, 2008 [DOI: 10.1016/j.plantsci.2008.03.022]

Real-time analysis of photoassimilate translocation in intact eggplant fruit using (CO2)-C-11 and a positron-emitting tracer Imaging system. K. Kikuchi, S. Ishii, S. Fujimaki, N. Suzui, H. Matsuhashi, I. Honda, Y. Shishido, N. Kawachi. Journal of the Japanese Society for Horticultural Science 77: 199-205, 2008 [DOI: 10.2503/jjshs1.77.199]

Analysis of NO3 interception of the parasitic angiosperm Orobanche spp. using a positron-emitting tracer imaging system and (NO3-)-N-13: A new method for the visualization and quantitative analysis of the NO3 interception ratio. N. Kawachi, S. Fujimaki, K. Sakamoto, N. S. Ishioka, S. Matsuhashi, H. Sekimoto. Soil Science and Plant Nutrition 54: 408-416, 2008 [DOI:10.1111/j.1747-0765.2008.00252.x]

2007

Mutational reconstructed ferric chelate reductase confers enhanced tolerance in rice to iron deficiency in calcareous soil. Y. Ishimaru, S. Kim, T. Tsukamoto, H. Oki, T. Kobayashi, S. Watanabe, S. Matsuhashi, M. Takahashi, H. Nakanishi, S. Mori, N. K. Nishizawa. Proceedings of the National Academy of Sciences of the United States of America 104: 7373-7378, 2007 [DOI: 10.1073/pnas.0610555104]

The Positron Emitting Tracer Imaging System (PETIS), a Most-advanced Imaging Tool for Plant Physiology. S. Fujimaki. ITE LETTERS ON BATTERIES NEW TECHNOLOGIES AND MEDICINE 8: 404-413, 2007

2006

Mn-52 translocation in barley monitored using a positron-emitting tracer imaging system. T. Tsukamoto, H. Nakanishi, S. Kiyomiya, S. Watanabe, S. Matsuhashi, N. K. Nishizawa, S. Mori. Soil Science and Plant Nutrition 52: 717-725, 2006 [DOI: 10.1111/j.1747-0765.2006.00096.x]

Biosynthesis and secretion of mugineic acid family phytosiderophores in zinc-deficient barley. M. Suzuki, M. Takahashi, T. Tsukamoto, S. Watanabe, S. Matsuhashi, J. Yazaki, N. Kishimoto, S. Kikuchi, H. Nakanishi, S. Mori, N. K. Nishizawa. Plant Journal 48: 85-97, 2006 [DOI: 10.1111/j.1365-313X.2006.02853.x]

A new visualization technique for the study of the accumulation of photoassimilates in wheat grains using [C-11]CO2. S. Matsuhashi, S. Fujimaki, H. Uchida, N. S. Ishioka, T. Kume. Applied Radiation and Isotopes 64: 435-440, 2006 [DOI: 10.1016/j.apradiso.2005.08.020]

Kinetic analysis of carbon-11-labeled carbon dioxide for studying photosynthesis in a leaf using positron emitting tracer imaging system. N. Kawachi, K. Sakamoto, S. Ishii, S. Fujimaki, N. Suzui, N. S. Ishioka, S. Matsuhashi. Ieee Transactions on Nuclear Science 53: 2991-2997, 2006 [DOI: 10.1109/TNS.2006.881063]

Rice plants take up iron as an Fe3+-phytosiderophore and as Fe2+. Y. Ishimaru, M. Suzuki, T. Tsukamoto, K. Suzuki, M. Nakazono, T. Kobayashi, Y. Wada, S. Watanabe, S. Matsuhashi, M. Takahashi, H. Nakanishi, S. Mori, N. K. Nishizawa. Plant Journal 45: 335-346, 2006 [DOI: 10.1111/j.1365-313X.2005.02624.x]

2005

Quantitative modeling of photoassimilate flow in an intact plant using the Positron Emitting Tracer Imaging System (PETIS). S. Matsuhashi, S. Fujimaki, N. Kawachi, K. Sakamoto, N. S. Ishioka, T. Kume. Soil Science and Plant Nutrition 51: 417-423, 2005 [DOI: 10.1111/j.1747-0765.2005.tb00047.x]

Input-output analysis of in vivo photoassimilate translocation using Positron-Emitting Tracer Imaging System (PETIS) data. A. J. Keutgen, N. Keutgen, S. Matsuhashi, C. Mizuniwa, T. Ito, T. Fujimura, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, H. Uchida, A. Tsuji, S. Hashimoto. Journal of Experimental Botany 56: 1419-1425, 2005 [DOI: 10.1093/jxb/eri143]

2003

Quick and reversible inhibition of soybean root nodule growth by nitrate involves a decrease in sucrose supply to nodules. H. Fujikake, A. Yamazaki, N. Ohtake, K. Sueyoshi, S. Matsuhashi, T. Ito, C. Mizuniwa, T. Kume, S. Hashimoto, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, H. Uchida, A. Tsuji, T. Ohyama. Journal of Experimental Botany 54: 1379-1388, 2003 [DOI: 10.1093/jxb/erg147]

2002

Transfer function analysis of positron-emitting tracer imaging system (PETIS) data. N. Keutgen, S. Matsuhashi, C. Mizuniwa, T. Ito, T. Fujimura, N. S. Ishioka, S. Watanabe, T. Sekine, H. Uchida, S. Hashimoto. Applied Radiation and Isotopes 57: 225-233, 2002 [DOI: 10.1016/S0969-8043(02)00077-5]

Effects of anion channel blockers on xylem nitrate transport in barley seedlings. T. Kawachi, C. Nishijo, H. Fujikake, S. Abdel-Latif, N. Ohtake, K. Sueyoshi, T. Ohyama, N. Shigeta-Ishioka, S. Watanabe, A. Osa, T. Sekine, S. Matsuhashi, T. Ito, C. Mizuniwa, T. Kume, S. Hashimoto, H. Uchida, A. Tsuji. Soil Science and Plant Nutrition 48: 271-277, 2002 [DOI: 10.1080/00380768.2002.10409200]

2001

Effect of radiation-degraded chitosan on plants stressed with vanadium. L. Xuan Tham, N. Nagasawa, S. Matsuhashi, N. S. Ishioka, T. Ito, T. Kume. Radiation Physics and Chemistry 61: 171-175, 2001 [DOI: 10.1016/S0969-806X(00)00388-1]

Production of positron emitters of metallic elements to study plant uptake and distribution. S. Watanabe, N. S. Ishioka, A. Ose, M. Koizumi, T. Sekine, S. Kiyomiya, H. Nakanishi, S. Mori. Radiochimica Acta 89: 853-858, 2001

Rapid N transport to pods and seeds in N-deficient soybean plants. N. Ohtake, T. Sato, H. Fujikake, K. Sueyoshi, T. Ohyama, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, S. Matsuhashi, T. Ito, C. Mizuniwa, T. Kume, S. Hashimoto, H. Uchida, A. Tsuji. Journal of Experimental Botany 52: 277-283, 2001 [DOI: 10.1093/jexbot/52.355.277]

F-18 used as tracer to study water uptake and transport imaging of a cowpea plant. T. M. Nakanishi, K. Tanoi, H. Yokota, D. J. Kang, R. Ishii, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, S. Matsuhashi, T. Ito, T. Kume, H. Uchida, A. Tsuji. Journal of Radioanalytical and Nuclear Chemistry 249: 503-507, 2001 [DOI: 10.1023/A:1013217425209]

Real time visualization of N-13-translocation in rice under different environmental conditions using positron emitting tracer imaging system. S. Kiyomiya, H. Nakanishi, H. Uchida, A. Tsuji, S. Nishiyama, M. Futatsubashi, H. Tsukada, N. S. Ishioka, S. Watanabe, T. Ito, C. Mizuniwa, A. Osa, S. Matsuhashi, S. Hashimoto, T. Sekine, S. Mori. Plant Physiology 125: 1743-1753, 2001 [DOI: 10.1104/pp.125.4.1743]

Light activates (H2O)-O-15 flow in rice: Detailed monitoring using a positron-emitting tracer imaging system (PETIS). S. Kiyomiya, H. Nakanishi, H. Uchida, S. Nishiyama, H. Tsukada, N. S. Ishioka, S. Watanabe, A. Osa, C. Mizuniwa, T. Ito, S. Matsuhashi, S. Hashimoto, T. Sekine, A. Tsuji, S. Mori. Physiologia Plantarum 113: 359-367, 2001 [DOI: 10.1034/j.1399-3054.2001.1130309.x]

Ion chromatographic analysis of selected free amino acids and cations to investigate the change of nitrogen metabolism by herbicide stress in soybean (Glycine max). M. H. Jia, N. Keutgen, S. Matsuhashi, C. Mitzuniwa, T. Ito, T. Fujimura, S. Hashimoto. Journal of Agricultural and Food Chemistry 49: 276-280, 2001 [DOI: 10.1021/jf990344c]

Vanadium uptake and an effect of vanadium treatment on F-18-labeled water movement in a cowpea plant by positron emitting tracer imaging system (PETIS). J. Furukawa, H. Yokota, K. Tanoi, S. Ueoka, S. Matsuhashi, N. S. Ishioka, S. Watanabe, H. Uchida, A. Tsuji, T. Ito, T. Mizuniwa, A. Osa, T. Sekine, S. Hashimoto, T. M. Nakanishi. Journal of Radioanalytical and Nuclear Chemistry 249: 495-498, 2001 [DOI: 10.1023/A:1013276224300]

Real-time [C-11]methionine translocation in barley in relation to mugineic acid phytosiderophore biosynthesis. N. Bughio, H. Nakanishi, S. Kiyomiya, S. Matsuhashi, N. S. Ishioka, S. Watanabe, H. Uchida, A. Tsuji, A. Osa, T. Kume, S. Hashimoto, T. Sekine, S. Mori. Planta 213: 708-715, 2001 [DOI: 10.1007/s004250100552]

2000

Visualization of O-15-water flow in tomato and rice in the light and dark using a positron-emitting tracer imaging system (PETIS). S. Mori, S. Kiyomiya, H. Nakanishi, N. S. Ishioka, S. Watanabe, A. Osa, S. Matsuhashi, S. Hashimoto, T. Sekine, H. Uchida, S. Nishiyama, H. Tsukada, A. Tsuji. Soil Science and Plant Nutrition 46: 975-979, 2000 [DOI: 10.1080/00380768.2000.10409163]

1999

Analysis of nitrate absorption and transport in non-nodulated and nodulated soybean plants with 13 NO 3-and 15 NO 3. T. Sato, N. Ohtake, T. Ohyama, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, H. Uchida, A. Tsuji, S. Matsuhashi. Radioisotopes 48: 450-458, 1999 [DOI: 10.3769/radioisotopes.48.450]

Visualizing real time [C-11]methionine translocation in Fe-sufficient and Fe-deficient barley using a Positron Emitting Tracer Imaging System (PETIS). H. Nakanishi, N. Bughio, S. Matsuhashi, N. S. Ishioka, H. Uchida, A. Tsuji, A. Osa, T. Sekine, T. Kume, S. Mori. Journal of Experimental Botany 50: 637-643, 1999 [DOI: 10.1093/jxb/50.334.637]

N-13-nitrate uptake sites and rhizobium-infectible region in a single root of common bean and soybean. H. Matsunami, Y. Arima, K. Watanabe, N. S. Ishioka, S. Watanabe, A. Osa, T. Sekine, H. Uchida, A. Tsuji, S. Matsuhashi, T. Itoh, T. Kume. Soil Science and Plant Nutrition 45: 955-962, 1999 [DOI: 10.1080/00380768.1999.10414345]

1998

N. S. Ishioka, T. Sekine, H. Matsuoka, S. Watanabe, A. Osa, M. Koizumi, T. Kume, S. Matsuhashi, T. Fujimura, H. Uchida, A. Tsuji, L. X. Tham, V. H. Dang. Application of positron emitters to studies on plants. Proc. of 1997 Workshop on the Utilization of Research Reactors; 349, 1998

 

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