Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
N as a tracerHung, N. V. P.*; Watanabe, Shiori*; Ishikawa, Shinji*; Otake, Norikuni*; Sueyoshi, Kuni*; Sato, Takashi*; Ishii, Satomi; Fujimaki, Shu; Oyama, Takuji*
Soil Science and Plant Nutrition, 59(6), p.888 - 895, 2013/12
Times Cited Count：4 Percentile：14.01(Plant Sciences)Oyama, Takuji; Fujikake, Hiroyuki*; Yashima, Hiroyuki*; Tanabata, Sayuri*; Ishikawa, Shinji*; Sato, Takashi*; Nishiwaki, Toshikazu*; Otake, Norikuni*; Sueyoshi, Kuni*; Ishii, Satomi; et al.
Soybean Physiology and Biochemistry, p.333 - 364, 2011/11
no abstracts in English
Ito, Sayuri; Fujimaki, Shu; Kato, Taichi*; Otake, Norikuni*; Sueyoshi, Kuni*; Oyama, Takuji*
Nitrogen assimilation in plants, p.205 - 214, 2010/07
N-labeled nitrogen gas tracer and the imaging of nitrogen fixation in soybean nodulesIshii, Satomi; Suzui, Nobuo; Ito, Sayuri; Ishioka, Noriko; Kawachi, Naoki; Matsuhashi, Shimpei; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
JAEA-Review 2009-041, JAEA Takasaki Annual Report 2008, P. 106, 2009/12
N-labeled nitrogen gasIshii, Satomi; Suzui, Nobuo; Ito, Sayuri; Ishioka, Noriko; Kawachi, Naoki; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
Soil Science and Plant Nutrition, 55(5), p.660 - 666, 2009/10
Times Cited Count：15 Percentile：40.97(Plant Sciences)N-labeled nitrogen gas for imaging of nitrogen fixation by soybean noduleIshii, Satomi; Suzui, Nobuo; Ishioka, Noriko; Kawachi, Naoki; Matsuhashi, Shimpei; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 111, 2008/11
Oyama, Takuji*; Sueyoshi, Kuni*; Otake, Norikuni*; Ito, Sayuri*; Ishibashi, H.*; Hara, T.*; Kimura, T.*; Matsuhashi, Shimpei; Fujimaki, Shu; Suzui, Nobuo; et al.
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 122, 2007/02
N
Ishii, Satomi; Otake, Norikuni*; Ishioka, Noriko; Suzui, Nobuo; Fujimaki, Shu; Matsuhashi, Shimpei; Oyama, Takuji*
no journal, ,
no abstracts in English
Ishii, Satomi; Suzui, Nobuo; Ishioka, Noriko; Kawachi, Naoki; Ito, Sayuri; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
no journal, ,
no abstracts in English
N labeled nitrogen gas for imaging of nitrogen fixation by soybean noduleIshii, Satomi; Suzui, Nobuo; Ishioka, Noriko; Kawachi, Naoki; Matsuhashi, Shimpei; Fujimaki, Shu; Otake, Norikuni*; Oyama, Takuji*
no journal, ,
no abstracts in English
Ishii, Satomi; Suzui, Nobuo; Ito, Sayuri; Kawachi, Naoki; Ishioka, Noriko; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
no journal, ,
no abstracts in English
Ishii, Satomi; Suzui, Nobuo; Ito, Sayuri; Ishioka, Noriko; Kawachi, Naoki; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
no journal, ,
NFujimaki, Shu; Ishii, Satomi; Suzui, Nobuo; Ito, Sayuri; Kawachi, Naoki; Otake, Norikuni*; Oyama, Takuji*; Ishioka, Noriko
no journal, ,
The positron-emitting tracer imaging system (PETIS) is one of the non-invasive imaging tools for living organisms. PETIS is specialized for plant nutrition with very compact detection heads which can be installed in a growth chamber. We have been developing the total methods of PETIS, including production of various positron-emitting radiotracers such as 
Cd, and many studies in plant nutrition have been done using PETIS in this decade. Here, we employed N for the study of symbiotic nitrogen fixation and successfully developed a rapid method to produce and purify N-labeled nitrogen gas. The gaseous tracer was fed as a mixture of N, O and He (10:20:70) to the underground part of intact nodulated soybean plants. As a result, serial images of distribution of the fixed N were obtained, and the fixation rates were estimated 0.17
0.10 
mol N h
plant (mean SD, n=6) from the data.
N-labeled nitrogen gasIshii, Satomi; Suzui, Nobuo; Ito, Sayuri; Ishioka, Noriko; Kawachi, Naoki; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
no journal, ,
no abstracts in English
Ishii, Satomi; Suzui, Nobuo; Ito, Sayuri; Ishioka, Noriko; Kawachi, Naoki; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
no journal, ,
no abstracts in English
N-labeled nitrogen gasIshii, Satomi; Suzui, Nobuo; Ito, Sayuri; Ishioka, Noriko; Kawachi, Naoki; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
no journal, ,
no abstracts in English
Ishii, Satomi; Ito, Sayuri*; Suzui, Nobuo; Ishioka, Noriko; Kawachi, Naoki; Otake, Norikuni*; Oyama, Takuji; Fujimaki, Shu
no journal, ,
N as a tracerHung, N. V. P.; Watanabe, Shiori*; Ishikawa, Shinji*; Otake, Norikuni*; Sueyoshi, Kuni*; Ishii, Satomi; Fujimaki, Shu; Oyama, Takuji*; Yashima, Hiroyuki*
no journal, ,
Biological Nitrogen Fixation (BNF) plays an important role in the plant life especial in legume species. Through symbiotic fixation process, legume plants can use atmospheric nitrogen as nutritional source for their growth and development. Soybean plants have an ability to fix dinitrogen (N) in the atmosphere in root nodules and absorb nitrogen either from fertilizer or soil N. Soybean needs a large amount of N to synthesize seed storage protein especial in stage of pod filling. Many studies have been carried out in the fields of BNF, but up to now the accurate measurement of transport rate of fixed N has not determined yet. Until now, there are many methods to investigate nitrogen fixation and transportation in leguminous plants. This study used N isotope as a tracer to quantify nitrogen fixation and the transport rate of fixed N to various parts of shoots and roots in nodulated soybean plants during relatively short time from 1 h to 8h.
partial pressure on nitrogen fixation in soybean using nitrogen isotopesHung, N. V. P.; Watanabe, Shiori*; Ishikawa, Shinji*; Otake, Norikuni*; Sueyoshi, Kuni*; Sato, Takashi*; Ishii, Satomi; Suzui, Nobuo; Kawachi, Naoki; Yin, Y.-G.; et al.
no journal, ,
Ishii, Satomi; Yin, Y.-G.; Hung, N. V. P.*; Suzui, Nobuo; Kawachi, Naoki; Otake, Norikuni*; Oyama, Takuji*; Fujimaki, Shu
no journal, ,
no abstracts in English
