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Kurita, Keisuke; Sakai, Takuro; Suzui, Nobuo*; Yin, Y.-G.*; Sugita, Ryohei*; Kobayashi, Natsuko*; Tanoi, Keitaro*; Kawachi, Naoki*
Japanese Journal of Applied Physics, 60(11), p.116501_1 - 116501_4, 2021/11
Radioisotope tracer imaging is useful for studying plant physiological phenomena. In this study, we developed an autoradiography system with phosphor powder (ZnS:Ag), "Live-autoradiography", for imaging radioisotope dynamics in a living plant. This system visualizes the element migration and accumulation in intact plants continuously under a light environment. An imaging test was performed on point sources of Cs, with a radioactivity of 10-100 kBq of being observed; this indicates satisfactory system linearity between the image intensity and the radioactivity of
Cs. Moreover, dynamics imaging of
Cs was performed on an intact soybean plant for four days. The serial images indicated
Cs accumulation in the node, vein, and growing point of the plant. The developed system can be used for studying plant physiological phenomena and can be employed for quantitative measurement of radionuclides.
Kurita, Keisuke; Miyoshi, Yuta*; Nagao, Yuto*; Yamaguchi, Mitsutaka*; Suzui, Nobuo*; Yin, Y.-G.*; Ishii, Satomi*; Kawachi, Naoki*; Hidaka, Kota*; Yoshida, Eiji*; et al.
QST-M-29; QST Takasaki Annual Report 2019, P. 106, 2021/03
Suzui, Nobuo*; Shibata, Takuya; Yin, Y.-G.*; Funaki, Yoshihito*; Kurita, Keisuke; Hoshina, Hiroyuki*; Yamaguchi, Mitsutaka*; Fujimaki, Shu*; Seko, Noriaki*; Watabe, Hiroshi*; et al.
Scientific Reports (Internet), 10, p.16155_1 - 16155_9, 2020/10
Times Cited Count:0 Percentile:0.01(Multidisciplinary Sciences)Suzui, Nobuo; Maruyama, Teppei*; Kawachi, Naoki; Miwa, Eitaro*; Higuchi, Kyoko*; Fujimaki, Shu
JAEA-Review 2015-022, JAEA Takasaki Annual Report 2014, P. 95, 2016/02
Yin, Y.-G.; Kawachi, Naoki; Suzui, Nobuo; Ishii, Satomi; Yoshihara, Toshihiro*; Watabe, Hiroshi*; Yamamoto, Seiichi*; Fujimaki, Shu
JAEA-Review 2015-022, JAEA Takasaki Annual Report 2014, P. 112, 2016/02
Kawachi, Naoki; Yin, Y.-G.; Suzui, Nobuo; Ishii, Satomi; Yoshihara, Toshihiro*; Watabe, Hiroshi*; Yamamoto, Seiichi*; Fujimaki, Shu
JAEA-Review 2015-022, JAEA Takasaki Annual Report 2014, P. 94, 2016/02
Ishii, Satomi; Yamazaki, Haruaki*; Suzui, Nobuo; Yin, Y.-G.; Kawachi, Naoki; Shimada, Hiroaki*; Fujimaki, Shu
JAEA-Review 2015-022, JAEA Takasaki Annual Report 2014, P. 93, 2016/02
Kawachi, Naoki; Yin, Y.-G.; Suzui, Nobuo; Ishii, Satomi; Yoshihara, Toshihiro*; Watabe, Hiroshi*; Yamamoto, Seiichi*; Fujimaki, Shu
Journal of Environmental Radioactivity, 151(Part 2), p.461 - 467, 2016/01
Times Cited Count:13 Percentile:49.59(Environmental Sciences)Fujimaki, Shu; Maruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Miwa, Eitaro*; Higuchi, Kyoko*
Plant & Cell Physiology, 56(5), p.943 - 950, 2015/05
Times Cited Count:16 Percentile:65.64(Plant Sciences)We analyzed the directions and rates of translocation of sodium ions (Na) within tissues of a salt-tolerant plant, common reed, and a salt-sensitive plant, rice, under constant high-salt conditions using radioactive
Na tracer and a positron-emitting tracer imaging system (PETIS). First, the test plants were incubated in a nutrient solution containing 50 mM NaCl and a trace level of
Na for 24 h (feeding step). Then the original solution was replaced with a fresh solution containing 50 mM NaCl but no
Na, in which the test plants remained for over 48 h (chase step). Non-invasive visualization of
Na movement in the test plants was conducted during feeding and chase steps with PETIS. Our results revealed that
Na was absorbed in the roots of common reed, but not transported to the upper shoot beyond the shoot base. During the chase step, a basal-to-distal movement of
Na was detected within the root tissue with a velocity of approximately 0.5 cm h
. On the other hand,
Na that absorbed in the roots of rice was continuously translocated to the whole shoot. We concluded that the basal roots and the shoot base of common reed have constitutive functions of Na
exclusion only in the direction of root tips, even under constant high-salt conditions. This function may apparently contribute to the low Na
concentration in the upper shoot and high salt tolerance of common reed.
Yamazaki, Haruaki*; Suzui, Nobuo; Yin, Y.-G.; Kawachi, Naoki; Ishii, Satomi; Shimada, Hiroaki*; Fujimaki, Shu
Plant Biotechnology, 32(1), p.31 - 37, 2015/04
Times Cited Count:10 Percentile:45.03(Biotechnology & Applied Microbiology)Higuchi, Kyoko*; Kanai, Masatake*; Tsuchiya, Masahisa*; Ishii, Haruka*; Shibuya, Naofumi*; Fujita, Naoko*; Nakamura, Yasunori*; Suzui, Nobuo; Fujimaki, Shu; Miwa, Eitaro*
Frontiers in Plant Science (Internet), 6, p.138_1 - 138_6, 2015/03
Times Cited Count:13 Percentile:57.96(Plant Sciences)Suzui, Nobuo; Kawachi, Naoki; Ishii, Satomi; Yin, Y.-G.; Iwasaki, Aya*; Ogawa, Kenichi*; Fujimaki, Shu
JAEA-Review 2014-050, JAEA Takasaki Annual Report 2013, P. 105, 2015/03
Yamamoto, Seiichi*; Ogata, Yoshimune*; Kawachi, Naoki; Suzui, Nobuo; Yin, Y.-G.; Fujimaki, Shu
Nuclear Instruments and Methods in Physics Research A, 777, p.102 - 109, 2015/03
Times Cited Count:3 Percentile:32.14(Instruments & Instrumentation)Nakamura, Shinichi*; Kondo, Hikari*; Suzui, Nobuo; Yin, Y.-G.; Ishii, Satomi; Kawachi, Naoki; Rai, Hiroki*; Hattori, Hiroyuki*; Fujimaki, Shu
Molecular Physiology and Ecophysiology of Sulfur, p.253 - 259, 2015/00
Times Cited Count:3 Percentile:81.66Takahashi, Ryuichi*; Ishimaru, Yasuhiro*; Shimo, H.*; Bashir, K.*; Senoura, Takeshi*; Sugimoto, Kazuhiko*; Ono, Kazuko*; Suzui, Nobuo; Kawachi, Naoki; Ishii, Satomi; et al.
PLOS ONE (Internet), 9(6), p.e98816_1 - e98816_7, 2014/06
Times Cited Count:34 Percentile:82.91(Multidisciplinary Sciences)Yoshihara, Toshihiro*; Suzui, Nobuo; Ishii, Satomi; Kitazaki, Mayu*; Yamazaki, Haruaki*; Kitazaki, Kazuyoshi*; Kawachi, Naoki; Yin, Y.-G.; Tanabata, Sayuri*; Hashida, Shinnosuke*; et al.
Plant, Cell & Environment, 37(5), p.1086 - 1096, 2014/05
Times Cited Count:18 Percentile:65.64(Plant Sciences)Suzui, Nobuo; Yin, Y.-G.; Igura, Masato*; Ishii, Satomi; Kawachi, Naoki; Ishikawa, Satoru*; Fujimaki, Shu
JAEA-Review 2013-059, JAEA Takasaki Annual Report 2012, P. 101, 2014/03
Ishii, Satomi; Igura, Masato*; Yin, Y.-G.; Hung, N. V. P.*; Suzui, Nobuo; Kawachi, Naoki; Koyanagi, Atsushi*; Oyama, Takuji*; Fujimaki, Shu
JAEA-Review 2013-059, JAEA Takasaki Annual Report 2012, P. 98, 2014/03
Hung, N. V. P.; Ishii, Satomi; Suzui, Nobuo; Kawachi, Naoki; Yin, Y.-G.; Koyanagi, Atsushi; Oyama, Takuji*; Fujimaki, Shu
JAEA-Review 2013-059, JAEA Takasaki Annual Report 2012, P. 99, 2014/03
The impacts of oxygen in rhizosphere on the symbiotic nitrogen fixation in real-time was evaluated under various O partial pressure. Soybean nodules were treated with mixed gas containing N
labeled with a radioisotope
N and various concentrations of O
, and the nitrogen fixation activity in the nodules was visualized by the positron-emitting tracer imaging system (PETIS). The results showed that under normal condition the nitrogen fixation ability of soybean plant was higher compared to that of under the other conditions (0% O
and 10% O
). There was no significant difference in the nitrogen fixation activity between 0% O
and 10% O
.
Kawachi, Naoki; Yin, Y.-G.; Suzui, Nobuo; Ishii, Satomi; Watabe, Hiroshi*; Yamamoto, Seiichi*; Fujimaki, Shu
JAEA-Review 2013-059, JAEA Takasaki Annual Report 2012, P. 100, 2014/03