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Journal Articles

${it Arabidopsis sos1}$ mutant in a salt-tolerant accession revealed an importance of salt acclimation ability in plant salt tolerance

Ariga, Hirotake*; Katori, Taku*; Yoshihara, Ryohei*; Hase, Yoshihiro; Nozawa, Shigeki; Narumi, Issei; Iuchi, Satoshi*; Kobayashi, Masatomo*; Tezuka, Kenji*; Sakata, Yoichi*; et al.

Plant Signaling & Behavior (Internet), 8(7), p.e24779_1 - e24779_5, 2013/07

Based on analysis of the salinity tolerance among 354 ${it Arabidopsis thaliana}$ accessions, some accessions showed greater salt shock tolerance compared with a reference accession, Col-0 on a typical assay with drastic change in NaCl concentration from 0 mM to 225 mM. On the other hand, several accessions including Zu-0 exhibited marked acquired salt tolerance, which is induced after exposure to moderate salt stress (salt acclimation ability). It is likely that Arabidopsis plants have at least two types of tolerance abilities, salt shock tolerance and salt acclimation. To dissect the salt tolerance mechanisms of the salt tolerant accessions, we isolated a salt-sensitive mutant from ion beam-mutagenized Zu-0 seedlings. The mutant showed severe growth inhibition under salt shock stress due to a single base deletion in SOS1 gene as well-known salt shock tolerance gene, even more salt sensitive than Col-0. Nevertheless, the mutant was able to survive on the salt acclimation with 100 mM NaCl for 7 days followed with 750 mM sorbitol for 20 days (salt acclimation assay) as well as the Zu-0 wild type, whereas Col-0 showed apparent chlorosis under the condition. We propose that a gene for salt acclimation ability is different from a gene for salt shock tolerance and plays an important role in acquisition for marked salt- or osmotic tolerance.

Journal Articles

Architecture plan of the real-time diagnostic signals acquisition system toward JT-60SA project

Sakata, Shinya; Yamaguchi, Taiji; Sugimura, Toru; Kominato, Toshiharu; Kawamata, Yoichi; Totsuka, Toshiyuki; Sato, Minoru; Sueoka, Michiharu; Naito, Osamu

Fusion Science and Technology, 60(2), p.496 - 500, 2011/08

 Times Cited Count:0 Percentile:0.01(Nuclear Science & Technology)

For a steady state operation of JT-60SA, a plasma feedback control using various diagnostic sensor signals plays an essential role. To realize this, Real Time Diagnostic Signals acquisition System, RTDS, which utilizes PC-based real-time OS "INtime", has been under consideration toward JT-60SA project. Moreover, long-time experiments more than 100 seconds will be planned in JT-60SA project. Therefore, real time monitoring will be required as an essential function that displays acquired diagnostic signals on real time during long-time experiment. This function will be also realized by utilizing RTDS.

Journal Articles

Development of PC-based control system in JT-60SA

Kawamata, Yoichi; Sugimura, Toru; Yamaguchi, Taiji; Sueoka, Michiharu; Sakata, Shinya; Totsuka, Toshiyuki; Sato, Minoru; Kominato, Toshiharu; Naito, Osamu

Fusion Science and Technology, 60(2), p.491 - 495, 2011/08

 Times Cited Count:0 Percentile:0.01(Nuclear Science & Technology)

Journal Articles

Identified charged hadron production in $$p + p$$ collisions at $$sqrt{s}$$ = 200 and 62.4 GeV

Adare, A.*; Afanasiev, S.*; Aidala, C.*; Ajitanand, N. N.*; Akiba, Yasuyuki*; Al-Bataineh, H.*; Alexander, J.*; Aoki, Kazuya*; Aphecetche, L.*; Armendariz, R.*; et al.

Physical Review C, 83(6), p.064903_1 - 064903_29, 2011/06

 Times Cited Count:164 Percentile:99.44(Physics, Nuclear)

Transverse momentum distributions and yields for $$pi^{pm}, K^{pm}, p$$, and $$bar{p}$$ in $$p + p$$ collisions at $$sqrt{s}$$ = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the RHIC. We present the inverse slope parameter, mean transverse momentum, and yield per unit rapidity at each energy, and compare them to other measurements at different $$sqrt{s}$$ collisions. We also present the scaling properties such as $$m_T$$ and $$x_T$$ scaling and discuss the mechanism of the particle production in $$p + p$$ collisions. The measured spectra are compared to next-to-leading order perturbative QCD calculations.

Journal Articles

Assessment of irradiation treatments on a salt-tolerant Arabidopsis, Zu-0 and ${it Thellungiella}$

Taji, Teruaki*; Horiguchi, Akane*; Ikeda, Akiro*; Nakajima, Chihiro*; Sakata, Yoichi*; Yoshihara, Ryohei; Nozawa, Shigeki; Hase, Yoshihiro; Narumi, Issei

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 72, 2011/01

no abstracts in English

Journal Articles

Improvement of the real-time processor in JT-60 data processing system

Sakata, Shinya; Kiyono, Kimihiro; Sato, Minoru; Kominato, Toshiharu; Sueoka, Michiharu; Hosoyama, Hiroki; Kawamata, Yoichi

Fusion Engineering and Design, 84(7-11), p.1680 - 1683, 2009/06

 Times Cited Count:1 Percentile:10.66(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Design study of the JT-60SA supervisory control system

Kawamata, Yoichi; Naito, Osamu; Kiyono, Kimihiro; Itami, Kiyoshi; Totsuka, Toshiyuki; Akasaka, Hiromi; Sueoka, Michiharu; Sato, Tomoki; Oshima, Takayuki; Sakata, Shinya; et al.

Fusion Engineering and Design, 83(2-3), p.198 - 201, 2008/04

 Times Cited Count:3 Percentile:24.84(Nuclear Science & Technology)

The design activity of JT-60SA (JT-60 Super Advanced) which is remodeled to a superconducting tokamak device has been starting under the JA-EU collaborative ITER-BA project. For the JT-60SA control system, the existing system should be reused as much as possible from the viewpoint of cost-effectiveness. We have just begun to discuss the configuration of the advanced Supervisory Control System (SVCS) including the following systems: (1) ultimately flexible real-time control system, (2) precise timing system enough to clarify cause and effect, and (3) safety shutdown control system. In this report, we present the design study of the JT-60SA SVCS with focusing on these systems.

Journal Articles

Status and prospect of JT-60 plasma control and diagnostic data processing systems for advanced operation scenarios

Kurihara, Kenichi; Yonekawa, Izuru; Kawamata, Yoichi; Sueoka, Michiharu; Hosoyama, Hiroki*; Sakata, Shinya; Oshima, Takayuki; Sato, Minoru; Kiyono, Kimihiro; Ozeki, Takahisa

Fusion Engineering and Design, 81(15-17), p.1729 - 1734, 2006/07

 Times Cited Count:13 Percentile:67.77(Nuclear Science & Technology)

A large tokamak fusion device JT-60 is expected to explore more advanced tokamak discharge scenario towards the ITER and a future power reactor. We believe the following experimental issues are expected to be solved in JT-60. To clarify how to keep a steady-state plasma with high performance, and how to avoid plasma instabilities almost completely. By stimulus of this motivation, several essential development and modifications of plasma control and data acquisition systems have been performed in JT-60. In this report, we discuss the developments to improve the JT-60 plasma control and data acquisition systems. In addition, a future plasma control and data acquisition systems leading to a standard design for a power reactor is envisaged on the basis of the 20-year plasma operation experiences.

Journal Articles

Advanced real-time feedback control in JT-60U high performance discharges for application to fusion reactor plasmas

Fukuda, Takeshi; Oikawa, Toshihiro; Takeji, Satoru; Isayama, Akihiko; Kawano, Yasunori; Neyatani, Yuzuru; Nagashima, Akira; Nishitani, Takeo; Konoshima, Shigeru; Tamai, Hiroshi; et al.

Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.357 - 367, 2002/09

 Times Cited Count:7 Percentile:45.43(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Feedback control of radiation region in radiative divertor plasma on JT-60U tokamak

Tamai, Hiroshi; Konoshima, Shigeru; Hosogane, Nobuyuki; Asakura, Nobuyuki; Sakata, Shinya; Saito, Naoyuki; *; Akasaka, Hiromi; Kawamata, Yoichi; Kurihara, Kenichi

Fusion Engineering and Design, 39-40, p.163 - 167, 1998/00

 Times Cited Count:9 Percentile:61.42(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Feedback control of neutron emission rate in JT-60U

Neyatani, Yuzuru; Fukuda, Takeshi; Nishitani, Takeo; Yoshino, Ryuji; Kawamata, Yoichi; Sakata, Shinya; Saito, Naoyuki; Kimura, Toyoaki

Fusion Engineering and Design, 36(2-3), p.429 - 433, 1997/05

 Times Cited Count:12 Percentile:68.74(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Tokamak plasma shape identification with a Legendre-Fourier expansion of the vacuum poloidal flux function in the toroidal coordinates

Kurihara, Kenichi; Kimura, Toyoaki; ; Kawamata, Yoichi; Sakata, Shinya; Akasaka, Hiromi

JAERI-M 90-001, 45 Pages, 1990/02

JAERI-M-90-001.pdf:1.84MB

no abstracts in English

Journal Articles

JT-60 Plasma Control System

Kurihara, Kenichi; Kimura, Toyoaki; Yonekawa, Izuru; ; Matsukawa, Makoto; ; Kawamata, Yoichi; Totsuka, Toshiyuki; Akasaka, Hiromi; Sakata, Shinya

Fusion Engineering and Design, 11, p.441 - 454, 1990/00

no abstracts in English

Oral presentation

Design study of the plasma control system for JT-60SA

Kurihara, Kenichi; Kawamata, Yoichi; Sueoka, Michiharu; Nakazato, Mikoto; Sakata, Shinya; Kiyono, Kimihiro; Naito, Osamu; Ozeki, Takahisa; Takenaga, Hidenobu; Suzuki, Takahiro; et al.

no journal, , 

no abstracts in English

Oral presentation

Characterization of a novel Cd sensitive mutant in Arabidopsis

Nakamura, Atsuko*; Ichikawa, Kazuki*; Kojima, Kazuaki*; Ono, Yutaka; Kobayashi, Yasuhiko; Tanaka, Shigeo*; Sakata, Yoichi*

no journal, , 

Phytochelatin (PC) has been shown to play an important role in heavy metal detoxification. However, Arabidopsis transgenic plants overexpressing the PC synthase gene failed to show an increase in Cd tolerance. To explore a novel heavy metal detoxification mechanism, we screened for an Arabidopsis Cd-sensitive mutant (${it cds1}$) by carbon ion beam mutagenesis, which causes large base pair deletions at random loci in the genome. Genetic analyses and GSH synthesis inhibitor studies revealed that the ${it cds1}$ phenotype was different from those of PC synthesis mutants. Moreover, Cd content in shoots of ${it cds1}$ cultured on Cd-containing media was similar to wild type, suggesting that Cd-sensitive phenotype of ${it cds1}$ was not attributed to the Cd transport system from roots to shoots. In the rough mapping, ${it cds1}$ was localized to approximately 300kbp region of chromosome 4. One of the genes was found to have a 2.5 kbp deletion in the promoter region.

Oral presentation

Conception of new supervisory control system toward JT-60SA

Totsuka, Toshiyuki; Sakata, Shinya; Sato, Minoru; Kiyono, Kimihiro; Naito, Osamu; Kawamata, Yoichi

no journal, , 

no abstracts in English

Oral presentation

Isolation of salt-sensitive mutants from ion beam-irradiated seeds of salt-resistant ${it Arabidopsis}$ and ${it Thellungiella}$

Horiguchi, Akane*; Ariga, Hirotake*; Igarashi, Junko*; Katori, Taku*; Sakata, Yoichi*; Hayashi, Takahisa*; Taji, Teruaki*; Yoshihara, Ryohei; Nozawa, Shigeki; Hase, Yoshihiro; et al.

no journal, , 

no abstracts in English

Oral presentation

Unraveling the salt habituation mechanism of salt-tolerant Arabidopsis

Taji, Teruaki*; Katori, Taku*; Ariga, Hirotake*; Iuchi, Satoshi*; Kobayashi, Masatomo*; Shinozaki, Kazuo*; Yoshihara, Ryohei; Nozawa, Shigeki; Hase, Yoshihiro; Narumi, Issei; et al.

no journal, , 

no abstracts in English

18 (Records 1-18 displayed on this page)
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