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Journal Articles

"Live-autoradiography" technique reveals genetic variation in the rate of Fe uptake by barley cultivars

Higuchi, Kyoko*; Kurita, Keisuke; Sakai, Takuro; Suzui, Nobuo*; Sasaki, Minori*; Katori, Maya*; Wakabayashi, Yuna*; Majima, Yuta*; Saito, Akihiro*; Oyama, Takuji*; et al.

Plants (Internet), 11(6), p.817_1 - 817_11, 2022/03

 Times Cited Count:2 Percentile:40.23(Plant Sciences)

Genetic diversity in the rate of Fe uptake by plants has not been broadly surveyed among plant species or genotypes, although plants have developed various Fe acquisition mechanisms. We adopted the "Live-autoradiography" technique with radioactive $$^{59}$$Fe to directly evaluate the uptake rate of Fe by barley cultivars from a nutrient solution containing a very low concentration of Fe. Our observations revealed that the ability to acquire Fe from the low Fe solution was not always the sole determinant of tolerance to Fe deficiency among the barley genotypes.

Journal Articles

Non-invasive imaging of sodium dynamics in common reed using positron-emitting tracer imaging system

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

Journal Articles

Evidence for Na$$^{+}$$ exclusion to the direction of root tips in common reed

Higuchi, Kyoko*; Fujimaki, Shu

Bio Industry, 32(12), p.46 - 52, 2015/12

no abstracts in English

Journal Articles

Base to tip and long-distance transport of sodium in the root of common reed [${it Phragmites australis}$ (Cav.) Trin. ex Steud.] at steady state under constant high-salt conditions

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:22 Percentile:65.02(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 $$^{22}$$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 $$^{22}$$Na for 24 h (feeding step). Then the original solution was replaced with a fresh solution containing 50 mM NaCl but no $$^{22}$$Na, in which the test plants remained for over 48 h (chase step). Non-invasive visualization of $$^{22}$$Na movement in the test plants was conducted during feeding and chase steps with PETIS. Our results revealed that $$^{22}$$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 $$^{22}$$Na was detected within the root tissue with a velocity of approximately 0.5 cm h$$^{-1}$$. On the other hand, $$^{22}$$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.

Journal Articles

Common reed accumulates starch in its stem by metabolic adaptation under Cd stress conditions

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:18 Percentile:57.94(Plant Sciences)

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

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

Oral presentation

Na$$^{+}$$ behavior in Reed under continuous saline stress

Maruyama, Teppei*; Suzui, Nobuo; Fujimaki, Shu; Kawachi, Naoki; Ishii, Satomi; Matsuhashi, Shimpei; Yoshiba, Masaaki*; Tadano, Toshiaki*; Higuchi, Kyoko*

no journal, , 

no abstracts in English

Oral presentation

Common reed has efficient Na$$^{+}$$ retrieving mechanisms at the shoot base to maintain low Na$$^{+}$$concentration in the shoot

Maruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Fujimaki, Shu; Yoshiba, Masaaki*; Miwa, Eitaro*; Higuchi, Kyoko*

no journal, , 

Oral presentation

Kinetic analysis of Na$$^{+}$$ retrieving mechanisims at the shoot base of common reed

Maruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Fujimaki, Shu; Tadano, Toshiaki*; Miwa, Eitaro*; Higuchi, Kyoko*

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

Characterization of the Cd-binding macromolecule in stem of common reed

Tsuchiya, Masahisa*; Fukawa, Sayaka*; Suzui, Nobuo; Ishii, Satomi; Kawachi, Naoki; Fujimaki, Shu; Miwa, Eitaro*; Higuchi, Kyoko*

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

Oral presentation

Common reed has efficient Na$$^{+}$$ retrieving mechanisms at the shoot base to maintain low Na$$^{+}$$ concentration in the shoot

Fujimaki, Shu; Maruyama, Teppei*; Suzui, Nobuo; Miwa, Eitaro*; Higuchi, Kyoko*

no journal, , 

no abstracts in English

Oral presentation

Effect of Cd to carbon distribution in common reed, and the characterization Cd-binding macromolecule in its stem

Higuchi, Kyoko*; Tsuchiya, Masahisa*; Suzui, Nobuo; Miwa, Eitaro*; Fujimaki, Shu

no journal, , 

no abstracts in English

Oral presentation

Sodium transport and ion transporter gene expressions in the root of common reed (${it Phragmites australis}$)

Higuchi, Kyoko*; Sato, Takeharu*; Suzui, Nobuo; Maruyama, Teppei*; Fujimaki, Shu; Miwa, Eitaro*

no journal, , 

Oral presentation

Why do the common reed plants grow on salty water ?

Fujimaki, Shu

no journal, , 

no abstracts in English

Oral presentation

How can the common reed plants grow on salty water ?; Recirculation of sodium ions back to root tips proven with a positron imaging technique

Fujimaki, Shu; Maruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Miwa, Eitaro*; Higuchi, Kyoko*

no journal, , 

no abstracts in English

Oral presentation

Analysis on sodium exclusion in the root of a salt-tolerant plant, common reed, with the positron imaging method

Fujimaki, Shu; Maruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Miwa, Eitaro*; Higuchi, Kyoko*

no journal, , 

no abstracts in English

Oral presentation

Non-invasive imaging of sodium dynamics in common reed using positron-emitting tracer imaging system

Suzui, Nobuo; Maruyama, Teppei*; Kawachi, Naoki; Miwa, Eitaro*; Higuchi, Kyoko*; Fujimaki, Shu

no journal, , 

no abstracts in English

22 (Records 1-20 displayed on this page)