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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：37.57(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 
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.
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
exclusion to the direction of root tips in common reedHiguchi, Kyoko*; Fujimaki, Shu
Bio Industry, 32(12), p.46 - 52, 2015/12
no abstracts in English
(Cav.) Trin. ex Steud.] at steady state under constant high-salt conditionsFujimaki, Shu; Maruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Miwa, Eitaro*; Higuchi, Kyoko*
Plant & Cell Physiology, 56(5), p.943 - 950, 2015/05
Times Cited Count：24 Percentile：66.27(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.
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：57.61(Plant Sciences) behavior in Reed under continuous saline stressMaruyama, Teppei*; Suzui, Nobuo; Fujimaki, Shu; Kawachi, Naoki; Ishii, Satomi; Matsuhashi, Shimpei; Yoshiba, Masaaki*; Tadano, Toshiaki*; Higuchi, Kyoko*
no journal, ,
no abstracts in English
retrieving mechanisms at the shoot base to maintain low Naconcentration in the shootMaruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Fujimaki, Shu; Yoshiba, Masaaki*; Miwa, Eitaro*; Higuchi, Kyoko*
no journal, ,
retrieving mechanisims at the shoot base of common reedMaruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Fujimaki, Shu; Tadano, Toshiaki*; Miwa, Eitaro*; Higuchi, Kyoko*
no journal, ,
no abstracts in English
Tsuchiya, Masahisa*; Fukawa, Sayaka*; Suzui, Nobuo; Ishii, Satomi; Kawachi, Naoki; Fujimaki, Shu; Miwa, Eitaro*; Higuchi, Kyoko*
no journal, ,
no abstracts in English
retrieving mechanisms at the shoot base to maintain low Na concentration in the shootFujimaki, Shu; Maruyama, Teppei*; Suzui, Nobuo; Miwa, Eitaro*; Higuchi, Kyoko*
no journal, ,
no abstracts in English
Higuchi, Kyoko*; Tsuchiya, Masahisa*; Suzui, Nobuo; Miwa, Eitaro*; Fujimaki, Shu
no journal, ,
no abstracts in English
)Higuchi, Kyoko*; Sato, Takeharu*; Suzui, Nobuo; Maruyama, Teppei*; Fujimaki, Shu; Miwa, Eitaro*
no journal, ,
Fujimaki, Shu; Maruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Miwa, Eitaro*; Higuchi, Kyoko*
no journal, ,
no abstracts in English
Fujimaki, Shu; Maruyama, Teppei*; Suzui, Nobuo; Kawachi, Naoki; Miwa, Eitaro*; Higuchi, Kyoko*
no journal, ,
no abstracts in English
Suzui, Nobuo; Maruyama, Teppei*; Kawachi, Naoki; Miwa, Eitaro*; Higuchi, Kyoko*; Fujimaki, Shu
no journal, ,
no abstracts in English
Higuchi, Kyoko*; Sasaki, Minori*; Katori, Maya*; Kurita, Keisuke; Sakai, Takuro; Suzui, Nobuo*; Kawachi, Naoki*; Saito, Akihiro*; Oyama, Takuji*
no journal, ,
Expression of genes involved in the Sulfur mobilization (SUF) machinery which assembles and inserts Fe-S clusters into client proteins in chloroplast is downregulated by depletion of Fe as a substrate. The pattern and timing of their downregulation are different among barley cultivars, and that difference seems to be related to the maintenance of Photosystem I under Fe-deficient condition. These characters of barley cultivars are, however, not always correlated with overall tolerance to Fe deficiency nor total Fe concentration of leaves. Thus, we investigated the relationship between Fe influx into new leaf and downregulation of SUF machinery in Fe-deficient barley.
