2021

Ammonium assimilation and metabolism in rice

Soichi Kojima*, Keiki Ishiyama, Marcel Pascal Beier and Toshihiko Hayakawa

Progress in Botany

Publisher

2020

The function of high-affinity urea transporters in nitrogen-deficient conditions

Marcel Pascal Beier and Soichi Kojima*

Physiologia Plantarum

Publisher
Cytosolic GLUTAMINE SYNTHETASE1;1 Modulates Metabolism and Chloroplast Development in Roots

Miyako Kusano, Atsushi Fukushima, Mayumi Tabuchi-Kobayashi, Kazuhiro Funayama, Soichi Kojima, Kyonoshin Maruyama, Yoshiharu Y. Yamamoto, Tomoko Nishizawa, Makoto Kobayashi, Mayumi Wakazaki, Mayuko Sato, Kiminori Toyooka, Kumiko Osanai-Kondo, Yoshinori Utsumi, Motoaki Seki, Chihaya Fukai, Kazuki Saito and Tomoyuki Yamaya

Plant Physiology 182:1894-1909.

Publisher

2019

The urea transporter DUR3 contributes to rice production under nitrogen-deficient and field conditions

Marcel Pascal Beier, Takayuki Fujita, Kazuhiro Sasaki, Keiichi Kanno, Miwa Ohashi, Wataru Tamura, Noriyuki Konishi, Masahide Saito, Fumi Imagawa, Keiki Ishiyama, Akio Miyao, Tomoyuki Yamaya and Soichi Kojima*

Physiologia Plantarum 167:75-89.

Publisher

2018

Tos17 insertion in NADH-dependent glutamate synthase genes leads to an increase in grain protein content in rice

Fumi Imagawa, Haruka Minagawa, Yusuke Nakayama, Keiichi Kanno, Toshihiko Hayakawa and Soichi Kojima*

Journal of Cereal Science 84:38-43.

Publisher Institutional Repository グラフィカルアブストラクト
Outgrowth of rice tillers requires availability of glutamine in the basal portions of shoots

Miwa Ohashi*, Keiki Ishiyama, Soichi Kojima, Noriyuki Konishi, Kazuhiro Sasaki, Mistue Miyao, Toshihiko Hayakawa and Tomoyuki Yamaya

Rice, 11, 31

Publisher Institutional Repository
Cytosolic glutamine synthetase isozymes play redundant roles in ammonium assimilation under low-ammonium conditions in roots of Arabidopsis thaliana.

Noriyuki Konishi, Masahide Saito, Fumi Imagawa, Keiich Kanno, Tomoyuki Yamaya, and Soichi Kojima*

Plant and Cell Physiology, 59(3), 601-613

Publisher Institutional Repository
Lack of ACTPK1, an STY kinase, enhances ammonium uptake and use and promotes growth in rice seedlings under sufficient external ammonium

Marcel Pascal Beier, Mitsuhiro Obara, Akiko Taniai, Yuki Sawa, Jin Ishizawa, Haruki Yoshida, Narumi Tomita, Tsuyoshi Yamanaka, Yawara Ishizuka, Syuko Kudo, Akira Yoshinari, Shiho Takeuchi, Soichi Kojima, Tomoyuki Yamaya and Toshihiko Hayakawa*

Plant Journal, 93(6), 992-1006

Publisher

2017

Contributions of two cytosolic glutamine synthetase isozymes to ammonium assimilation in Arabidopsis roots

Noriyuki Konishi, Keiki Ishiyama, Marcel Pascal Beier, Eri Inoue, Keiichi Kanno, Tomoyuki Yamaya, Hideki Takahashi, and Soichi Kojima*

Journal of Experimental Botany, 68(3), 613-625

Publisher Institutional Repository
A temporal and spatial contribution of asparaginase to asparagine catabolism during development of rice grains

Yui Yabuki, Miwa Ohashi, Fumi Imagawa, Keiki Ishiyama, Marcel Pascal Beier, Noriyuki Konishi, Toshiko Umetsu-Ohashi, Toshihiko Hayakawa, Tomoyuki Yamaya and Soichi Kojima*

Rice,10, 1-10

Publisher Institutional Repository
Lack of cytosolic glutamine synthetase1;2 activity reduces nitrogen-dependent biosynthesis of cytokinin required for axillary bud outgrowth in rice seedlings

Miwa Ohashi, Keiki Ishiyama, Soichi Kojima, Mikiko Kojima, Hitoshi Sakakibara, Tomoyuki Yamaya, Toshihiko Hayakawa*

Plant and Cell Physiology, 58(4), 679-690

Publisher
Transcriptional repressor IAA17 is involved in nitrogen use by modulating cytosolic glutamine synthetase GLN1;2 in Arabidopsis roots

Masahide Saito, Noriyuki Konishi, Keiichi Kanno, Tomoyuki Yamaya, and Soichi Kojima*

Soil Science and Plant Nutrition, 63(2), 163-170

Publisher Institutional Repository
The chimeric repressor for the GATA4 transcription factor improves tolerance to nitrogen deficiency in Arabidopsis

Ji Min Shin, KwiMi Chung, Shingo Sakamoto, Soichi Kojima, Chuan-Ming Yeh, Miho Ikeda, Nobutaka Mitsuda, Masaru Ohme-Takagi*

Plant Biotechnology, 34(3), 151-158

Publisher

2016

テイツ・ザイガー植物生理学

編集(西谷和彦、島崎研一郎)、 翻訳分担(小島創一)

講談社サイエンティフィック

Publisher
Growth Properties and Biomass Production in the Hybrid C4 Crop Sorghum bicolor

Tazoe Y, Sazuka T, Yamaguchi M, Saito C, Ikeuchi M, Kanno K, Kojima S, Hirano K, Kitano H, Kasuga S, Endo T, Fukuda H and Marino A*

Plant and Cell Physiology, 57(5), 944-952

Publisher

2015

Urea retranslocation from senescing Arabidopsis leaves is promoted by DUR3-mediated urea retrieval from the leaf apoplast

Bohner A, Kojima S, Hajirezaei MR, Melzer M, von Wiren N*

Plant Journal, 81(3), 377-387

Publisher
Asparagine synthetase1, but not asparagine synthetase2, is responsible for the biosynthesis of asparagine following the supply of ammonium to rice roots

Ohashi, M., Ishiyama, K., Kojima, S., Nakano, K., Kanno, K., Hayakawa, T. and Yamaya, T.*

Plant and Cell Physiology, 56(4), 769-778

Publisher
Lack of cytosolic glutamine synthetase1;2 in vascular tissues of axillary buds caused severe reduction in their outgrowth and disorder of metabolic balance in rice seedlings

Miwa Ohashi, Keiki Ishiyama, Miyako Kusano, Atsushi Fukushima, Soichi Kojima, Atsushi Hanada, Keiichi Kanno, Toshihiko Hayakawa, Yoshiya Seto, Junko Kyozuka, Shinjiro Yamaguchi, Tomoyuki Yamaya*

Plant Journal, 81(2), 347-356

Publisher
Autophagy supports biomass production and nitrogen use efficiency at the vegetative stage in rice

Wada, S., Hayashida, Y., Izumi, M., Kurusu, T., Hanamata, S., Kanno, K., Kojima, S., Yamaya, T., Kuchitsu, K., Makino, A., and Ishida, H*

Plant Physiology,168(1),60-73

Publisher

2014

The CLE-CLAVATA1 peptide-receptor signaling module regulates the expansion of plant root systems in nitrogen-deficient environments

Araya, T., Miyamoto, M., Wibowo, J., Suzuki, A., Kojima, S., Tsuchiya, Y. N., Sawa, S., Fukuda, H., von Wiren, N. and Takahashi, H.

Proc. Natl. Acad. Sci. USA,111(5),2029-2034

Publisher
NADH-dependent glutamate synthase plays a crucial role in assimilating ammonium in Arabidopsis root

Noriyuki Konishi, Keiki Ishiyama, Kaya Matsuoka, Ikumi Maru, Toshihiko Hayakawa, Tomoyuki Yamaya and Soichi Kojima*

Physiologia Plantarum,152(1),138-151

Publisher
NADH-dependent glutamate synthase participated in ammonium assimilation in Arabidopsis root.

Soichi Kojima*, Noriyuki Konishi, Marcel Pascal Beier, Keiki Ishiyama, Ikumi Maru, Toshihiko Hayakawa and Tomoyuki Yamaya

Plant Signaling and Behavior,9(8),e29402

Publisher

2013

Cytosolic glutamine synthetase1;2 is responsible for the primary assimilation of ammonium in rice roots

Funayama K, Kojima S, Tabuchi-Kobayashi M, Sawa Y, Nakayama Y, Hayakawa T, Yamaya T*

Plant and Cell Physiology,54(6),934-943

Publisher Institutional Repository
Metabolic Alterations in Free Amino Acid Contents of Rice (Oryza Sativa L.) Seeds during High-Humidity Storage

K. Sasaki, H. Takahashi, S. Kojima, H. Uchimiya and T. Sato

Research J seed science,6(1),16-23

Publisher

2012

2011

Disruption of a novel NADH-glutamate synthase2 gene caused marked reduction in spikelet number of rice

Wataru Tamura, Soichi Kojima, Ayako Toyokawa, Hideo Watanabe, Mayumi Tabuchi-Kobayashi, Toshihiko Hayakawa and Tomoyuki Yamaya*

Frontiers in Plant Science,2(57),1-9

Publisher Institutional Repository

2010

Ammonium triggers lateral root branching in Arabidopsis in an AMT1;3-dependent manner

Joni Esrom Lima, Soichi Kojima, Hideki Takahashi and Nicolaus von Wiren*

Plant Cell,22(11),3621-3633

Publisher
Ammonium absorption and assimilation in plants

Soichi Kojima*, Toshihiko Hayakawa, Nicolaus von Wirén and Tomoyuki Yamaya*

In book: Nitrogen Assimilation in Plants, Research Signpost

Reverse genetics approach to characterize a function of NADH-glutamate synthase1 in rice plants

Wataru Tamura, Yusuke Hidaka, Mayumi Tabuchi, Soichi Kojima, Toshihiko Hayakawa, Tadashi Sato, Mitsuhiro Obara, Mikiko Kojima, Hitoshi Sakakibara and Tomoyuki Yamaya*

Amino Acids,39,1003-1012

Publisher Institutional Repository

2009

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2007

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2006

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植物細胞生化学分野
東北大学・大学院農学研究科
仙台市青葉区荒巻字青葉468-1, 980-8572