2025/06/16 更新

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写真a

オクムラ　マサキ
奥村 将樹
Masaki Okumura
所属
理学部 理学科 助教
職名
助教
外部リンク

学位

  • 博士（理学） （ 名古屋大学 ）

研究キーワード

  • オーキシン

  • 光合成

  • H+-ATPase

  • 植物ホルモン

研究分野

  • ライフサイエンス / 植物分子、生理科学

経歴

  • 横浜市立大学   助教

    2023年5月 - 現在

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論文

  • A tonoplast‐localized magnesium transporter is crucial for stomatal opening in Arabidopsis under high Mg <sup>2+</sup> conditions 査読

    Shin‐ichiro Inoue, Maki Hayashi, Sheng Huang, Kengo Yokosho, Eiji Gotoh, Shuka Ikematsu, Masaki Okumura, Takamasa Suzuki, Takumi Kamura, Toshinori Kinoshita, Jian Feng Ma

    New Phytologist   236 ( 3 )   864 - 877   2022年8月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

    DOI： 10.1111/nph.18410

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    その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.18410

  • CIPK23 regulates blue light‐dependent stomatal opening in <i>Arabidopsis thaliana</i> 査読

    Shin‐Ichiro Inoue, Eirini Kaiserli, Xiang Zhao, Thomas Waksman, Atsushi Takemiya, Masaki Okumura, Hirotaka Takahashi, Motoaki Seki, Kazuo Shinozaki, Yaeta Endo, Tatsuya Sawasaki, Toshinori Kinoshita, Xiao Zhang, John M. Christie, Ken‐Ichiro Shimazaki

    The Plant Journal   104 ( 3 )   679 - 692   2020年9月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

    DOI： 10.1111/tpj.14955

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    その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/tpj.14955

  • Insights into Land Plant Evolution Garnered from the Marchantia polymorpha Genome 査読

    John L. Bowman, Takayuki Kohchi, Katsuyuki T. Yamato, Jerry Jenkins, Shengqiang Shu, Kimitsune Ishizaki, Shohei Yamaoka, Ryuichi Nishihama, Yasukazu Nakamura, Frédéric Berger, Catherine Adam, Shiori Sugamata Aki, Felix Althoff, Takashi Araki, Mario A. Arteaga-Vazquez, Sureshkumar Balasubrmanian, Kerrie Barry, Diane Bauer, Christian R. Boehm, Liam Briginshaw, Juan Caballero-Perez, Bruno Catarino, Feng Chen, Shota Chiyoda, Mansi Chovatia, Kevin M. Davies, Mihails Delmans, Taku Demura, Tom Dierschke, Liam Dolan, Ana E. Dorantes-Acosta, D. Magnus Eklund, Stevie N. Florent, Eduardo Flores-Sandoval, Asao Fujiyama, Hideya Fukuzawa, Bence Galik, Daniel Grimanelli, Jane Grimwood, Ueli Grossniklaus, Takahiro Hamada, Jim Haseloff, Alexander J. Hetherington, Asuka Higo, Yuki Hirakawa, Hope N. Hundley, Yoko Ikeda, Keisuke Inoue, Shin-ichiro Inoue, Sakiko Ishida, Qidong Jia, Mitsuru Kakita, Takehiko Kanazawa, Yosuke Kawai, Tomokazu Kawashima, Megan Kennedy, Keita Kinose, Toshinori Kinoshita, Yuji Kohara, Eri Koide, Kenji Komatsu, Sarah Kopischke, Minoru Kubo, Junko Kyozuka, Ulf Lagercrantz, Shih-Shun Lin, Erika Lindquist, Anna M. Lipzen, Chia-Wei Lu, Efraín De Luna, Robert A. Martienssen, Naoki Minamino, Masaharu Mizutani, Miya Mizutani, Nobuyoshi Mochizuki, Isabel Monte, Rebecca Mosher, Hideki Nagasaki, Hirofumi Nakagami, Satoshi Naramoto, Kazuhiko Nishitani, Misato Ohtani, Takashi Okamoto, Masaki Okumura, Jeremy Phillips, Bernardo Pollak, Anke Reinders, Moritz Rövekamp, Ryosuke Sano, Shinichiro Sawa, Marc W. Schmid, Makoto Shirakawa, Roberto Solano, Alexander Spunde, Noriyuki Suetsugu, Sumio Sugano, Akifumi Sugiyama, Rui Sun, Yutaka Suzuki, Mizuki Takenaka, Daisuke Takezawa, Hirokazu Tomogane, Masayuki Tsuzuki, Takashi Ueda, Masaaki Umeda, John M. Ward, Yuichiro Watanabe, Kazufumi Yazaki, Ryusuke Yokoyama, Yoshihiro Yoshitake, Izumi Yotsui, Sabine Zachgo, Jeremy Schmutz

    Cell   171 ( 2 )   287 - 304.e15   2017年10月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

    DOI： 10.1016/j.cell.2017.09.030

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  • Photosynthesis Activates Plasma Membrane H<sup>+</sup>-ATPase via Sugar Accumulation 査読

    Masaki Okumura, Shin-ichiro Inoue, Keiko Kuwata, Toshinori Kinoshita

    Plant Physiology   171 ( 1 )   580 - 589   2016年3月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：Oxford University Press (OUP)  

    DOI： 10.1104/pp.16.00355

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  • Measurement of ATP Hydrolytic Activity of Plasma Membrane H+-ATPase from Arabidopsis thaliana Leaves

    Masaki Okumura, Toshinori Kinoshita

    BIO-PROTOCOL   6 ( 23 )   2016年

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：Bio-Protocol, LLC  

    DOI： 10.21769/bioprotoc.2044

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  • Evolutionary appearance of the plasma membrane H<sup>+</sup>-ATPase containing a penultimate threonine in the bryophyte

    Masaki Okumura, Koji Takahashi, Shin-ichiro Inoue, Toshinori Kinoshita

    Plant Signaling &amp; Behavior   7 ( 8 )   979 - 982   2012年8月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：Informa UK Limited  

    DOI： 10.4161/psb.20936

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  • Characterization of the Plasma Membrane H+-ATPase in the Liverwort <i>Marchantia polymorpha</i>

    Masaki Okumura, Shin-ichiro Inoue, Koji Takahashi, Kimitsune Ishizaki, Takayuki Kohchi, Toshinori Kinoshita

    Plant Physiology   159 ( 2 )   826 - 834   2012年4月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：Oxford University Press (OUP)  

    Abstract

    The plasma membrane H+-ATPase generates an electrochemical gradient of H+ across the plasma membrane that provides the driving force for solute transport and regulates pH homeostasis and membrane potential in plant cells. Recent studies have demonstrated that phosphorylation of the penultimate threonine in H+-ATPase and subsequent binding of a 14-3-3 protein is the major common activation mechanism for H+-ATPase in vascular plants. However, there is very little information on the plasma membrane H+-ATPase in nonvascular plant bryophytes. Here, we show that the liverwort Marchantia polymorpha, which is the most basal lineage of extant land plants, expresses both the penultimate threonine-containing H+-ATPase (pT H+-ATPase) and non-penultimate threonine-containing H+-ATPase (non-pT H+-ATPase) as in the green algae and that pT H+-ATPase is regulated by phosphorylation of its penultimate threonine. A search in the expressed sequence tag database of M. polymorpha revealed eight H+-ATPase genes, designated MpHA (for M. polymorpha H+-ATPase). Four isoforms are the pT H+-ATPase; the remaining isoforms are non-pT H+-ATPase. An apparent 95-kD protein was recognized by anti-H+-ATPase antibodies against an Arabidopsis (Arabidopsis thaliana) isoform and was phosphorylated on the penultimate threonine in response to the fungal toxin fusicoccin in thalli, indicating that the 95-kD protein contains pT H+-ATPase. Furthermore, we found that the pT H+-ATPase in thalli is phosphorylated in response to light, sucrose, and osmotic shock and that light-induced phosphorylation depends on photosynthesis. Our results define physiological signals for the regulation of pT H+-ATPase in the liverwort M. polymorpha, which is one of the earliest plants to acquire pT H+-ATPase.

    DOI： 10.1104/pp.112.195537

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