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Characterization of a Chlamydomonas low-TAG accumulation mutant tar1-1 in nitrogen-deficient conditions

Research Project

Project/Area Number 25850068
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Applied biochemistry
Research InstitutionKyoto University

Principal Investigator

KAJIKAWA Masataka  京都大学, 生命科学研究科, 助教 (40594437)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords環境応答 / 栄養欠乏応答 / 植物生理学 / 光合成 / 脂質代謝 / トリアシルグリセロール / 代謝工学 / 藻類バイオテクノロジー / 植物分子生物学 / 藻類分子育種
Outline of Final Research Achievements

Although microalgae accumulate triacylglycerol (TAG) in response to N-deficient (-N) conditions, the regulatory mechanisms are poorly understood. I identified a kinase, TAG accumulation regulator 1 (TAR1), which is a member of dual-specificity tyrosine-phosphorylation-regulated kinase family in a green alga, Chlamydomonas reinhardtii. Kinase domain of TAR1 demonstrated auto- and trans-phosphorylation activities. A tar1-1 mutant accumulated TAG to levels 0.1-fold of those of a wild-type strain in -N conditions. In -N conditions, tar1-1 maintained chlorophyll and photosynthetic activity. In -N conditions, global changes in expression levels of -N responsive genes in N assimilation and tetrapyrrole metabolism were noted between tar1-1 and wild-type cells. These results indicated that TAR1 is a regulator of TAG accumulation in -N conditions, and it functions in cell growth and repression of photosynthesis in -N conditions.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (20 results)

All 2015 2014 2013 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 4 results,  Acknowledgement Compliant: 1 results) Presentation (12 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Accumulation of Squalene in a Microalga Chlamydomonas reinhardtii by Genetic Modification of Squalene Synthase and Squalene Epoxidase Genes2015

    • Author(s)
      Masataka Kajikawa, Seiko Kinohira, Akira Ando, Miki Shimoyama, Misako Kato, Hideya Fukuzawa
    • Journal Title

      PLoS ONE

      Volume: 10 Issue: 3 Pages: e0120446-e0120446

    • DOI

      10.1371/journal.pone.0120446

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Arachidonic acid-dependent carbon-eight volatile synthesis from wounded liverwort (Marchantia polymorpha)2015

    • Author(s)
      Kihara, H., Tanaka, M., Yamato, K.T., Horibara, A., Yamada, A., Kita, S., Ishizaki, K., Kajikawa, M., Fukuzawa, H., Kohchi, T., Akakabe, Y. and Matsui, K.
    • Journal Title

      Phytochemistry

      Volume: 107 Pages: 42-49

    • DOI

      10.1016/j.phytochem.2014.08.008

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Isolation and characterization of novel high-CO2-requiring mutants of Chlamydomonas reinhardtii2014

    • Author(s)
      Wang, L., Yamano, T., Kajikawa, M., Hirono, M., Fukuzawa, H.
    • Journal Title

      Photosynth. Res.

      Volume: 121 Issue: 2-3 Pages: 175-184

    • DOI

      10.1007/s11120-014-9983-x

    • NAID

      120005385881

    • Related Report
      2013 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of fertilization in on cesium concentration of rice grown in paddy field in Fukushima prefecture at 2011 and 2012.2014

    • Author(s)
      Ohmori Yoshihiro, Kajikawa Masataka, Nishida Sho, Tanaka Nobuhiro, Kobayashi Natsuko, Tanoi Keitaro, Furukawa Jun, Fujiwara toru
    • Journal Title

      Journal of Plant Research

      Volume: 127 Issue: 1 Pages: 67-71

    • DOI

      10.1007/s10265-013-0618-7

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Difference in cesium accumulation among rice cultivars grown in the paddy field in Fukushima Prefecture in 2011 and 2012.2014

    • Author(s)
      Ohmori Yoshihiro, Nishida Sho (42名中9番目), et al.
    • Journal Title

      Journal of Plant Research

      Volume: 127 Issue: 1 Pages: 57-66

    • DOI

      10.1007/s10265-013-0616-9

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Roles of Pollen-Specific Boron Efflux Transporter, OsBOR4, in the Rice Fertilization Process.2013

    • Author(s)
      Tanaka N, Uraguchi S, Saito A, Kajikawa M, Kasai K, Sato Y, Nagamura Y, and Fujiwara T
    • Journal Title

      Plant Cell Physiol.

      Volume: 54(12) Issue: 12 Pages: 2011-2019

    • DOI

      10.1093/pcp/pct136

    • Related Report
      2013 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 実用珪藻Chaetoceros gracilisにおける代謝工学:リシノール酸生産株の作出と蓄積条件の検討2015

    • Author(s)
      安部 竜樹、梶川 昌孝、伊福 健太郎、小川 純、福澤 秀哉
    • Organizer
      日本農芸化学会2015年度大会
    • Place of Presentation
      岡山大学 津島キャンパス
    • Year and Date
      2015-03-26 – 2015-03-29
    • Related Report
      2014 Annual Research Report
  • [Presentation] 窒素栄養欠乏下における緑藻クラミドモナスの脂質蓄積異常変異体tar1-1の解析2015

    • Author(s)
      梶川 昌孝、椹木 裕里、新川 はるか、山野 隆志、安藤 晶、加藤 美砂子、廣野 雅文、佐藤 直樹、福澤 秀哉
    • Organizer
      第56回日本植物生理学会年会
    • Place of Presentation
      東京農業大学 世田谷キャンパス
    • Year and Date
      2015-03-15 – 2015-03-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] トリアシルグリセロールおよびデンプン蓄積の新奇制御因子 TAR1 の単離と機能解析2014

    • Author(s)
      梶川 昌孝、椹木 裕里、新川 はるか、山野 隆志、安藤 晶、加藤 美砂子、廣野 雅文、佐藤 直樹、福澤 秀哉
    • Organizer
      第27回 植物脂質シンポジウム
    • Place of Presentation
      静岡市産学交流センター
    • Year and Date
      2014-11-28 – 2014-11-29
    • Related Report
      2014 Annual Research Report
  • [Presentation] トリアシルグリセロールおよびデンプン蓄積の新奇制御因子TAR1の単離2014

    • Author(s)
      梶川 昌孝、椹木 裕里、新川 はるか、山野 隆志、安藤 晶、加藤 美砂子、廣野 雅文、佐藤 直樹、福澤 秀哉
    • Organizer
      第11回 クラミドモナス研究会
    • Place of Presentation
      高知市文化プラザかるぽーと
    • Year and Date
      2014-10-03 – 2014-10-04
    • Related Report
      2014 Annual Research Report
  • [Presentation] セルソーターを用いた光独立栄養条件下における脂質蓄積異常変異株の解析2014

    • Author(s)
      新川 はるか、梶川 昌孝、福澤 秀哉
    • Organizer
      第11回 クラミドモナス研究会
    • Place of Presentation
      高知市文化プラザかるぽーと
    • Year and Date
      2014-10-03 – 2014-10-04
    • Related Report
      2014 Annual Research Report
  • [Presentation] Characterization of low-TAG accumulating mutant in Chlamydomonas reinhardtii2014

    • Author(s)
      1.Masataka Kajikawa, Yuri Sawaragi, Haruka Shinkawa, Takashi Yamano, Masafumi Hirono, Naoki Sato, Hideya Fukuzawa
    • Organizer
      16th International Conference on the Cell and Molecular Biology of Chlamydomonas
    • Place of Presentation
      Pacific Grove, CA, USA
    • Year and Date
      2014-06-08 – 2014-06-13
    • Related Report
      2014 Annual Research Report
  • [Presentation] セルソーターを用いたクラミドモナス脂質低蓄積変異株の単離と解析2014

    • Author(s)
      梶川 昌孝、椹木 裕里、新川 はるか、古谷 憲一、山野 隆志、廣野 雅文、福澤 秀哉
    • Organizer
      第55回日本植物生理学会年会
    • Place of Presentation
      富山大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 遺伝子改変によるスクアレン蓄積緑藻の作出2013

    • Author(s)
      木平 成子、梶川 昌孝、福澤 秀哉
    • Organizer
      日本植物細胞分子生物学会(札幌)大会・シンポジウム
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Cah4-Luc株を用いたランダム遺伝子挿入によるCCM新規調節因子の探索2013

    • Author(s)
      古谷 憲一、久保 雄昭、梶川 昌孝、福澤 秀哉
    • Organizer
      日本植物学会第77大会
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Research-status Report
  • [Presentation] セルソーターを用いた脂質蓄積異常変異株の単離2013

    • Author(s)
      梶川 昌孝、椹木 祐里、古谷 憲一、新川 はるか、山野 隆志、福澤 秀哉
    • Organizer
      ユーグレナ研究会第29回研究集会
    • Place of Presentation
      筑波大学
    • Related Report
      2013 Research-status Report
  • [Presentation] セルソーターを用いた脂質蓄積異常変異株の単離2013

    • Author(s)
      椹木 祐里、新川 はるか、山野 隆志、梶川 昌孝、福澤 秀哉
    • Organizer
      第10回クラミドモナス研究会
    • Place of Presentation
      基礎生物学研究所
    • Related Report
      2013 Research-status Report
  • [Presentation] スクアレンシンターゼを過剰発現させたクラミドモナスにおける代謝系の解析2013

    • Author(s)
      安藤晶、下山未希、梶川昌孝、福澤秀哉、加藤美砂子
    • Organizer
      第10回クラミドモナス研究会
    • Place of Presentation
      基礎生物学研究所
    • Related Report
      2013 Research-status Report
  • [Remarks] 京都大学教育研究活動データベース

    • URL

      http://kyouindb.iimc.kyoto-u.ac.jp/j/vE2bQ

    • Related Report
      2013 Research-status Report
  • [Patent(Industrial Property Rights)] 珪藻の新規形質転換ベクターおよびその含有するプロモーター配列2014

    • Inventor(s)
      伊福健太郎、菓子野康浩、福澤秀哉、梶川昌孝、小川順
    • Industrial Property Rights Holder
      伊福健太郎、菓子野康浩、福澤秀哉、梶川昌孝、小川順
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2014-182607
    • Filing Date
      2014-09-08
    • Related Report
      2014 Annual Research Report

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Published: 2014-07-25   Modified: 2019-07-29  

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