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Traits of sweet potato in response to high CO2

Research Project

Project/Area Number 16H05055
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental agriculture(including landscape science)
Research InstitutionNagoya University

Principal Investigator

Yano Katsuya  名古屋大学, 生命農学研究科, 准教授 (00283424)

Co-Investigator(Kenkyū-buntansha) 近藤 始彦  名古屋大学, 生命農学研究科, 教授 (00355538)
竹本 愛子 (田中愛子)  名古屋大学, 生命農学研究科, 研究員 (90464148)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2016: ¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
KeywordsCO2 / バイオマス / サツマイモ / ジャガイモ / 窒素固定 / エンドファイト / リン / 水利用効率 / 気孔コンダクタンス / イモ類 / 窒素 / 塊根肥大 / イモ肥大成長
Outline of Final Research Achievements

We have previously found that sweet potato plants demonstrated high biomass production capacity under high CO2 environment. The cause was analyzed from 1) nitrogen fixation ability by endophytes, 2) secondary growth of tuber making sink capacity flexible. The nitrogen-fixing ability of sweet potato was estimated through the δ15N analysis, showing a greater variation similar to that by soybean to corn. Treating the sweet potato tuberous root so as not to enlarge does not cause an increase in leaf starch concentration or a decrease in stomatal conductance. Moreover, in potato plants with high CO2 environment, the biomass production ability did not increase due to aging promoted probably by nitrogen deficiency at later growth stage. These results suggest that the flexibility of sink capacity alone is not enough to enhance biomass under elevated CO2.

Academic Significance and Societal Importance of the Research Achievements

大気CO2濃度の上昇を植物バイオマス生産能の向上にいかに活用するかが問われている。しかし、高CO2環境下における植物生産力の向上は期待よりも貧弱な場合が多い。この原因として、1)窒素欠乏、2)葉内での糖・デンプンの蓄積、の2点がしばしば指摘されてきた。サツマイモは高CO2環境下で高いバイオマス生産能を発揮するが、その原因として1)エンドファイトによる窒素固定能、2)肥大成長可能なシンク器官が糖・デンプンの葉内蓄積を抑制するのではないかと考えた。本研究の結果、イモのような柔軟なシンク容量を具えるだけでは不十分であり、それに加えて窒素欠乏を回避することが必要であることが示唆された。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (11 results)

All 2018 2017 2016

All Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 1 results) Book (1 results)

  • [Journal Article] Draft Genome Sequence of Burkholderia vietnamiensis Strain RS1, a Nitrogen-Fixing Endophyte Isolated from Sweet Potato2018

    • Author(s)
      Shinjo R, Uesaka K, Ihara K, Sakazaki S, Yano K, Kondo M, Tanaka A
    • Journal Title

      eCollection

      Volume: 7 Issue: 3

    • DOI

      10.1128/mra.00820-18

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Al resistance and mechanical impedance to roots in Zea mays: Reduced Al toxicity via enhanced mucilage production2017

    • Author(s)
      Kazuhiro OKAMOTO, Katsuya YANO
    • Journal Title

      Rhizosphere

      Volume: 3 Pages: 60-66

    • DOI

      10.1016/j.rhisph.2016.12.005

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Varietal differences in the growth responses of rice to an arbuscular mycorrhizal fungus under natural upland conditions2017

    • Author(s)
      Sisaphaithong T, Hanai S, Tomioka R, Kobae Y, Tanaka A, Yano K, Takenaka C, Hata S
    • Journal Title

      Plant Signaling & Behavior

      Volume: 12 Issue: 1 Pages: e1274483-e1274483

    • DOI

      10.1080/15592324.2016.1274483

    • NAID

      120006711674

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Complete genome sequence of Kosakonia sacchari strain BO-1, an endophytic diazotroph isolated from a sweet potato2016

    • Author(s)
      Shinjo R, Uesaka K, Ihara K, Loshakova K, Mizuno Y, Yano K, Tanaka A
    • Journal Title

      Genome Annoucements

      Volume: 4 Issue: 5

    • DOI

      10.1128/genomea.00868-16

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Interaction between P supply and elevated CO2 on biomass production and water-economy of potato2018

    • Author(s)
      Yi Y, Yano K
    • Organizer
      第246回日本作物学会講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 高CO2環境下における土耕ダイズのリン施肥反応2018

    • Author(s)
      村瀬 志織, 吉田 篤司, 矢野 勝也
    • Organizer
      第246回日本作物学会講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 土壌の滅菌がサツマイモの生育と窒素固定能へ及ぼす影響 -作付履歴の異なる土壌間での比較-2017

    • Author(s)
      新庄莉奈、田中愛子、矢野勝也、近藤始彦
    • Organizer
      日本作物学会第244回講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Effect of diazotrophic endophytes on growth in sweet potato2017

    • Author(s)
      Kseniia Loshakova, Aiko Tanaka, Rina Shinjo, Katsuya Yano and Motohiko Kondo
    • Organizer
      日本作物学会第244回講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 窒素固定エンドファイトBurkholderia vietnamiensisの分離とイネへの生育促進効果2017

    • Author(s)
      新庄莉奈・田中愛子・矢野勝也・近藤始彦
    • Organizer
      土壌肥料学会中部支部会
    • Place of Presentation
      名古屋
    • Related Report
      2016 Annual Research Report
  • [Presentation] Isolation and characterization of novel diazotrophic Burkholderia vietnamiensis as an endophytic bacterium in sweet potato tuberous root.2016

    • Author(s)
      Rina Shinjo, Aiko Tanaka, Hisanori Yamakawa, Kazuma Uesaka, Yuichi Fujita, Kunio Ihara, Katsuya Yano.
    • Organizer
      第4回アジア植物共生窒素固定学会
    • Place of Presentation
      ペナン
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Book] リンの事典2017

    • Author(s)
      矢野勝也ら
    • Total Pages
      344
    • Publisher
      朝倉書店
    • ISBN
      9784254141047
    • Related Report
      2017 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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