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Diversification of agriculturally important traits accelerated by polyploidization in Diospyros

Research Project

Project/Area Number 15K14654
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Horticultural science
Research InstitutionKyoto University

Principal Investigator

Akagi Takashi  京都大学, 農学研究科, 助教 (50611919)

Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords性決定 / 進化 / ゲノム / 果樹 / カキ / 倍数化 / 雌雄異株 / 雌雄異花同株 / エピジェネティクス / 果実 / エピジェネティック制御 / 栽培化 / 適応進化
Outline of Final Research Achievements

In diploid persimmons, we previously elucidated the mechanism of sex determination that a Y-encoded pseudo-gene called OGI, via the production of small-RNAs against the gene encoding the female-determining factor MeGI, derives separate male and female individuals. On the other hand, in hexaploid Diospyros kaki, this regulatory mechanism leads to the formation of both male and female flowers (monoeocy), in genetically male individuals. Here we revealed that, in monoecious hexaploid persimmon, the DNA methylation levels on the MeGI is the key factor to determine flowert sexuality. Instead, OGI expression is generally undetectable, due to the SINE-like transposon insertion of a transposon in the 5' region of its promoter. This transposon insertion is highly methylated as is reported SINE families in other plant species, and is conserved in all Y-carrying D. kaki cultivars, suggesting either natural selection or a strong bottleneck for the silenced OGI gene during polyploidization.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (15 results)

All 2017 2016 2015 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results,  Acknowledgement Compliant: 2 results) Presentation (11 results) (of which Int'l Joint Research: 3 results,  Invited: 8 results) Remarks (1 results)

  • [Int'l Joint Research] University of California Davis(米国)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Epigenetic Regulation of the Sex Determination Gene MeGI in Polyploid Persimmon2016

    • Author(s)
      Akagi T, Henry IM, Kawai T, Comai L, Tao R
    • Journal Title

      The Plant Cell

      Volume: 28 Issue: 12 Pages: 2905-2915

    • DOI

      10.1105/tpc.16.00532

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] A male determinant gene in diploid dioecious Diospyros, OGI, is required for male flower production in monoecious individuals of oriental persimmon (D. kaki)2016

    • Author(s)
      Akagi T, Kawai T, Tao R
    • Journal Title

      Scientia Horticulturae

      Volume: 213 Pages: 243-251

    • DOI

      10.1016/j.scienta.2016.10.046

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Sex determination in oriental persimmon (Diospyros kaki).2017

    • Author(s)
      Akagi, T., I. M. Henry, T. Kawai, L. Comai and R. Tao
    • Organizer
      Plant and Animal Genome Conference XXV
    • Place of Presentation
      San Diego
    • Year and Date
      2017-01-14
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 柿における性の成立と揺らぐ性への進化2017

    • Author(s)
      赤木剛士
    • Organizer
      植物科学シンポジウム
    • Place of Presentation
      東京大学
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Evolution of a flexible sex determination system in polyploid persimmon2016

    • Author(s)
      Akagi T.
    • Organizer
      Kyoto-Swiss Symposium 2016
    • Place of Presentation
      Kyoto University
    • Year and Date
      2016-10-31
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 木本性植物における性決定機構の多様性と一般性 ~カキとキウイフルーツと…2016

    • Author(s)
      赤木剛士
    • Organizer
      日本植物学会第80回大会
    • Place of Presentation
      沖縄コンベンションセンター
    • Year and Date
      2016-09-16
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] カキ属の性決定を統御する転写因子2016

    • Author(s)
      赤木剛士
    • Organizer
      園芸学会 平成28年度秋季大会
    • Place of Presentation
      名城大学
    • Year and Date
      2016-09-10
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] エピジェネティックな記憶によるカキの可塑的な性決定(第2報)2016

    • Author(s)
      赤木剛士・Isabelle M. Henry・Luca Comai・田尾龍太郎
    • Organizer
      園芸学会 平成28年度秋季大会
    • Place of Presentation
      名城大学
    • Year and Date
      2016-09-10
    • Related Report
      2016 Annual Research Report
  • [Presentation] カキ属植物における「柔軟な」性決定~遺伝的制御からエピジェネティック性への進化2016

    • Author(s)
      赤木剛士
    • Organizer
      日本遺伝学会 第88回大会
    • Place of Presentation
      日本大学三島キャンパス
    • Year and Date
      2016-09-07
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] エピジェネテッィクな記憶によるカキの可塑的な性決定 (第1報)2016

    • Author(s)
      赤木剛士・Isabelle M. Henry・河井崇・Luca Comai・田尾龍太郎
    • Organizer
      園芸学会
    • Place of Presentation
      東京農業大学厚木キャンパス
    • Year and Date
      2016-03-26
    • Related Report
      2015 Research-status Report
  • [Presentation] Evolution of flexible sex determination system in polyploid persimmon2016

    • Author(s)
      Takashi Akagi, Isabelle M. Henry, Ryutaro Tao, Luca Comai
    • Organizer
      Plant and Animal Genome Congress XXIV
    • Place of Presentation
      San Diego
    • Year and Date
      2016-01-09
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] カキ属における性決定遺伝子相同因子群の重複進化2015

    • Author(s)
      赤木剛士・Isabelle M Henry・Luca Comai・田尾龍太郎
    • Organizer
      園芸学会
    • Place of Presentation
      徳島大学常三島キャンパス
    • Year and Date
      2015-09-26
    • Related Report
      2015 Research-status Report
  • [Presentation] 「柿」で見つかった性決定因子の示す可能性2015

    • Author(s)
      赤木剛士
    • Organizer
      日本植物学会
    • Place of Presentation
      朱鷺メッセ新潟コンベンションセンター
    • Year and Date
      2015-09-06
    • Related Report
      2015 Research-status Report
    • Invited
  • [Remarks] 柿の「揺らぐ性別」の仕組みを解明 -エピジェネティックな記憶がつくる植物の柔軟性-

    • URL

      http://www.kyoto-u.ac.jp/ja/research/research_results/2016/161212_2.html

    • Related Report
      2016 Annual Research Report

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Published: 2015-04-16   Modified: 2022-02-16  

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