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Establishment of fundamental research for polyploidy breeding in the bladed Bangiales: exploration and characteristics of the polyploid hybrids

Research Project

Project/Area Number 19K06184
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 40030:Aquatic bioproduction science-related
Research InstitutionTokyo University of Marine Science and Technology

Principal Investigator

Niwa Kyosuke  東京海洋大学, 学術研究院, 准教授 (70463429)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsノリ / スサビノリ / アサクサノリ / 隠蔽種 / 異質倍数体 / 倍数性育種 / 種分化 / 分類 / 養殖ノリ / 異質倍数性
Outline of Research at the Start

現在のノリ養殖株は主に選抜育種によって育成されてきたため、遺伝的画一化が進んでいる。このため、新たな優良株を育成していくためには、遺伝的変異の拡大を図りながら新たな育種法を導入していく必要がある。そのような中、近年、ノリでも種間交雑によって異質倍数化することが確認されている。そこで、本研究では房総半島を中心に自生地で生育するノリ栽培種や近縁野生種などの分布状況を把握するとともに、種間交雑による異質倍数化したハイブリッドの探索を行い、育種素材の収集に取り組む。また、収集したハイブリッドから異質倍数化した系統保存株を確立し特性把握を行うことで、ノリの倍数性育種に向けた基盤構築に取り組む。

Outline of Final Research Achievements

Nine species of the bladed Bangiales were distributed in Kanto and Tohoku regions based on morphological and molecular analyses. The results of culture experiments and nuclear DNA marker analyses suggested that allopolyploids derived from interspecific hybridization between Neopyropia yezoensis and Neopyropia tenera extensively grow in eastern Japan. Among the native habitats, N. yezoensis, N. tenera and their allopolyploids were detected in a habitat. Furthermore, we could isolate the allopolyploid strains that exhibited superior characteristics for nori cultivation.

Academic Significance and Societal Importance of the Research Achievements

東日本における野生ノリの分布状況を明らかにし、日本新産種の発見も行った。また、本研究によりアマノリ属でも異質倍数化による同所的種分化が起きていることも推測され、ノリの分類および種分化研究を発展させる新たな知見が得られた。また、分離した異質倍数体株の中でノリ養殖にとって有用形質を持つ優良株も見つかったことから、ノリの品種開発を進めるうえで種間交雑による倍数性育種の重要性を明らかにした。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] First record of Neoporphyra haitanensis (TJChang & BFZheng) J.Brodie & L.-E.Yang (Bangiales, Rhodophyta) from Shikinejima Island and Hachijojima Island of the Izu Islands, southern central Japan2021

    • Author(s)
      Sano Fumina、Ikeura Airi、Takasugi Arata、Niwa Kyosuke
    • Journal Title

      Phycological Research

      Volume: 69 Issue: 4 Pages: 258-265

    • DOI

      10.1111/pre.12466

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stable allopolyploidy in a hybrid zone within the Matsukawaura Lagoon (Japan) between Neopyropia yezoensis and Neopyropia tenera (Bangiales, Rhodophyta) and its relevance to speciation mechanisms and crop improvement2021

    • Author(s)
      Niwa Kyosuke、Koizumi Yukiho、Iga Hiroshi
    • Journal Title

      Marine Ecology

      Volume: 42 Issue: 6

    • DOI

      10.1111/maec.12683

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular evidence of allodiploidy in F1 gametophytic blades from a cross between Neopyropia yezoensis and a cryptic species of the Neopyropia yezoensis complex (Bangiales, Rhodophyta) by the use of microsatellite markers2020

    • Author(s)
      Niwa, K., Sano, F., Sakamoto, T.
    • Journal Title

      Aquaculture Reports

      Volume: 18 Pages: 100489-100489

    • DOI

      10.1016/j.aqrep.2020.100489

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] New combinations in Neopyropia J.Brodie & L.-E.Yang (Bangiaceae, Rhodophyta) from Japan.2020

    • Author(s)
      Kikuchi, N., Niwa, K.
    • Journal Title

      Notulae algarum

      Volume: 141 Pages: 1-5

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Identification, growth, and pigment content of a spontaneous green mutant of Pyropia kinositae (Bangiales, Rhodophyta).2020

    • Author(s)
      Sano, F., Murata, K. & Niwa, K.
    • Journal Title

      Journal of Applied Phycology

      Volume: 32 Issue: 3 Pages: 1983-1994

    • DOI

      10.1007/s10811-020-02085-5

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] 養殖ノリの品種改良の現状と温暖化に向けた今後の課題2019

    • Author(s)
      二羽恭介
    • Journal Title

      海藻資源

      Volume: 44 Pages: 20-23

    • Related Report
      2019 Research-status Report
  • [Presentation] 千葉県房総半島産野生ノリの種同定と特性把握2021

    • Author(s)
      伊賀博司・佐藤鷹生・二羽恭介
    • Organizer
      令和元年度日本水産学会秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 東日本におけるアマノリ属異質倍数体の探索と生長特性2021

    • Author(s)
      佐野文菜・菊地則雄・二羽恭介
    • Organizer
      令和3年度日本水産学会春季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Possibility of polyploidy breeding using cryptic species in the marine crop Pyropia yezoensis (Bangiales, Rhodophyta)2019

    • Author(s)
      Niwa K, Abe T, Kobiyama A.
    • Organizer
      23rd International Seaweed Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of a new cultivar with high yield and high-temperature tolerance by crossbreeding of Undaria pinnatifida2019

    • Author(s)
      Niwa K. Kobiyama A.
    • Organizer
      23rd International Seaweed Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 分子同定されたウタスツノリ Pyropia kinositae 緑色型葉状体の生長と光合成色素含量に関する生理的特性2019

    • Author(s)
      佐野文菜・二羽恭介
    • Organizer
      令和元年度日本水産学会秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 養殖ノリの品種改良の現状と温暖化に向けた今後の課題2019

    • Author(s)
      二羽恭介
    • Organizer
      第28回日本海藻協会シンポジウム
    • Related Report
      2019 Research-status Report
    • Invited
  • [Book] ノリの科学2020

    • Author(s)
      二羽恭介
    • Total Pages
      208
    • Publisher
      朝倉書店
    • ISBN
      9784254485042
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-12-25  

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