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Establishment of chromosome analysis methods and their application on genetic resources and genome studies in tropical fruits

Research Project

Project/Area Number 17K07647
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Horticultural science
Research InstitutionKagoshima University

Principal Investigator

Yamamoto Masashi  鹿児島大学, 農水産獣医学域農学系, 教授 (00305161)

Co-Investigator(Kenkyū-buntansha) 山本 俊哉  国立研究開発法人農業・食品産業技術総合研究機構, 本部, 所長・部門長 (60355360)
奈島 賢児  日本大学, 生物資源科学部, 講師 (30779616)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords染色体 / ゲノム / パインアップル / ピタヤ / 熱帯果樹 / rDNA / FISH / in situ ハイブリダイゼーション / CMA / DAPI / 蛍光染色 / 果樹 / ビタヤ
Outline of Final Research Achievements

Chromosomes of pineapple and pitaya, major tropical fruit trees, were analyzed. We have established a technique for preparing chromosome samples by the enzyme maceration method using seedlings for pineapple and cuttings for pitaya. In both fruit trees, the CMA + regions of the chromosome were corresponded with those of DAPI-, and the 18S-5.8S-25S rDNA gene was located in these regions. The positions of 5S rDNA were detecting in pineapple. The 5S and 18S-5.8S-25S rDNA sites were located on different chromosomes. In Pitaya, we examined interspecific and polyploid differences in chromosomal configuration. At the chromosomal level, the differences between species were extremely small.

Academic Significance and Societal Importance of the Research Achievements

染色体は遺伝子の担体であり、この詳細を解明することは育種や遺伝資源研究にとって重要である。本研究において世界および日本での主要熱帯果樹であるパインアップルおよびピタヤの染色体標本作製技術の開発、その利用による染色体構成の特徴を解明したことは、今後、両樹種の遺伝的改良や遺伝資源としての利用に大きく資するものである。さらに本研究ではFISH法よって染色体上でのrDNA遺伝子を検出した。この適用により、有用遺伝子の染色体での位置を解明することも可能となった。これは染色体研究とゲノム研究との融合を図るものである。成果は学術的意義だけでなく、育種等にも利用できるもので、社会的意義も高い。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2020 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] Fluorescent staining and FISH of rDNA of pitaya (Hylocereus spp.) chromosomes2020

    • Author(s)
      Yamamoto, M., Shimajiri, Y., Nashima, K., Yamamoto, T.
    • Journal Title

      Tropical Agriculture and Development

      Volume: 64 Pages: 212-217

    • NAID

      130008028952

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enzyme Maceration, Fluorescent Staining, and FISH of rDNA of Pineapple (<i>Ananas comosus</i> (L.) Merr.) Chromosomes2019

    • Author(s)
      Masashi Yamamoto, Makoto Takeuchi, Kenji Nashima and Toshiya Yamamoto
    • Journal Title

      The Horticulture Journal

      Volume: 88 Issue: 4 Pages: 455-461

    • DOI

      10.2503/hortj.UTD-102

    • NAID

      130007734371

    • ISSN
      2189-0102, 2189-0110
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] パインアップル染色体におけるリボゾームDNAの蛍光in situハイブリダイゼーション2019

    • Author(s)
      山本雅史・奈島賢児・竹内誠人・山本俊哉
    • Organizer
      日本熱帯農業学会第125回講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] ピタヤ(ドラゴンフルーツ)の染色体観察2018

    • Author(s)
      山本雅史・島尻庸平・奈島賢児・山本俊哉
    • Organizer
      園芸学会平成30年度秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] パインアップルにおける酵素解離空気乾燥法による染色体標本の作製とその蛍光染色2018

    • Author(s)
      山本雅史・竹内誠人
    • Organizer
      園芸学会平成30年度春季大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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