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Identification of toxic plants from mixed samples by Next Generation Sequencing

Research Project

Project/Area Number 17K15886
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Legal medicine
Research InstitutionNational Research Institute of Police Science

Principal Investigator

Hitomi Kikkawa  科学警察研究所, 法科学第三部, 主任研究官 (20392269)

Project Period (FY) 2018-02-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords有毒植物 / 次世代シークエンス / 食中毒 / DNAバーコーディング / 混合試料 / DNA解析 / DNAバーコディング
Outline of Final Research Achievements

Some plants are toxic and show strong morphological similarities to edible plants. Therefore, poisoning is frequently caused by accidental ingestion of them by mistake. In this study, we developed a species identification method for mixed samples by next-generation sequencing (NGS). We developed and optimized a sequencing method of specific loci for plant species identification, known as DNA barcoding regions (trnL and rbcL).
We analyzed mixed samples, cooked materials and simulated gastric contents. At first, mixed samples were assessed. All species were detected except rbcL region of one species. Next, cooked materials and simulated gastric contents were prepared and examined. All tested species could be detected at least one region. These results indicated that NGS utilizing DNA barcoding region are useful for forensic analysis of plant materials.

Academic Significance and Societal Importance of the Research Achievements

有毒植物を山菜と誤認することによる中毒事故は毎年多く発生している。その際、食用山菜との混合物中から未知の有毒植物を検出すること、消化の影響を受けている場合でも原因の植物を同定すること等が求められる。本研究では、混合された状態からの有毒植物のDNAによる検出法を開発した。その結果、形態では判別できない混合物であっても、また調理残渣や模擬胃内容物でも、中毒原因の植物種を特定できると考えられた。本手法は植物種を問わず、汎用的に使用できることから、中毒事案の原因究明に寄与することが期待される。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (6 results)

All 2022 2021 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (3 results) (of which Invited: 1 results)

  • [Journal Article] 次世代シーケンサーによるによる食用山菜との混合物中の有毒植物の検出手法の開発2022

    • Author(s)
      吉川ひとみ、柘 浩一郎
    • Journal Title

      DNA多型

      Volume: -

    • Related Report
      2021 Annual Research Report
  • [Journal Article] 科学警察研究所における植物資料に対するDNA鑑定の取り組み2021

    • Author(s)
      吉川ひとみ
    • Journal Title

      DNA鑑定

      Volume: 12 Pages: 3-15

    • NAID

      40022663705

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Species identification of white false hellebore (Veratrum album subsp. oxysepalum) by loop-mediated isothermal amplification (LAMP)2019

    • Author(s)
      Kikkawa Hitomi S.、Aragane Masako、Tsuge Kouichiro
    • Journal Title

      Forensic Toxicology

      Volume: online first Issue: 2 Pages: 1-7

    • DOI

      10.1007/s11419-018-00461-y

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 次世代シーケンサーによるによる食用山菜との混合物中の有毒植物の検出手法の開発2021

    • Author(s)
      吉川ひとみ、柘浩一郎
    • Organizer
      DNA多型学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 科学警察研究所における植物資料のDNAを用いた鑑定の取り組み2019

    • Author(s)
      吉川 ひとみ
    • Organizer
      DNA鑑定学会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] バイケイソウのLAMP法による識別法の改良2019

    • Author(s)
      吉川ひとみ 荒金眞佐子
    • Organizer
      日本法医学会
    • Related Report
      2019 Research-status Report

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Published: 2017-04-28   Modified: 2023-01-30  

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