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Exploration and identification of functional genes from subseafloor microorganisms based on substrate response phenomena

Research Project

Project/Area Number 20K06828
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 45040:Ecology and environment-related
Research InstitutionKochi University

Principal Investigator

WAKAMATSU Taisuke  高知大学, 教育研究部総合科学系生命環境医学部門, 准教授 (60597938)

Co-Investigator(Kenkyū-buntansha) 諸野 祐樹  国立研究開発法人海洋研究開発機構, 超先鋭研究開発部門(高知コア研究所), 主任研究員 (30421845)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords遺伝子 / DNA / 海底下微生物 / 基質応答 / ハロゲン化合物 / 金属イオン / メタゲノム
Outline of Research at the Start

海底下微生物由来機能性遺伝子の探索と同定のため、現場環境条件から導き出される基質誘導をアクセスの扉とする基質誘導性遺伝子発現解析法SIGEXを適応する。具体的には、様々な海底下コア試料から作製したSIGEXライブラリーに対し海底下地層環境を代表する物質、つまり有機ハロゲン化合物やメタン系炭化水素、D-アミノ酸等を嫌気条件下ならびに好気条件下で基質として添加し、発現応答を示した遺伝子断片を高速スクリーニングする。

Outline of Final Research Achievements

First, two metagenomic SIGEX libraries were constructed using evoglow gene as a reporter gene for subseafloor sediments. Next, SIGEX screening using five aromatic compounds (benzoate, 3-chlorobenzoate, 3-hydroxybenzoate, phenol, and 2,4-dichlorophenol) under aerobic and anaerobic conditions revealed significant differences in the inducible clone ratios under these conditions. 3-Chlorobenzoate and 2,4-dichlorophenol led to a higher induction ratio than that for the other non-chlorinated aromatic compounds under both aerobic and anaerobic conditions. After the further screening of induced clones, four clones induced by 3-chlorobenzoate only under anaerobic conditions were isolated and characterized. Furthermore, 408 clones were isolated that may respond to 2,4-dichlorophenol, MnCl2, or NiCl2 under aerobic conditions.

Academic Significance and Societal Importance of the Research Achievements

evoglowをレポーター遺伝子とすることで好気/嫌気両条件下でSIGEX応答解析が可能になった。得られた基質応答DNA断片はほぼ(機能)未知遺伝子群のみから構成されており、バイオインフォマティクスなど他の方法では取得不可能であった。本研究成果により海底下生命圏のみならず他の生命圏にも存在する機能未知遺伝子のSIGEX法を用いた探索や同定の普及に大きく繋がると考える。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (7 results)

All 2022 2021 2020

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

  • [Journal Article] Construction of Aerobic/Anaerobic-Substrate-Induced Gene Expression Procedure for Exploration of Metagenomes From Subseafloor Sediments.2022

    • Author(s)
      Taisuke Wakamatsu, Saki Mizobuchi, Fumiaki Mori, Taiki Futagami, Takeshi Terada, Yuki Morono
    • Journal Title

      Frontiers in Microbiology

      Volume: 12

    • DOI

      10.3389/fmicb.2021.726024

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Simple In-liquid Staining of Microbial Cells for Flow Cytometry Quantification of the Microbial Population in Marine Subseafloor Sediments2021

    • Author(s)
      Mori Fumiaki、Nishimura Tomoya、Wakamatsu Taisuke、Terada Takeshi、Morono Yuki
    • Journal Title

      Microbes and Environments

      Volume: 36 Issue: 3 Pages: n/a

    • DOI

      10.1264/jsme2.ME21031

    • NAID

      130008077315

    • ISSN
      1342-6311, 1347-4405
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 海底下堆積物由来メタゲノムを対象とした好気/嫌気両条件下で実施可能な基質誘導性遺伝子発現解析法の開発2021

    • Author(s)
      若松泰介,溝渕早紀,森郁晃,二神泰基,寺田武志,諸野祐樹
    • Organizer
      日本微生物生態学会第34回大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Exploration of genomic function of subseafloor sediments through aerobic/anaerobic-Substrate-Induced Gene Expression.2021

    • Author(s)
      Yuki Morono, Taisuke Wakamatsu, Saki Mizobuchi, Fumiaki Mori, Taiki Futagami and Takeshi Terada
    • Organizer
      AGU Fall Meeting 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 好気/嫌気両条件下で実施可能な基質誘導性遺伝子発現解析(SIGEX)法の開発と海底下堆積物ゲノムでの実証2021

    • Author(s)
      諸野祐樹, 若松泰介, 溝渕早紀, 森郁晃, 二神泰基, 寺田武志
    • Organizer
      極限環境生物学会2021年度 (第22回)年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 簡易的染色手法とフローサイトメトリーによる海底下微生物の細胞カウント手法2021

    • Author(s)
      森郁晃,西村知泰,若松泰介,寺田武志,諸野祐樹
    • Organizer
      日本微生物生態学会第34回大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Screening of genes from subseafloor sediments and Co-rich ferromanganese crust using substrate-induced gene expresiion (SIGEX) method.2020

    • Author(s)
      吉田 晶、若松 泰介、森澤 高至、寺田 武志、石井 俊一、諸野 祐樹
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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