• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Potential contribution of extracellular plasmids to horizontal gene transfer

Research Project

Project/Area Number 26892024
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Applied microbiology
Research InstitutionToyama Prefectural University

Principal Investigator

TAKAHASHI Yurika  富山県立大学, 工学部, 助教 (30732698)

Project Period (FY) 2014-08-29 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords細胞外DNA / プラスミド / 富山湾
Outline of Final Research Achievements

Using two filters to remove cells and viral particles followed by several steps of concentration and purification, we succeeded in obtaining metagenome sequences of extracellular DNA from three surface seawater and four marine sediment sampled at different sites on Toyama Bay, Japan. G+C content and oligonucleotide frequency profiles showed that the composition of extracellular DNAs from seawater were similar to the viral DNA isolated from the same sample, while those from sediments were similar to the intracellular DNA. The ratio of reads showing similarity (blastn, e-value <1e-5) with already-known plasmid (9225 sequences in RefSeq v74) were ranged from 0.2-1.0%, and had some correlation with those having similarity with bacterial sequence (3-16%). Some plasmid-derived sequences were only detected in extracellular DNA, indicating that the composition of extracellular plasmid is not the same with that of intracellular plasmid.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Annual Research Report
  • Research Products

    (7 results)

All 2016 2015 Other

All Presentation (5 results) (of which Invited: 1 results) Remarks (2 results)

  • [Presentation] 遺伝子水平伝播への細胞外プラスミドの寄与の可能性2016

    • Author(s)
      高橋裕里香, 中野椋太, 宮西謙弥, 畠俊郎, 西田洋巳
    • Organizer
      日本農芸化学会2016年度大会
    • Place of Presentation
      札幌
    • Year and Date
      2016-03-30
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] 富山湾海水中の微生物相・遺伝子多様性の評価のための細胞内DNA抽出方法の確立2016

    • Author(s)
      宮西謙弥, 中野椋太, 磯貝泰弘, 畠俊郎, 西田洋巳, 高橋裕里香
    • Organizer
      日本農芸化学会2016年度大会
    • Place of Presentation
      札幌
    • Year and Date
      2016-03-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] 富山湾海底堆積物中の微生物相・遺伝子多様性の評価のための細胞内DNA抽出方法の確立2016

    • Author(s)
      中野椋太, 宮西謙弥, 磯貝泰弘, 畠俊郎, 西田洋巳, 高橋裕里香
    • Organizer
      日本農芸化学会2016年度大会
    • Place of Presentation
      札幌
    • Year and Date
      2016-03-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] 細胞外プラスミド研究の展望2015

    • Author(s)
      高橋裕里香
    • Organizer
      第2回東京大学・富山県立大学生物工学セミナー
    • Place of Presentation
      東京
    • Year and Date
      2015-11-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] 富山湾底泥中の細胞外プラスミドの分離2015

    • Author(s)
      中野椋太, 宮西謙弥, 高橋裕里香, 畠俊郎, 西田洋巳
    • Organizer
      第9回日本ゲノム微生物学会年会
    • Place of Presentation
      神戸
    • Year and Date
      2015-03-06
    • Related Report
      2014 Annual Research Report
  • [Remarks]

    • URL

      http://researchmap.jp/yurikatakahashi

    • Related Report
      2015 Annual Research Report
  • [Remarks]

    • URL

      http://researchmap.jp/yurikatakahashi

    • Related Report
      2014 Annual Research Report

URL: 

Published: 2014-09-09   Modified: 2017-05-10  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi