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Analysis of an infection behavior by chemotactic regulation of phytopathogenic bacteria

Research Project

Project/Area Number 26660035
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Plant protection science
Research InstitutionOkayama University

Principal Investigator

ICHINOSE Yuki  岡山大学, 大学院環境生命科学研究科, 教授 (50213004)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsタバコ野病病菌 / 走化性 / MCP / 植物ホルモン / 有機酸 / タバコ野火病菌 / ジャスモン酸
Outline of Final Research Achievements

Plant pathogenic bacterium, Pseudmonas syringae has about 45 genes encoding chemotaxis sensor protein (methyl-accepting chemotaxis protein, MCP). This indicates that P. syringae responds to a variety of chemoattractants. In this study, we revealed that highly motile phytopathogenic bacterium, P. syringae pv. tabaci 6605 (Pta6605) showed positive chemotactic response to 10 compounds including kinetin. P. aeruginosa, a closely related bacterium to P. syringae, has only about 13 mcp genes. Thus we selected 27 mcp genes that are specific to P. syringae and not existed in P. aeruginosa. We generated mutant strains which lost each 27 mcp gene in Pta6605. Although most of the mcp mutants respond to kinetin as well as WT strains, only mutants for mcp4, mcp15b and mcp24 reduced the responsibility. These results indicate that these MCPs seem to be sensor proteins required for kinetin perception.

Report

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

    (2 results)

All 2015

All Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] Pseudomonas syringae pv. tabaci 6605の走化性の解析2015

    • Author(s)
      山田 創・杉原由佳・山本幹博・ 松井英譲・能年義輝・豊田和弘・ 一瀬勇規
    • Organizer
      平成27年度日本植物病理学会感染生理談話会
    • Place of Presentation
      松山
    • Year and Date
      2015-08-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] Global regulation of virulence-related genes in Pseudomonas syringae pv. tabaco2015

    • Author(s)
      Yuki CHINOSE & Fumiko TAGUCHI
    • Organizer
      9th International Conference on Pseudomonas syringae and Related Pathogens
    • Place of Presentation
      Malaga, Spain
    • Year and Date
      2015-06-02
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2014-04-04   Modified: 2017-05-10  

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