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イネにおけるエリシター化合物を利用した天敵誘引物質の放出制御技術の開発

Research Project

Project/Area Number 13F03379
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Ecology/Environment
Research InstitutionOkayama University

Principal Investigator

Ivan Galis (IVAN Galis) (2014-2015)  岡山大学, 資源植物科学研究所, 教授 (90360502)

GALIS Ivan (2013)  岡山大学, 資源植物科学研究所, 教授

Co-Investigator(Kenkyū-buntansha) MOHAMMED ISLAM  岡山大学, 資源植物科学研究所, 外国人特別研究員
MOHAMMED Islam  岡山大学, 資源植物科学研究所, 外国人特別研究員
MOHAMMED I.s.  岡山大学, 資源植物科学研究所, 外国人特別研究員
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2015: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2014: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2013: ¥500,000 (Direct Cost: ¥500,000)
Keywordsrice / sorghum / defense / volatiles / natural enemies / diurnal cycle / transcription / priming / イネ / 揮発性成分 / 植食性昆虫 / ソルガム / エリシター / プライミング
Outline of Annual Research Achievements

In FY 27, we continued measuring volatile organic compound (VOC) emissions from rice (Oryza sativa) and sorghum (Sorghum bicolor). In both plants, we determined whole spectrum of VOCs dominated by terpenoids, aromatic compounds and green leaf volatiles. In both monocot species, the VOCs were quite similar, dominated by sesquiterpenes and monoterpens. Herbivore feeding and diurnal conditions were main factors influencing VOC emissions, which was further affected by chemical inducers (BTH) and plant genotype. In order to understand the molecular basis of differential emissions of VOCs from monocot plants, both under control and stress conditions (herbivory, wounding), we initiated cloning and investigated gene expression of those genes directly involved in VOC biosynthesis. In order to correlate differential VOCs with plant indirect defense against insects, we also monitored sorghum plants of different genetic backgrounds (resulting in differential VOCs), and investigated their herbivore damage under field conditions. Although direct relationship still needs to be established, sorghum plants of BTx602 origin, which had higher emissions of VOCs, had lower damage from European stem borer (Ostrinia nubilalis) in the field, compared to susceptible NOG genotype (high damage vs. low VOCs). We could propose hypothesis that high VOCs in BTx602 may help these plants to recruit a higher number of natural enemies of O. nubilalis, and thus reduce the successful establishment of this notorious pest on these plants. Several publications summarizing our results are now under preparation.

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (4 results)

All 2016 2015

All Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] 植食性昆虫エリシター組成に依存したイネの特異的防御応答2016

    • Author(s)
      新屋友規・Islam Sobhy・北條優子・三宅純司・出﨑能丈・渋谷直人・Galis Ivan
    • Organizer
      2016 Annual Meeting of the Phytopathological Society of Japan
    • Place of Presentation
      Okayama, Japan
    • Year and Date
      2016-03-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] Direct and indirect defense against herbivores in rice2016

    • Author(s)
      Ivan Galis, Islam S. Sobhy, Atsushi Miyake, Kimiaki Tanabe, Yuko Hojo, and Tomonori Shinya
    • Organizer
      The 57th Annual Meeting of the Japanese Society of Plant Physiologists (JSPP)
    • Place of Presentation
      Morioka, Japan
    • Year and Date
      2016-03-18
    • Related Report
      2015 Annual Research Report
  • [Presentation] The diurnal emission pattern of constitutive and induced rice volatiles2015

    • Author(s)
      Islam S. Sobhy, Atsushi Miyake, Ivan Galis
    • Organizer
      The 31st annual meeting of the ISCE (International Society of Chemical Ecology)
    • Place of Presentation
      Stockholm, Sweden
    • Year and Date
      2015-06-29
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characterization of herbivore-induced rice volatiles under real and mimic herbivory2015

    • Author(s)
      Sobhy I.S., Miyake A., Galis I.
    • Organizer
      Annual Meeting of JSPP 2015
    • Place of Presentation
      Tokyo
    • Year and Date
      2015-03-16 – 2015-03-18
    • Related Report
      2014 Annual Research Report

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Published: 2014-01-29   Modified: 2024-03-26  

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