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2002 Fiscal Year Final Research Report Summary

Study on host-recognition mechanism of root parasitic weeds

Research Project

Project/Area Number 12460049
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Bioproduction chemistry/Bioorganic chemistry
Research InstitutionUTSUNOMIYA UNIVERSITY

Principal Investigator

YONEYAMA Koichi  Utsunomiya University, Center for Research on Wild Plants, Professor, 野生植物科学研究センター, 教授 (00114174)

Co-Investigator(Kenkyū-buntansha) NATSUAKI Tomohide  Utsunomiya University, Faculty of Agriculture, Professor, 農学部, 教授 (10134264)
OGASAWARA Masaru  Utsunomiya University, Center for Research on Wild Plants, Associate Professor, 野生植物科学研究センター, 助教授 (40194419)
TAKEUCHI Yasutomo  Utsunomiya University, Center for Research on Wild Plants, Professor, 野生植物科学研究センター, 教授 (90008003)
SASAKI Izumi  Oyama National College of Technology, Materials Chemistry and Bioengineering, 物質工学科, 助手 (70270220)
YOKOTA Takao  Teikyo University, Faculty of Science and Technolgy, Professor, 理工学部, 教授 (40011986)
Project Period (FY) 2000 – 2002
Keywordsroot parasitic weeds / germination stimulants / haustorium inducing compounds / host recognition mechanism / cell wall degrading enzymes / ethylene biosynthesis / genetic analysis / LC / MS
Research Abstract

Germination stimulants produced by various hosts of root parasitic weeds have been examined. For example, soybean and Arabidopsis were found to produce orobanchol. In addition, production of orobanchol by red clover roots has been quantified by a newly developed LC/MS/MS method. Some hosts, including tomato, pea, and sorghum were found to produce novel strigolactones. ACC synthase and ACC oxidase genes were cloned from Orobanche minor, Although Orobanche ACC oxidase gene had a high homology with genes from other plants, Orobanche ACC synthase gene contained several stop codons in its N-terminal region and thus may not be functional. Among cell wall degrading enzymes of O. Minor, beta-glucosidase was most abundant. This enzyme may be involved in penetration into host roots by degrading cell walls and also by inhibiting host defense system.

  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] K.Yoneyama et al.: "Production of clover broomrape seed germination stimulants by red clover root requires nitrate but is inhibited by phosphate and ammonium"Physiologia Plantarum. 112(1). 25-30 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] D.Sato et al.: "Analysis of strigolactones, germination stimulants for Striga and Orobanche, by high-performance liquid chromatography/tandem mass spectrometry"Journal of Agricultural and Food Chemistry. 51(6). 1162-1168 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 米山 弘一(分担執筆): "次世代の農薬開発-ニューナノテクノロジーによる探索と創製-"日本農薬学会編・ソフトサイエンス社. 316 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Koichi Yoneyama, Yasutomo Takeuchi, Takao Yokota: "Production of clover broomrape seed germination stimulants by red clover root requires nitrate but is inhibited by phosphate and ammonium"Physiologia Plantarum. 112(1). 25-30 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Daisuke Sato, Ayman A. Awad, Sang Heon Chae, Takao Yokota, Yukihiro Sugimoto, Yasutomo Takeuchi, Koichi Yoneyama: "Analysis of strigolactones, germination stimulants for Striga and Orobanche, by high-performance liquid chromatography / tandem mass spectrometry"Journal of Agricultural and Food Chemistry. 51(5). 1162-1168 (2003)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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