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1992 Fiscal Year Final Research Report Summary

Mechanisms of pathogenicity and induced resistance in pine wilt disease

Research Project

Project/Area Number 01440012
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 林学
Research InstitutionThe University of Tokyo

Principal Investigator

SUZUKI Kazuo  Univ. of Tokyo, Fac. of Agric., prof., 農学部, 教授 (80162931)

Co-Investigator(Kenkyū-buntansha) FUKUDA Kenji  ditto, Assis. Prof., 農学部, 助手 (30208954)
IDE Yuji  ditto, 農学部(林), 助教授 (90213024)
HOGETSU Taizo  ditto, Assoc. Prof., 農学部, 助教授 (10107170)
KATAGIRI Kazumasa  ditto, 農学部, 教授 (60211158)
SASAKI Satohiko  ditto, 農学部, 教授 (20196158)
Project Period (FY) 1989 – 1992
KeywordsPine wilt disease / Pathogenicity / Cavitation / Electrolyte leakage / Cellulase / Water stress / Induced resistance
Research Abstract

1. In the development of pine wilt disease, physiological changes such as photosynthesis and transpiration in leaves appear after the advancement of cavitation in the stem of pine seedling. And, at that time water stress come out in the seedling. 2. The extent of electrolytes leakage from the pine tissue is different among the variety of pine wood nematodes. And, It depends on the degree of pathogenicity of the pine wood nematodes. 3. Cellulase produced in the stem tissue after infection of the pine wood nematodes is originated from eucaryote. And, it causes the leakage of electrolytes in susceptible pine seedlings. 4. Induced resistance of pine seedlings appears only under the unstressed conditions after the inoculation of avirulent pine wood nematodes. 5. mechanisms of pine wilt disease are examined in details in various points of view. From the results, the outline of pine wilt caused by pine wood nematodes is elucidated.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Kamijo,A: "Isolation of template active RNA from the pine wood nematodes,Bursaphelenchus xylophilus" Bull.Tokyo Univ. For.86. 275-278 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 〓 〓: "材線虫処理組織からの電解質の漏出現象について" 日林論. 102. 351-352 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Fukuda,K.: "Photosynthesis and water status of pinewood nematode-infected pine seedlings" J.Jpn.For.Soc.92. 1-8 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Fukuda,K.: "Cavitation and cytological changes in xylem of pine seedlings in oculated with virulent and avirulent isolates of Bursaphelenchus xylophilus and B.mucronatus." J.Jpn.For.Soc.74. 289-299 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鈴木 和夫: "マツ枯損に関する萎凋枯死機構" 森林防疫. 41. 59-64 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kamijo,A., Kjima,K., Masumori,M., and Sasaki,S: "Isolation of template active RNA from the pine wood nematodes, Bursaphelenchus xylophilus." Bull.Tokyo Univ.For. 86. 275-278 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Zheng,Ye., Fukuda,K., Hogetsu,T., and Suzuki,K: "Electrolytes leakage from Japanese black pine (Pinus thunbergii) tissue inoculated with pine wood nematode (Bursaphelenchus xylophilus)." Ann.Meet.Jpn.For.Soc. 102. 351-352 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fukuda,K., Hogetsu,T., and Suzuki,K: "Photosynthesis and water status of pine wood nematode-infected pine seedlings." J.Jpn.For.Soc.74. 1-8 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fukuda,K., Hogetsu,T., and Suzuki,K: "Cavitation and cytological changes in xylem of pine seedlings inoculated with virulent and avirulent isolates of Bursaphelenchus xylophilus and B. mucronatus." J.Jpn.For.Soc.74. 289-299 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suzuki,K: "Mechanisms of pine wilt disease." Forest Pest. 41. 59-64 (1992)

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

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Published: 1994-03-24  

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