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Studies on micro-ecosystems in relation to changes of wood structures in fresh water and their application to improve permeability of wood

Research Project

Project/Area Number 10460077
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field 林産学
Research InstitutionAkita Prefectural University (1999-2000)
Akita Prefectural College of Agriculture (1998)

Principal Investigator

DOI Shuichi  Institute of Wood Technology, Akita Prefectural University, Professor, 木材高度加工研究所, 教授 (20279508)

Co-Investigator(Kenkyū-buntansha) IMAMURA Yuuji  WRI, Kyoto Univ., Professor, 木質科学研究所, 教授 (70151686)
ITOH Rhosuke  IWT, Akita Prefectural Univ., Researcher, 木材高度加工研究所, 研究員 (30310171)
OHTA Shosuke  IWT, Akita Prefectural Univ., Research fellow, 木材高度加工研究所, 流動研究員
YAMAUTI Hidefumi  IWT, Akita Prefectural Univ., Assistant professor, 木材高度加工研究所, 助手 (90279513)
KURIMOTO Yasuji  IWT, Akita Prefectural Univ., Assistant professor, 木材高度加工研究所, 助手 (60279510)
KOBAYASHI Yoshinori  IWT, Akita Prefectural Univ., Professor (00279506)
SASAKI Hikaru  IWT, Akita Prefectural Univ., Professor (50027158)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥10,500,000 (Direct Cost: ¥10,500,000)
Fiscal Year 2000: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1999: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1998: ¥6,200,000 (Direct Cost: ¥6,200,000)
KeywordsBacteria / Sugi / Gram negative / Gram positive / Ponding / Pit / Drying speed / Impregnability / ミクロフローラ / スギ / ピット / 浸透性 / 生態学的考察
Research Abstract

Objectives of this study are :
1, To clarify bacterial species that attack pit structures of wood in fresh water.
2, To clarify changes of wood cell walls during ponding.
3, To investigate the effect of ponding to improve permeability of wood.
Results :
Item 1 : These investigations were conducted in a fresh water pond and lab-scale cultural experiments using the water. Isolated bacteria were mainly gram-negatives ; they are generally dominants in water circumstances.
Item 2 : Several degradation patterns of pit tori of sugi wood cells walls were observed under microscopic investigation. Some bacterial species were isolated around the degraded tori. Potentials of these species to degrade pit tori were performed under lab-scale cultural studies.
Item 3 : At least, pit tori of sapwood portions were immediately degraded by microbes under lab-scale experiments. Permeabilities of woods submerged not only under lab-scale test but also in fresh water pond were improved. It was suggested that these phenomena were due to potent of bacterial enzyme systems.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] Doi et al.: "Enzyme Systems of Bacterial Isolates from Ponded Logs-Potentials of Pectin and/or Starch Degradation"International Research Group on Wood Preservation, IRG/WP/00-10378. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Doi et al.: "Ponding of Sugi (Cryptomeria japonica D.Don) Wood for Improving the Permeability-Ecosystem of Microbes in logs during ponding-, Chi-tou, Taiwan (ROC)"Proceedings of The International Conference on Effective Utilization of Plantation Timbers. 21-23,May. 101-108 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Doi et al.: "Improvement of wood permeability using a micro-biological process-Ecosystems of Microbes in ponded sugi logs"Proceeding of the 2^<nd> International Wood Science Seminar,. (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Doi et al.: "Enzyme Systems of Bacterial Isolates from Ponded Logs-Potentials of Pectin and/or Starch Degradation"International Research Group on Wood Preservation, IRG/WP/00-10378. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Doi et al.: "Enzyme Systems of Bacterial Isolates from Ponded Logs-Potentials of Pectin and/or Starch Degradation"International Research Group on Wood Preservation, IRG/WP/00-10378. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Doi,S: "Improvement of Wood Permeability Using a Micro-biological Process-Ecosystems of Microbes in Sugi (Cryptomeria japonica D.Don) Logs and Changes of Pit Membrane of Sugi Wood Samples after ponding New Horizons in Wood Anatomy"Y.S.Kim. 382-387 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Doi, s. et al.: "Enzyme Systems of Bacterial Isolates from Ponded Logs-Potentials of Pectin and /or Starch Degradation."International Research Group on Wood Preservation. IRG/WP/00-10378. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Doi, s. et al.: "Improvement of Wood Permeability Using a Micro-biological Process-Ecosystems of Microbes in Sugi (Cryptomeria japonica D.Don) Logs and Changes of Pit Membrane of Sugi Wood Samples after ponding."New Horizons in Wood Anatomy. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Doi et al.: "Enzyme Systems of Bacterial Isolates from Ponded Logs-Potentials of Pectin and/or Starch Degradation"International Research Group on Wood Preservation, IRG/WP/00-10378. (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Doi,S: "Improvement of Wood Permeability Using a Micro-biological Process-Ecosystems of Microbes in Sugi (Cryptomeria japonica D.Don) Logs and Changes of Pit Membrane of Sugi Wood Samples after ponding New Horizons in Wood Anatomy"Y.S.Kim. 382-387 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] S.Doi et al.: "Attraction of Steamed larch wood to termite(running TL)" Holztorschung. 52. 7-12 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Doi,Y.Kurimoto: "Durability of Sugi bark against wood decay fungi and a subterranean termite" Holz als Roh n.Werk.56. 178- (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Doi et al.: "Chemical changes in Wood components generated by steam treatment that affect termite feeding" Proceedings of the 4th Pac.Rim Bio based Compo.Synpo.247-256 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Doi et al.: "Attractive effects of steam-treatment of wood to termite feedings" 1998 Proc.of the korean Soc.Wood.Sei.& Tech.Ann.meeting. 13-23 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Doi et al.: "Attractive factors of steam-treated larch wood to termite feeding" Intnal.Res.Group on Wood Pre.Document. No10256. 1-9 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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