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

淡水中木材结构变化相关的微生态系统研究及其在提高木材渗透性方面的应用

• 批准号: 10460077
• 负责人: DOI Shuichi
• 金额: $ 6.72万
• 依托单位: Akita Prefectural University (1999-2000)Akita Prefectural College of Agriculture (1998)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10460077/
• 关键词: Bacteria; 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

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.

本研究的目的是：1、阐明淡水中攻击木材孔结构的细菌种类。2、阐明积水期间木材细胞壁的变化。3、研究积水对改善木材渗透性的影响。结果：第 1 项：这些调查是在淡水池塘和使用该水的实验室规模培养实验中进行的。分离细菌以革兰氏阴性菌为主；它们通常在水环境中占主导地位。项目2：在显微镜下观察到杉木细胞壁的纹孔的几种退化模式。在退化的花托周围分离出一些细菌种类。这些物种降解坑托里的潜力是在实验室规模的培养研究下进行的。项目3：至少，边材部分的坑托里在实验室规模的实验下立即被微生物降解。不仅在实验室规模的测试中，而且在淡水池塘中浸没的木材的渗透性都得到了改善。有人认为这些现象是由于细菌酶系统的作用所致。

项目成果

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.

Doi 等人：“台湾池头的杉树（Cryptomeria japonica D.Don）积水可改善积水期间原木中微生物的渗透性生态系统（中华民国）”有效利用人工林国际会议记录

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)

Doi 等人：“利用微生物过程改善木材渗透性 - 池塘杉原木中的微生物生态系统”第二届国际木材科学研讨会论文集。

S.Doi,Y.Kurimoto: "Durability of Sugi bark against wood decay fungi and a subterranean termite" Holz als Roh n.Werk.56. 178- (1998)

S.Doi,Y.Kurimoto：“杉树皮对木材腐烂真菌和地下白蚁的耐久性”Holz als Roh n.Werk.56。

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)

Doi等人：“从池塘原木中分离细菌的酶系统-果胶和/或淀粉降解的潜力”国际木材防腐研究组，IRG/WP/00-10378。

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)

土井，S.