Origin of unusual tension stress in the aerial root of Ficus species-Structure and biomechanics of strangler trees

榕树气生根异常张力的起源——绞杀树的结构与生物力学

• 批准号: 15405015
• 负责人: YAMAMOTO Hiroyuki
• 金额: $ 6.53万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15405015/
• 关键词: Ficus elastica Roxb.; Ficus benjamina Lour.; gelatinous fiber; plant biomechanics; growth stress; strangler tree; aerial root; plant habitat; 引張あて材; 負重力屈性; イチジク科; 生存戦略; 引張の成長応力; Ficus; FICUS; Ficus elastica; ミクロフィブリル; 解放ひずみ

In this study, the survival strategy of strangler plants was investigated from the viewpoint of tissue mechanics. Release strain measurements were conducted on the aerial roots of Ficus benjamina Lour. and Ficus elastica Roxb. to understand stress generation in aerial roots. Regardless of whether the roots are small roots that are directly attached to the ground (Type I), small roots that have merged with other roots without reaching the ground (Type II), or large roots that are directly attached to the ground (Type III), all gave negative strain values indicating that they were under tensile stress prior to measurements. Such strains were inversely affected by the strain gauge distance from the root attachment (either to the ground or to other roots) and by the root diameter. Tensile stresses emanated from the gelatinous fibers found near the pith of the roots. The gelatinous layer in aerial root showed a typical morphology and strength as observed in the tension wood xylem of the stem.

本研究从组织力学的观点探讨扼杀植物的生存策略。对小叶榕的气生根进行了释放应变测定。和橡皮树Roxb。了解气生根中的应力产生。无论根是直接附着在地面上的小根（I型）、与其他根合并而没有到达地面的小根（II型）还是直接附着在地面上的大根（III型），都给出了负应变值，表明它们在测量之前处于拉伸应力下。这种应变的负向影响的应变计距离从根附件（无论是地面或其他根）和根直径。张应力来自于根髓附近的凝胶状纤维。气生根中的凝胶层表现出与茎中的张力木木质部相同的形态和强度。

项目成果

The influence of boiling and drying treatments on the behaviors of tension wood with gelatinous layers in Zelkova serrata.

煮沸和干燥处理对锯叶榉胶状层张力木材行为的影响。

• 发表时间: 2007
• 期刊: Journal of Wood Science 53
• 作者: Abe;K.
• 通讯作者: K.

Influence of structure and chemical composition on thermal softening of palasan canes (Calamus merrillii).

结构和化学成分对帕拉桑藤（Calamus merrillii）热软化的影响。

• 发表时间: 2005
• 期刊: IAWA Journal 26
• 作者: Abasolo;W.P.;Yoshida;M.;Yamamoto;H.;Okuyama;T.
• 通讯作者: T.

Stress generation in aerial roots of Ficus elastica.

弹性榕气生根的应力产生。

• 发表时间: 2009
• 期刊: IAWA Journal 30・2
• 作者: Abasolo;W. P.;Yoshida;M.;Yamamoto;H.;Okuyama;T.
• 通讯作者: T.

Behaviors of tension wood with gelatinous layers in Zelkova serrata.

榉树中具有凝胶层的张力木材的行为。

• 发表时间: 2004
• 作者: Abe;K.;Arakawa;Y.;Yamamoto;H;Okuyama;T.
• 通讯作者: T.

The influences of boiling and drying treatments on the behaviors of tension wood with gelatinous layers in Zelkova serrata

煮沸和干燥处理对锯叶榉胶层张力木性能的影响

• 发表时间: 2007
• 期刊: Journal of Wood Science Vol. 53
• 作者: Abe . K.;Yamamoto;H.
• 通讯作者: H.