Chemical Studies on Plant-Plant Interactions of Eucalyptus and Mentha Species

桉树和薄荷属植物间相互作用的化学研究

• 批准号: 60560124
• 负责人: NISHIMURA Hiroyuki
• 金额: $ 1.28万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60560124/
• 关键词: Allelopathy; Plant growth inhibitor; Terpenoid; Eucalyptus; Mentha; Structure-activity relationship

Chemical interferences by one plant with seed germination and seedling growth of another higher plant in nature are called as allelopathy. Since Molisch defined the term "allelopathy" in 1937, many scientists have been concerned with the exploration and exploitation of allelochemics. It is well known that some Eucalyptus species are surrounded by bare (grass-free) ground which are formed by the allelopathic effect in a plant ecosystem.The allelochemics of E. citriodora (lemon-scented gum) has been isolated from the leaves and identified as p-menthane-3,8-diols (cis and trans). Regio-isomers and ester derivatives of p-menthane-3,8-diols are prepared and bio-assayed on germination and growth inhibitions against several higher plants. As a results, it was elucidated that a distance between two oxygens of OH groups and a length of hydrophobic ester groups were very significant for the inhibitory activity. Furthermore, as the allelochemics of E. camaldulensis, E. delegatensis, E. pauciflora and E. viminalis, interesting terpenoids and aromatic compounds were identified.On the other hand, an allelochemics of a spearmint plant such as Mentha spicata was examined. (-)-Carvone which is a major component of spearmint oil exhibited very weak inhibition against germinating seeds and seeding of weeds. However, there is a possibility that the transformation products of (-)-carvone by microorganisms in soil may interfere with other plants. The conversion of (-)-carvone by Streptomyces species gave rise to a novel monoterpene named (+)-bottrospicatol which exhibited very strong inhibitory activity against several grasses. Studies on structure-activity relationships of allelochemics are in progress.

在自然界中，一种植物对另一种高等植物种子萌发和幼苗生长的化学干扰称为化感作用。自1937年Molisch定义“化感作用”一词以来，许多科学家一直关注化感物质的探索和利用。众所周知，某些桉树种周围是光秃的（无草）地面，这是植物生态系统中的化感作用所形成的。Citriodora（柠檬香胶）已经从叶子中分离出来，并被鉴定为对薄荷烷-3，8-二醇（顺式和反式）。制备了对-薄荷烷-3，8-二醇的区域异构体和酯衍生物，并对几种高等植物的发芽和生长抑制进行了生物测定。结果表明，OH基团的两个氧之间的距离和疏水酯基的长度对于抑制活性是非常显著的。此外，E. camaldulensis、E. delegatensis、E. pauciflora和E.此外，还对留兰香植物留兰香的化感物质进行了研究。（-）-香芹酮是留兰香油的主要成分，对种子萌发和杂草幼苗的抑制作用很弱。然而，土壤中微生物对（-）-香芹酮的转化产物可能会干扰其他植物。（-）-香芹酮经链霉菌属转化产生一种新的单萜化合物，命名为（+）-bottrospicatol，它对几种禾本科植物表现出很强的抑制活性。化感物质的构效关系研究正在进行中。

项目成果

Hiroyuki NISHIMURA: "Studies on Highly Effective Cultivation and Integrated Utilization of Eucalyptus citriodora" Journal of the Society of Tropical Resources Technologists. 2. 1-11 (1987)

Hiroyuki NISHIMURA：“柠檬桉高效栽培与综合利用研究”热带资源技术学会杂志。

西村弘行(編): "未来の生物資源ユーカリ" 内田老鶴圃, 304 (1987)

Hiroyuki Nishimura（编辑）：“未来生物资源桉树”Uchida Rokakuba，304（1987）

西村弘行: 日本農芸化学会誌. 60. 19-29 (1986)

Hiroyuki Nishimura：日本农业化学学会杂志 60. 19-29 (1986)

Hiroyuki NISHIMURA: "Studies on Plant Flavor Chemistry and Biological Activity" Nippon Nogeikagaku Kaishi. 60. 19-29 (1986)

Hiroyuki NISHIMURA：“植物风味化学和生物活性的研究”Nippon Nogeikagaku Kaishi。

西村弘行: 南方資源利用技術研究会誌. 2. 1-11 (1986)

Hiroyuki Nishimura：南方资源利用技术研究组杂志。2. 1-11 (1986)。