Eilers Elisabeth Johanna
Department of Chemical Ecology, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany.
Plants (Basel). 2021 Jul 30;10(8):1574. doi: 10.3390/plants10081574.
The chemodiversity between and within individuals of several plant species is remarkable and shaped by the local habitat environment and the genetic background. The forb (Geraniaceae) is globally distributed and partly invasive. This paper hypothesizes a high intra-specific and inter-individual chemical diversity in this species and investigates this by comparing the concentration and diversity of terpenoid compounds in different plant parts, i.e., leaves, blossoms and fruits. Plants were grown from seeds, originating from native range Bavaria (BY), Germany, and invaded range California (CA), USA, populations. In total, 20 different terpenoids were found, which occurred in distinct combinations and the patterns clustered into groups of distinct chemotypes for all plant parts. Several of the chemotypes were specific to plants of one region. The terpenoid compositions of different plant parts within individuals were highly correlated. Chemodiversity was higher in reproductive plant parts compared to the leaves, and higher in plants from BY compared to CA. This study highlights the intra-specific and inter-individual chemodiversity in , linked to its geographical origin, which may facilitate its invasion success but also calls for further investigation of the role of chemodiversity in invasive plants on interactions with the environment.
几种植物物种个体之间以及个体内部的化学多样性显著，且受当地栖息地环境和遗传背景的影响。老鹳草属植物（牻牛儿苗科）分布于全球，且部分具有入侵性。本文假设该物种具有较高的种内和个体间化学多样性，并通过比较不同植物部位（即叶子、花朵和果实）中萜类化合物的浓度和多样性来进行研究。这些植物由种子培育而来，种子分别来自德国巴伐利亚州（BY）的原生种群和美国加利福尼亚州（CA）的入侵种群。总共发现了20种不同的萜类化合物，它们以不同的组合出现，且所有植物部位的模式都聚集成不同化学型的组。其中几种化学型是某一地区植物所特有的。个体内不同植物部位的萜类化合物组成高度相关。与叶子相比，生殖植物部位的化学多样性更高，与来自CA的植物相比，来自BY的植物化学多样性更高。本研究突出了老鹳草属植物种内和个体间的化学多样性，这与其地理起源有关，这可能有助于其入侵成功，但也需要进一步研究化学多样性在入侵植物与环境相互作用中的作用。
