The chemotypes of Ethiopian Echinops kebericho accessions

IF 2 4区生物学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY

Biochemical Systematics and Ecology Pub Date : 2025-08-18 DOI:10.1016/j.bse.2025.105111

Bekri Melka Abdo , Bizuayehu Tesfaye Asfaw , M. Iqbal Choudhary , Sammer Yousuf , Solomon Abate Mekonnen , Wendawek Abebe Mengesha

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引用次数: 0

Abstract

The chemotype of essential oils plays a crucial role in classifying plant subspecies with similar morphological traits and optimizing their biological activities. This study characterized and classified the chemotype of 45 accessions of Echinops kebericho, collected from different geographical areas of Ethiopia, based on 15 major chemical constituents of their root essential oil. The chemical composition was analyzed using GC-MS, and chemotype classification was performed through multivariate statistical analysis. Principal component analysis and hierarchical clustering formed the accessions into four groups, leading to the identification of three distinct chemotypes. Chemotype A was characterized by a high concentration of dehydrocostus lactone, β-guaiene, and δ-cadinene, while chemotype B contained dehydrocostus lactone, β-guaiene, and caryophyllene oxide. Chemotype C, designated as the dehydrocostus lactone type, was dominated by dehydrocostus lactone. The north Ethiopia kebericho population was uniformly classified as chemotype C, whereas the other populations exhibited chemotypic diversity, encompassing all three chemotypes. These findings highlight significant chemical variability among kebericho accessions, which originated from various geographical locations of Ethiopia. This chemophenetic approach provides a valuable foundation for the targeted improvement, sustainable production, utilization, and conservation of kebericho plant.

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衣索比亚棘猴材料的化学型分析

精油的化学型在分类具有相似形态特征的植物亚种和优化其生物活性方面起着至关重要的作用。本研究基于15种主要化学成分，对采自埃塞俄比亚不同地理区域的45份石竹（Echinops kebericho）进行了化学型鉴定和分类。采用GC-MS分析化学成分，采用多元统计分析进行化学型分类。主成分分析和层次聚类将这些材料分为四组，从而鉴定出三种不同的化学型。化学型A含有高浓度的脱氢木香内酯、β-愈创木烯和δ-癸二烯，而化学型B含有脱氢木香内酯、β-愈创木烯和氧化石竹烯。化学型C为脱氢木香内酯型，以脱氢木香内酯为主。埃塞俄比亚北部kebericho种群被统一归类为C型，而其他种群则表现出化学型多样性，包括所有三种化学型。这些发现突出了产自埃塞俄比亚不同地理位置的kebericho材料之间显著的化学差异。这一化学表型分析方法为kebericho植物的定向改良、可持续生产、利用和保护提供了有价值的基础。

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来源期刊

Biochemical Systematics and Ecology 生物-进化生物学

CiteScore

3.00

自引率

12.50%

发文量

147

审稿时长

43 days

期刊介绍： Biochemical Systematics and Ecology is devoted to the publication of original papers and reviews, both submitted and invited, in two subject areas: I) the application of biochemistry to problems relating to systematic biology of organisms (biochemical systematics); II) the role of biochemistry in interactions between organisms or between an organism and its environment (biochemical ecology). In the Biochemical Systematics subject area, comparative studies of the distribution of (secondary) metabolites within a wider taxon (e.g. genus or family) are welcome. Comparative studies, encompassing multiple accessions of each of the taxa within their distribution are particularly encouraged. Welcome are also studies combining classical chemosystematic studies (such as comparative HPLC-MS or GC-MS investigations) with (macro-) molecular phylogenetic studies. Studies that involve the comparative use of compounds to help differentiate among species such as adulterants or substitutes that illustrate the applied use of chemosystematics are welcome. In contrast, studies solely employing macromolecular phylogenetic techniques (gene sequences, RAPD studies etc.) will be considered out of scope. Discouraged are manuscripts that report known or new compounds from a single source taxon without addressing a systematic hypothesis. Also considered out of scope are studies using outdated and hard to reproduce macromolecular techniques such as RAPDs in combination with standard chemosystematic techniques such as GC-FID and GC-MS.