生态因素对拉脱维亚、立陶宛和乌克兰鸢尾属植物中酚类化合物积累的影响。
Effect of ecological factors on the accumulation of phenolic compounds in Iris species from Latvia, Lithuania and Ukraine.
机构信息
Department of Botany, National University of Pharmacy, Valentynivska Str. 4, Kharkiv, Ukraine.
Nature Research Centre, Institute of Botany, Žaliųjų Ežerų Str. 49, Vilnius, Lithuania.
出版信息
Phytochem Anal. 2020 Sep;31(5):545-563. doi: 10.1002/pca.2918. Epub 2020 Jan 21.
INTRODUCTION
It is important to conduct studies on the influence of environmental factors on the accumulation of secondary metabolites in plants, as well as the cultivation of plants and harvesting of their raw material.
OBJECTIVE
In this study, we examined the influence of habitat types, soil composition, climatic factors and altitude on the content of phenolic compounds in Iris species from different populations in Latvia, Lithuania and Ukraine.
METHODOLOGY
According to high-performance liquid chromatography (HPLC) analysis, 25 compounds (flavonoids, isoflavonoids, isoflavonoid glucosides, xanthones, phenolcarboxylic acids) were identified in the methanol extracts of 16 samples of Iris rhizomes. The quantitative data were further analysed by principal component analysis (PCA) to reveal the impact of environmental factors on the accumulation of compounds in plants.
RESULTS
Iris pseudacorus from Latvia and Lithuania had a more diverse composition of phenolic compounds than samples from Ukraine. Sampled plants of the Iris subg. Iris had a higher content of the analysed compounds than those of Iris subg. Limniris. PCA results showed that the levels of phenolic compounds in Iris rhizomes were influenced by the content of soil nutrients. The phosphorus and potassium content had a significant impact on the levels of phenolic compounds, whereas the impact of nitrogen content was not significant. Meteorological factors had a small impact; however, sunshine duration had a significant positive effect and the amount of precipitation had a significant negative impact.
CONCLUSION
The results of this study suggest that rhizomes of Iris species may be an important source of pharmacologically active compounds such as flavonoids, isoflavonoids and xanthones. Studies on the effect of environmental factors on the production and accumulation of secondary metabolites in Iris species are important because they contribute to knowledge of quantitative parameters of secondary metabolites in medicinal plants and could be employed for the cultivation and harvesting of raw material for medicinal purposes.
简介
研究环境因素对植物次生代谢产物积累的影响，以及植物的栽培和原料收获，这一点很重要。
目的
本研究考察了生境类型、土壤组成、气候因素和海拔高度对拉脱维亚、立陶宛和乌克兰不同种群的鸢尾属植物中酚类化合物含量的影响。
方法
根据高效液相色谱（HPLC）分析，从 16 个鸢尾属根茎甲醇提取物中共鉴定出 25 种化合物（类黄酮、异黄酮、异黄酮苷、紫檀烷酮、酚羧酸）。对定量数据进行主成分分析（PCA），以揭示环境因素对植物中化合物积累的影响。
结果
与来自乌克兰的样本相比，来自拉脱维亚和立陶宛的鸢尾属植物含有更多种类的酚类化合物。所采样的鸢尾属 Iris 亚属植物比鸢尾属 Limniris 亚属植物含有更高水平的分析化合物。PCA 结果表明，鸢尾属根茎中的酚类化合物水平受土壤养分含量的影响。磷和钾含量对酚类化合物水平有显著影响，而氮含量的影响不显著。气象因素的影响较小；然而，日照时间有显著的正效应，降水量有显著的负效应。
结论
本研究结果表明，鸢尾属植物的根茎可能是具有药理活性的化合物（如类黄酮、异黄酮和紫檀烷酮）的重要来源。研究环境因素对鸢尾属植物次生代谢产物产生和积累的影响很重要，因为这有助于了解药用植物次生代谢产物的定量参数，并可用于药用原料的栽培和收获。
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