Exogenous utilization of jasmonic acid and methyl jasmonate stimulates growth and biochemical composition of lavender (Lavandula angustifolia) plant

IF 0.7 Q4 PHARMACOLOGY & PHARMACY

Egyptian Pharmaceutical Journal Pub Date : 2023-07-01 DOI:10.4103/epj.epj_23_23

R. El-Ziat, Dina M. Soliman, Iman El-Sayed

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引用次数: 0

Abstract

Background Lavender (Lavandula angustifolia) as an economic herb is used in traditional medicine, perfume, flavoring, and cosmetics. It is classified in the mint family (Lamiaceae) and commonly used as a landscape plant. Monoterpenes and sesquiterpenes are the most common chemical components found in essential oils. Because of these compounds, it is used for antifungal, antibacterial, and antioxidant activities. Secondary metabolite compounds, that is, jasmonic acid (JA) and methyl jasmonate (MeJA), significantly influence secondary metabolism regulation by stimulating the accumulation of phenols, flavonoids, and alkaloids. Objective The research aimed to estimate the effect of both JA and MeJA on growth parameters, chemical composition, particularly secondary metabolism, and the composition of volatile oils of L. angustifolia Mill plants. Materials and methods In the experiment, JA concentrations of 0, 1, 5, and 10 mM and MeJA concentrations of 0, 0.25, 0.50, and 1.0 mM were used as foliar spray applications on L. angustifolia. The investigation was performed as a randomized complete block design in three replicates. The parameters collected were different growth parameters, essential oil components using gas chromatography–mass spectrometry, the number of glands and secretory trichome diameter by scanning electron microscope, as well as chemical constituents. Results and conclusion The results showed that growth parameters were increased gradually with the increasing of JA and MeJA concentrations. The effects of JA and MeJA at high concentrations were more effective on all the growth parameters, biochemical components, and the number of glands and diameter of secretory trichomes than other concentrations and control plants in both seasons. JA application significantly increased chlorophyll a and b, carotenoids, and N and protein content of lavender plants. MeJA gave the highest values of total sugar, free amino acids, and phenols. Therefore, the results suggested that 10 mM of JA and 1.0 mM of MeJA significantly stimulate lavender plant growth and chemical compounds and volatile oil components, especially linalool and camphor, increasing its value and raising its quality in the perfume and cosmetics industries and various chemical industry applications.

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外源利用茉莉酸和茉莉酸甲酯刺激薰衣草（Lavandula angustifolia）植物的生长和生化组成

背景薰衣草（Lavandula angustifolia）是一种经济草本植物，可用于传统医药、香水、调味品和化妆品。它被归入薄荷科（Lamiaceae），通常用作景观植物。单萜和倍半萜是精油中最常见的化学成分。这些化合物具有抗真菌、抗细菌和抗氧化作用。次生代谢化合物，即茉莉酸（JA）和茉莉酸甲酯（MeJA），通过刺激酚类、黄酮类和生物碱的积累，对次生代谢的调节有显著影响。目的本研究旨在评估 JA 和 MeJA 对 L. angustifolia Mill 植物的生长参数、化学成分（尤其是次生代谢）和挥发油成分的影响。材料和方法在实验中，JA 的浓度为 0、1、5 和 10 毫摩尔，MeJA 的浓度为 0、0.25、0.50 和 1.0 毫摩尔，作为叶面喷洒剂喷洒在 L. angustifolia 上。研究采用随机完全区组设计，三次重复。收集的参数包括不同的生长参数、气相色谱-质谱法检测的精油成分、扫描电子显微镜检测的腺体数量和分泌毛状体直径以及化学成分。结果与结论结果表明，随着 JA 和 MeJA 浓度的增加，生长参数逐渐增加。高浓度的 JA 和 MeJA 对所有生长参数、生化成分、腺体数量和分泌毛状体直径的影响均优于其他浓度的 JA 和 MeJA 以及两季的对照植株。施用 JA 能明显增加薰衣草植株的叶绿素 a 和 b、类胡萝卜素、氮和蛋白质含量。MeJA 提供的总糖、游离氨基酸和酚的含量最高。因此，研究结果表明，10 mM 的 JA 和 1.0 mM 的 MeJA 能显著促进薰衣草植株的生长，刺激其化学成分和挥发油成分，尤其是芳樟醇和樟脑，从而提高其在香水和化妆品行业以及各种化工行业的应用价值和质量。

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来源期刊

Egyptian Pharmaceutical Journal PHARMACOLOGY & PHARMACY-

CiteScore

1.10

自引率

0.00%

发文量