Prenylated β-diketones, two new additions to the family of biologically active Hypericum perforatum L. (Hypericaceae) secondary metabolites

2018 ◽  
Vol 118 ◽  
pp. 505-513 ◽  
Author(s):  
Niko S. Radulović ◽  
Marija S. Genčić ◽  
Nikola M. Stojanović ◽  
Pavle J. Randjelović ◽  
Nicolas Baldovini ◽  
...  
Biomolecules ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1283 ◽  
Author(s):  
Martina Paponov ◽  
Manya Antonyan ◽  
Rune Slimestad ◽  
Ivan A. Paponov

The plant hormone jasmonic acid (JA) fine tunes the growth–defense dilemma by inhibiting plant growth and stimulating the accumulation of secondary compounds. We investigated the interactions between JA and phytochrome B signaling on growth and the accumulation of selected secondary metabolites in Hypericum perforatum L., a medically important plant, by spraying plants with methyl jasmonate (MeJA) and by adding far-red (FR) lighting. MeJA inhibited plant growth, decreased fructose concentration, and enhanced the accumulation of most secondary metabolites. FR enhanced plant growth and starch accumulation and did not decrease the accumulation of most secondary metabolites. MeJA and FR acted mostly independently with no observable interactions on plant growth or secondary metabolite levels. The accumulation of different compounds (e.g., hypericin, flavonols, flavan-3-ols, and phenolic acid) in shoots, roots, and root exudates showed different responses to the two treatments. These findings indicate that the relationship between growth and secondary compound accumulation is specific and depends on the classes of compounds and/or their organ location. The combined application of MeJA and FR enhanced the accumulation of most secondary compounds without compromising plant growth. Thus, the negative correlations between biomass and the content of secondary compounds predicted by the growth-defense dilemma were overcome.


2021 ◽  
Vol 46 ◽  
pp. 71-78
Author(s):  
Alessandra Carrubba ◽  
Silvia Lazzara ◽  
Antonio Giovino ◽  
Giuseppe Ruberto ◽  
Edoardo Napoli

2011 ◽  
Vol 102 (21) ◽  
pp. 10072-10079 ◽  
Author(s):  
Xi-Hua Cui ◽  
Hosakatte Niranjana Murthy ◽  
You-Xun Jin ◽  
Yong-Hyeon Yim ◽  
Ji-Yeong Kim ◽  
...  

2022 ◽  
Author(s):  
EditorJournals and Conferences

This article provides information on the morpho-physiological characteristics, chemical composition, especially the amount of alkaloids and vitamins, and their function in the body, as well as thorn bushes, hole field, yarrow plants, which are considered medicinal plants.The article deals with the botanical and morpho-physiological characteristics of the plant Achillea Millefolium L., one of the medicinal plants used in scientific medicine, systematics, some biologically active substances in the chemical composition, especially vitamins and alkaloids, their function in the body and their role in human health. details are given.The following article describes the role of Capparis spinosa L. in modern taxonomy, its distribution, the structure and properties of the most common alkaloids and vitamins in the plant, and its biochemical functions in the human body.The article concludes with a detailed description of the morpho-physiological characteristics of the plant Hypericum Perforatum L., its chemical composition, especially the amount of alkaloids and vitamins and their function in the body and their role in human health.


2018 ◽  
pp. 145-151
Author(s):  
Лариса (Larisa) Николаевна (Nikolaevna) Зибарева (Zibareva) ◽  
Елена (Elena) Сергеевна (Sergeevna) Филоненко (Filonenko)

The influence of ultrasonic irradiation on extraction of secondary metabolites from plants of the family Caryophyllaceae was study. It is shown that while carrying out extraction and the effects of ultrasound observed acceleration of the extraction process such biologically active compounds as ecdysteroids and flavonoids. The time of extraction of ecdysteroids from the aerial part of Silene viridiflora, Silene sendtneri, Silene roemeri, colpophylla Silene, Silene frivaldszkyana and Lychnis chalcedonica decreased by 6–12 times. Found that ultrasound has a different effect on the process of extraction of compounds from different plant species. Lychnis chalcedonica, with an average level of ecdysteroids, after 60 minutes of exposure is achieved by the extraction of the ecdysteroids is equal to the control, and after 90 min, exceeding its level by 49%. From Silene frivaldszkyana - species with high content of ecdysteroids control level were achieved after 120 min of ultrasonic treatment. High-intensity ultrasound accelerates the process, reduces the volume of solvents and increases the yield of flavonoids in 28–41% in comparison with the control. The destructive effect of ultrasound on the secondary metabolites not observed, as confirmed by UV-spectra and high performance liquid chromatography.


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