The variability of the content of macro- and trace elements and fractions of flavonoids and hydroxycinnamic acids in organs of the honeysuckle Lonicera caerulea subsp . altaicaplants...

A variability of the reproductive capacity of Lonicera caeruleahas been studied in its natural population in the Altai Mountains (Kamenny Belok Ridge). The study was carried out in a local area of...

SRXRF is used to study trends in the content of macro- and microelements in the assimilation organs of blue honeysuckle in geologically contrasting sectors of the Altai Mountains. The accumulation of flavonoids in the organs of L. caerulea is influenced primarily by Cu, Ni, and Zn, as these trace elements are selectively concentrated by this species. Intensified synthesis of chlorogenic acid and its derivatives is due to a considerable increase in Fe concentration in plant leaves.

The concentration of 26 elements in the leaves of blue honeysuckle is reliably measured via SR XRF. The overall content of K and Zn, the concentration of their mobile forms in soils, and their accumulation in the leaves of plants are associated by a positive correlation. The accumulation of elements in the leaves of plants remains relatively stable against a background of a high level of variation in the concentrations of macro- and microelements in the soils of the Altai. Lonicera caerulea is an accumulator of Zn and Cu.

X-ray fluorescence analysis using synchrotron radiation is applied to determine the elemental composition in the leaves of Pentaphylloides fruticosa (L.) O.Schwarz (bush cinquefoil) and Lonicera...

Plants in high-altitude habitats are exposed to severe environmental stressors, including extreme temperatures and irradiation, which can have wide-ranging effects on changes of secondary-metabolite profiles in higher plants. Altitude-related variation of levels of polyphenols in organs of medicinal and food plant species has not yet been investigated sufficiently. This study was focused on variation in quantitative profiles of classes and of individual biologically active phenolic compounds in leaf extracts of resource species Spiraea chamaedryfolia and Spiraea media from the family Rosaceae in coenopopulations of the Altai Mountains, along an altitudinal gradient. High-performance liquid chromatography revealed 22 polyphenolic compounds in the extracts of S. media leaves, with the main polyphenolic compounds being flavonols. Sixteen compounds were found in S. chamaedryfolia leaf extracts, and the major ones were flavonols and a flavanone. Opposite responses to changes in the altitude-associated growth conditions were documented for levels of some individual polyphenolic compounds. With an increase in altitude, concentrations of chlorogenic acid and of flavanone in the extracts of S. chamaedryfolia leaves significantly increased, while concentrations of cinnamic acid, astragalin, and kaempferol diminished. A statistically significant positive correlation between the altitude of plant habitats and total levels of polyphenols and phenolcarboxylic acids was detected. In leaf extracts from S. media, an altitude increase was significantly positively correlated with astragalin, avicularin, and cinnamic acid levels and negatively correlated with hyperoside concentration.