Variability of chemical elements and biologically active polyphenols in Lonicera caerulea subsp. altaica (Caprifoliaceae) plant organs along an altitudinal gradient
I. G. Boyarskikh1,2, A. I. Syso2, T. I. Siromlya2
1Central Siberian Botanical Garden of SB RAS, Novosibirsk, Russia
2Institute of Soil Science and Agrochemistry of SB RAS, Novosibirsk, Russia
Keywords: Lonicera caerulea, высотный градиент, макро- и микроэлементы, флавонолы, флавоны, гидроксикоричные кислоты, Lonicera caerulea, altitudinal gradient, macroelements, trace elements, flavonols, flavons, hydroxycinnamic acids
Abstract
Variability of macro- and trace elements’ content and fractions of flavonoids and hydroxycinnamic acids in organs of the honeysuckle Lonicera caerulea subsp . altaica plants collected from indigenous populations in the Mountain Altai (Seminsky Ridge), Russia, was examined. Statistically significant positive correlations with the plant growth site altitude were found for Cu content in leaves, Ca, Zn and Cd in stems and K and Na uptake rate by leaves. Physiologically important ratio of some biophylic elements, such as Fe/Mn in leaves, were found to decrease with increasing altitude. The main polyphenolic components of L.caerulea subsp. аltaica leaves showed the following altitudinal range: 1176-3216 mg/100g for hydroxycinnamic acid derivatives (chlorogenic and dicoffeylcinchonic acids), 1176-3216 mg/100g, 342-1442 mg/100g for phlavonols (quercetin glucosides), 757-1988 mg/100g for flavons (luteoline and apigenine glucosides). Flavons’ content displayed positive correlation with the growth site altitude. The flavonols’ content, on the contrary, decreased with increased altitude. The flavons’ and flavonols’ accumulation levels were oppositely correlated with Cu content in leaves, Ca, Zn and Cd in stems, as well as K/Na in leaves and K/Ca in stems. The hydroxycinnamic acid derivatives were correlated with Ca, K, Mg, Zn, Mn, Sr and Cd accumulation rates as well as ratios K/Ca, Ca/Na and Cu/Zn in leaves.
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