Biochemical Specificity and Ecological Preferences of East Asian Species
Bistorta pacifica and
B. elliptica (Polygonaceae)
G. I. VYSOCHINA1, M. S. VORONKOVA1, P. G. GOROVOY2, T. A. KUKUSHKINA1
1Central Siberian Botanical Garden SB RAS, 630190, Novosibirsk, Zolotodolinskaya str., 101
2Pacific Institute of Bioorganic Chemistry FEB RAS, 690022, Vladivostok, 100 let Vladivostoku ave., 159
bmc_87@mail.ru
Keywords: Bistorta pacifica, Bistorta elliрtica, flavonols, catechins, tannins, saponins, pectins, protopectins, carotenoids, phenolcarbonic acids
Abstract
The content of secondary metabolites - flavonols, catechins, tannins, saponins, pectinaceous substances and carotеnoids in leaves and inflorescences of East Asian species Bistorta pacifica (V. Petrov ex Kom) Kom. and B. elliрtica (Willd. ex Spreng.) Kom. growing in Primorsky Krai was studied. A certain organospecificity in their accumulation was noted. Inflorescences contained more flavonols, catechins and saponins; leaves — more tannins, protopectins and carotеnoids. Phenolic compounds (hyperosid, quercitrin, isoquercitrin, rutin, astragalin, orientin, vitexin and isovitexin) were found in aqueous-alcoholic extracts from elevated parts of the studied plants through the use of HPLC methods. Quercetin, kaempferol, luteolin, orientin, vitexin, isovitexin, chlorogenic and caffeic acids were found in hydrolyzates of the extracts. Morphologically similar species B. pacifica and B. elliрtica differ not only by their ecological preferences, but also by the qualitative composition of phenolic compounds.
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