ECOLOGICAL AND GEOGRAPHICAL FEATURES OF THE ACCUMULATION OF METABOLITES IN THE NEE-DLES OF LARIX CAJANDERI IN THE TERRITORY OF YAKUTIA
UDC 543.544.43:581.5
Abstract
The accumulation of primary and secondary metabolites in Larix cajanderi needles in some areas of North (Kobyayskiy, Anabarskiy uluses and Verkhoyanskiy district), Western (Nyurbinskiy district and Vilyuyskiy ulus) and Central (Megino-Kangalasskiy ulus) Yakutia was studied. It was found that the maximum content of dihydroquercetin, rutin, pimaric, isopimaric and dehydroabietic acids in Larix cajanderi needles was recorded in the northern part of Yakutia, which may be associated with the protective functions of flavonoids and diterpenic acids from ultraviolet radiation under conditions of longer daylight hours in the spring and summer. ... A direct relationship was observed between the content of the studied flavonoids and diterpenic acids and the duration of daylight hours in the spring-summer period in the studied regions of Yakutia, which may be a confirmation of their protective functions from UV radiation. It is shown that as a result of processing the metabolomic profiles of Larix cajanderi needles by the method of principal components, three groups were formed, which correspond to the floristic regions of Yakutia. Samples of Larix cajanderi needles collected in Megino-Kangalassky, Vilyuisky ulus and Nyurba region formed a separate group, which is part of the Central Yakutsk floristic region, from the territory of the Verkhoyansk region and Kobyaysky ulus correspond to the Yano-Indigirsky floristic region, and from the Anabar and the ulus are located separately Arctic floristic region.
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