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|Title:||Foliar Content of Phenolic Compounds in Platanthera bifolia from Natural and Transformed Ecosystems at Different Stages of Orchid Development|
|Other Titles:||Содержание фенольных соединений в листьях Platanthera bifolia из естественной и трансформированных экосистем на разных стадиях развития орхидеи|
|Authors:||Maleva, M. G.|
Borisova, G. G.
Chukina, N. V.
Novikov, P. E.
Filimonova, E. I.
Lukina, N. V.
Glazyrina, M. A.
|Publisher:||Siberian Federal University|
Siberian Federal University
|Citation:||Foliar Content of Phenolic Compounds in Platanthera bifolia from Natural and Transformed Ecosystems at Different Stages of Orchid Development [Содержание фенольных соединений в листьях Platanthera bifolia из естественной и трансформированных экосистем на разных стадиях развития орхидеи] / M. G. Maleva, G. G. Borisova, N. V. Chukina et al. // Journal of Siberian Federal University - Biology. — 2021. — Vol. 14. — Iss. 3. — P. 274-286.|
|Abstract:||The representatives of the family Orchidaceae Juss. are often used as a source of natural antioxidants, including phenolic compounds, which play an important role in plant resistance under stressful conditions. This study investigates the content of lipid peroxidation products and soluble phenolic compounds in flowering plants of Platanthera bifolia (L.) Rich. growing in natural (forest park) and transformed (fly ash dumps of Thermal Power Stations) ecosystems of the Middle Urals, Russia, as well as the content of flavonoids at different stages of orchid development. Research has shown that in disturbed habitats, P. bifolia is capable of forming abundant populations containing a significant portion of the flowering plants. Additionally, flowering orchids from fly ash dumps contained an average 20 % more lipid peroxidation products, which indicated a shift in the redox balance towards oxidative processes. An increase by 2.4 times on average in the content of phenolic compounds, particularly flavonoids, was observed at all developmental stages of the plants growing in the transformed ecosystems. Regardless of the growing conditions, the non-flowering mature individuals were characterized by a minimum content of flavonoids, probably due to pre-generative metabolic restructuring. Yet, in the period of orchid blooming, the flavonoid content in their leaves increased again in all study sites. At the same time, the flavonoid proportion of the total soluble phenolic compounds was 42 % in the natural habitat, increasing to 66 % on average in the transformed ecosystems. Thus, flavonoids are involved in the protective adaptive responses of P. bifolia, not only ensuring the survival of this orchid but also contributing to the implementation of its ontogenetic program. © Siberian Federal University. All rights reserved.|
|Keywords:||AGE STRUCTURE OF POPULATION|
FLY ASH SUBSTRATES
|metadata.dc.description.sponsorship:||Acknowledgments. The reported study was partly funded by RFBR and the Government of the Sverdlovsk Region, project number 20-44-660011 and the Ministry of Science and Higher Education of the Russian Federation as part of State Task of the Ural Federal University, FEUZ-2020-0057. The authors are grateful to the reviewers, DSc Pozolotina V.N. (Institute of Plant and Animal Ecology Ural Branch of the RAS, Ekaterinburg) and DSc Dymova O.V. (Institute of Biology of Komi Scientific Centre of the Ural Branch of RAS, Syktyvkar) for valuable comments that helped improve this paper and to Dr. Tripti (Ural Federal University, Ekaterinburg, Russia) for editing of the English language.|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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