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Type of publication: Konferencijų tezės nerecenzuojamuose leidiniuose / Conference theses in non-peer-reviewed publications (T2)
Field of Science: Biologija / Biology (N010)
Author(s): Paužaitė, Giedrė;Naučienė, Zita;Malakauskienė, Asta;Žūkienė, Rasa;Mildažienė, Vida;Jakštas, Valdas;Ivanauskas, Liudas;Filatova, Irina;Lyushkevich, Veronika
Title: The content of secondary metabolites and antioxidant activity in purple coneflower (Echinacea purpurea) significantly increases after seed treatment with physical stressors
Is part of: 14th international conference of the Lithuanian biochemical society, Druskininkai, June 27-30, 2016 : program and abstract book. Vilnius : Lithuanian biochemical society, 2016
Extent: p. 12-13
Date: 2016
Keywords: Šalta plazma;Echinacea purpurea;Morfologiniai parametrai;Elektromagnetinis laukas;Cold plasma;Echinacea purpurea;Morpho-physiological parameters;Electromagnetic field
ISBN: 9786094542275
Abstract: Purple coneflower, Echinacea purpurea (L.) Moench, is one of the most widely used medicinal plants and dietary supplements. Numerous attempts have been made to meet increasing demands in production of the commercially important plant biomass and to optimize composition of pharmaceutical products, including biotechnological approaches. We studied the effects of pre-sowing seed treatment, using vacuum (7 min), radio-frequency electromagnetic field (5-15 min) and cold plasma (2-7 min), on germination and growth of Echinacea purpurea by using germination tests, estimating plant morpho-physiological parameters, detecting certain metabolites and radical scavenging activity in leaf extracts. All applied treatments induced earlier and faster germination of E. purpurea seeds. Cold plasma and electromagnetic field did not change the final germination percentage, and it was decreased after vacuum treatment. The plants grown from all groups of treated seeds had larger height, developed more leaves, whereas some treatments substantially increased root weight. The content of vitamin C and phenolic acids in extracts of plant leaves from the treated groups was substantially higher in comparison to the control: the amount of cichoric acid per plant increased up to 3.8-fold, and amount of vitamin C per plant – up to 1.9 fold. Seed treatments induced an increase in radical scavenging activity (up to +114%) in leaf extracts. We report for the first time that seed treatment with physical stressors not only induce changes in germination and morpho-physiological plant parameters but also leads to substantial increase in amounts of chemical constituents and antioxidant activity in leaves of medicinal plant. [...]
Affiliation(s): Biochemijos katedra
Botanikos sodas
Kauno medicinos universitetas
Lietuvos sveikatos mokslų universitetas. Medicinos akademija
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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