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Stimulation of Physiological Processes in St. John’s Wort (Hypericum perforatum L.) Seedlings by Treatments with Triacontanol and Benzyladenine

Stimulation of Physiological Processes in St. John’s Wort (Hypericum perforatum L.) Seedlings by... AbstractTreatment of St. John’s wort plantlets with 1 µM triacontanol and 2 µM benzyladenine stimulates growth and metabolic processes, being an environmental-friendly approach for optimizing the cultivation of these valuable medicinal plants under controlled conditions. When the two growth regulators (a bioactive cuticular wax constituent and a cytokinin) are applied simultaneously, they act synergistically, enhancing each other’s effect on the biomass accumulation and on certain parameters of the photosynthetic light use efficiency, such as the effective quantum yield of photosystem II and the overall vitality index of the photosynthetic apparatus which performs the conversion of light energy into usable forms for carbon dioxide assimilation. The results concerning the interactions between the two externally applied growth regulators during the early development of St. John’s wort plants may lead to a more efficient cultivation of this herbal medicinal product, including the possibility to modulate the production of pharmacologically active metabolites. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Biologica Marisiensis de Gruyter

Stimulation of Physiological Processes in St. John’s Wort (Hypericum perforatum L.) Seedlings by Treatments with Triacontanol and Benzyladenine

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Publisher
de Gruyter
Copyright
© 2022 Laszlo Fodorpataki et al., published by Sciendo
eISSN
2668-5124
DOI
10.2478/abmj-2022-0007
Publisher site
See Article on Publisher Site

Abstract

AbstractTreatment of St. John’s wort plantlets with 1 µM triacontanol and 2 µM benzyladenine stimulates growth and metabolic processes, being an environmental-friendly approach for optimizing the cultivation of these valuable medicinal plants under controlled conditions. When the two growth regulators (a bioactive cuticular wax constituent and a cytokinin) are applied simultaneously, they act synergistically, enhancing each other’s effect on the biomass accumulation and on certain parameters of the photosynthetic light use efficiency, such as the effective quantum yield of photosystem II and the overall vitality index of the photosynthetic apparatus which performs the conversion of light energy into usable forms for carbon dioxide assimilation. The results concerning the interactions between the two externally applied growth regulators during the early development of St. John’s wort plants may lead to a more efficient cultivation of this herbal medicinal product, including the possibility to modulate the production of pharmacologically active metabolites.

Journal

Acta Biologica Marisiensis – de Gruyter

Published: Dec 1, 2021

Keywords: biomass production; carotenoids; chlorophyll fluorescence; growth regulators; photosynthetic quantum yield

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