Impact of Soil on Biomass Yield and Accumulation of Lipophilic Secondary Metabolites in Four Hypericum Species

Ieva Miķelsone, Elise Sipeniece, Inga Mišina, Elvita Bondarenko, Dalija Segliņa and Paweł Górnaś ()
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Ieva Miķelsone: Institute of Horticulture, Graudu 1, LV-3701 Dobele, Latvia
Elise Sipeniece: Institute of Horticulture, Graudu 1, LV-3701 Dobele, Latvia
Inga Mišina: Institute of Horticulture, Graudu 1, LV-3701 Dobele, Latvia
Elvita Bondarenko: Institute of Horticulture, Graudu 1, LV-3701 Dobele, Latvia
Dalija Segliņa: Institute of Horticulture, Graudu 1, LV-3701 Dobele, Latvia
Paweł Górnaś: Institute of Horticulture, Graudu 1, LV-3701 Dobele, Latvia

Agriculture, 2025, vol. 15, issue 5, 1-18

Abstract: The genus Hypericum is a widely distributed ornamental and therapeutic herb known for its diverse bioactive compounds, including xanthones. The levels of secondary metabolites in plants are influenced by the specific plant part, agronomic conditions, and environmental factors. Recently, the occurrence of tocotrienols, rare tocochromanols, was reported in Hypericum perforatum . Therefore, this study investigated the profiles of tocochromanols in different plant sections—leaves, stems, flowers, and flower bud—of four Hypericum species: H. perforatum , H. annulatum , H. androsaemum , and H. × inodorum , cultivated in three types of soil: potting, sandy, and clay. In the initial growing year, the highest biomass yield was recorded for H. perforatum grown in potting soil. Soil and species significantly influence biomass yield ( p < 0.05). The inflorescences of H. perforatum were dominated by tocotrienols (T3s), primarily α-T3 and δ-T3, an observation not noted for H. annulatum . α-Tocopherol (α-T) was dominant in the leaves, while in the stems, except for H. perforatum (α-T), tocotrienols—γ-T3 and δ-T3 in H. inodorum and H. androsaemum and α-T3 and γ-T3 in H. annulatum —were more prevalent. This study demonstrates differences in tocochromanol accumulation in different parts of the four Hypericum species grown in different soils.

Keywords: hypericaceae; agricultural factors; variety of phytochemicals; lipophilic bioactive compound; antioxidants; tocols (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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