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Texto completo SciELO Chile
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Id: biblio-1011419
Autor: Chen, Yuhang; Zhang, Xuerong; Guo, Qiaosheng; Cao, Liping; Qin, Qin; Li, Chen; Zhao, Miao; Wang, Wenming.
Título: Plant morphology, physiological characteristics, accumulation of secondary metabolites and antioxidant activities of Prunella vulgaris L. under UV solar exclusion
Fonte: Biol. Res;52:17, 2019. tab.
Idioma: en.
Projeto: National Nature Science Foundation of China; . China Postdoctoral Science Foundation; . Basic Research Program of Sichuan Province of China; . Sichuan Province Undergraduates Innovating Experimentation Project.
Resumo: BACKGROUND: Prunella vulgaris L. has been an important medicinal plant for the treatment of thyroid gland malfunction and mastitis in China for over 2000 years. There is an urgent need to select effective wavelengths for greenhouse cultivation of P. vulgaris as light is a very important factor in P. vulgaris growth. Here, we described the effects of natural light (control) and UV solar exclusion on the morphological and physiological traits, secondary metabolites contents and antioxidant activities of P. vulgaris. RESULTS: The results showed that UV solar exclusion resulted in remarkable alterations to morphological and biomass traits; significantly reduced the chlorophyll a, chlorophyll b and total chlorophyll contents; significantly enhanced the ratio of chlorophyll a to b; and significantly increased the carotenoid and anthocyanin contents in P. vulgaris. UV solar exclusion significantly increased the catalase (CAT) and peroxidase (POD) activities, increased superoxide dismutase (SOD) and ascorbate peroxidase (APX) activities and slightly decreased the glutathione (GSH) content. UV solar exclusion significantly increased the soluble sugar and H2O2 contents and increased the soluble protein content but significantly decreased the proline content and slightly decreased the MDA content. The secondary metabolite contents (total phenolics, rosmarinic acid, caffeic acid, hyperoside, ursolic acid and oleanolic acid) and in vitro antioxidative properties (DPPH· and ABTS·+scavenging activities) were significantly increased in P. vulgaris spicas under UV solar exclusion. Additionally, the total polysaccharide and total flavonoids contents were slightly increased by UV solar exclusion. The salviaflaside content was significantly reduced by UV solar exclusion. CONCLUSION: Our study demonstrated that P. vulgaris activates several antioxidant defence systems against oxidative damage caused by UV solar exclusion.
Descritores: Fotossíntese/fisiologia
-Raios Ultravioleta
Prunella/efeitos da radiação
Antioxidantes/efeitos da radiação
Responsável: CL1.1 - Biblioteca Central

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Texto completo SciELO Chile
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Id: lil-648576
Autor: Chen, Yuhang; Zhu, Zaibiao; Guo, Qiaosheng; Zhang, Lixia; Zhang, Xiaoming.
Título: Variation in concentrations of major bioactive compounds in Prunella vulgaris L. related to plant parts and phenological stages
Fonte: Biol. Res;45(2):171-175, 2012. ilus, tab.
Idioma: en.
Projeto: National Nature Science Foundation of China.
Resumo: Prunella vulgaris L. (Labiatae) contains a variety of structurally diverse natural products, primarily rosmarinic acid (RA), ursolic acid (UA) and oleanolic acid (OA), which possess a wide array of biological properties. In the present study, P. vulgaris was harvested at three developmental stages (vegetative, full-flowering and mature-fruiting stages), dissected into stem and leaf tissues and assayed for chemical contents using high performance liquid chromatography. Significant changes in the concentrations of the major secondary metabolites (RA, UA and OA) were observed at the different development stages. The highest concentrations of RA, UA and OA were found at the full-flowering stage (15.83 mg/g dry weight (DW) RA, 1.77 mg/g DW UA and 0.65 mg/g DW OA). Among the different aerial parts of the plant, the concentrations of RA, UA and OA were higher in the leaves than in the stems at the different developmental stages. These results suggest that the full-flowering stage is characterized by the highest concentrations of bioactive compounds. Therefore, this stage may be the optimum point for harvesting P. vulgaris plants. In additional, the leaves of P. vulgaris demonstrated higher RA, UA and OA concentrations than the stems, suggesting higher utilization potential.
Descritores: Cinamatos/análise
Ácido Oleanólico/análise
Extratos Vegetais/química
-Cromatografia Líquida de Alta Pressão
Folhas de Planta/química
Caules de Planta/química
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CL1.1 - Biblioteca Central

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