Effects of Beech Bark Extract in the Sage (<i>Salvia Officinalis</i> L.) Plant Growth and Volatile Oil Profile

Abstract

The use of bioactive compounds can act in growth stimulation and also influence the biosynthesis of the metabolites in plants. The aim of this paper is to assess the influence of the beech (Fagus sylvatica L.) bark crude extract (BBCE) on the growth and development of sage (Salvia officinalis L.) plants. Special attention was given to the analysis of volatile oil obtained from the sage treated plant. Thus, the biological activity of BBCE was assessed by determining the germination capacity, biomass accumulation, histo-anatomical aspects, and photoassimilatory pigment accumulation, quantitative, and qualitative sage volatile oil analysis. The results show stimulation of the biomass and photoassimilatory pigment accumulation. The mesophyll thickness and the vascular tissue surface are smaller in the treated variants, compared to the control. On the other hand, the amount of volatile oil was significantly higher in the treated plants. In the experimental variants, an increase in the quantity of eucalyptol, camphor, camphene, and α-caryophyllene is observed. The amount of eucalyptol increased in the experimental variant, with about 82%, compared to the control. BBCE could be properly used as natural bioregulators because according to our results seems to improve the yield of the sage crop. The results of this research have the potential to contribute greatly to ecological agricultural production.

Keywords

• beech bark
• bioregulators
• bioactive compounds
• camphor
• eucalyptol
• sage