Fungitoxic Potential of Extracts of Four Pinus spp. Bark to Inhibit Fungus Trametes versicolor (L. ex. Fr.) Pilát

Abstract

Pinus bark was extracted through a mixture of acetone-hexane-water 54:44:2 V. Bioassays were performed according to the agar dilution method (petri dish) using concentrations of 0.1, 0.5, and 1.0 mg mL -1 for each of the obtained extracts. All extracts showed some inhibition degree. Crude extracts of P. strobus bark showed the greatest inhibition degree. Antifungal potential of all tested extracts at a concentration of 1.0 mg mL -1 was classified as toxic. Through simple regression models, concentrations were calculated in order to achieve a 50% inhibition (IC50) and the minimal inhibition concentration (MIC). MIC values were 1.58, 1.72, 1.24, and 1.94 mg mL -1 for bark extracts of P. strobus, P. douglasiana, P. caribaea, and P. leiophylla, respectively.

Trichoderma spp. from Pine Bark and Pine Bark Extracts: Potent Biocontrol Agents against Botryosphaeriaceae

“…Lomeli-Ramírez et al [40] reported toxic effects of extracts from P. strobus, P. douglasiana, P. caribea and P. leiophylla toward T. versicolor. Similarly, Maritime pine extracts exhibited a significant antifungal potency against C. puteana and T. versicolor which mycelia growth was reduced by 89% and 87%, respectively [20].…”