Effect of an ethanolic extract of phoradendron liga (Hill. ex H. & Arn.) Elch. on citrus pathogenic fungi

SELIS DE ORSI, A.N.; SGROI, N.A.; SGARIGLIA, M.A.; SOBERÓN, J.R.; QUIROGA, E.N.; VATTUONE, M.A.

Tucumán - Argentina

Congreso; XXIV Annual Scientific Meeting of Tucuman Biology Society; 2007

Tucuman Biology Society (publicado en Bio Cell 32 (2))

Tucumán, Argentina, is a worldwide exporter of lemons. Fungi produce high economic losses when infect lemons during post-harvest. To avoid or alleviate these losses the actual tendence is the use of antifungal products that are inocuous for humans and animals. In this work we assayed the effect of ethanolic extracts of P. Liga on Penicillium digitatum, Penicillium expansum, Geotrichum candidum, and Aspergillus niger growth. Tinctures (96% ethanol, 10% w/v) of dry milled leaves of P. Liga were prepared. Fungal growth inhibition was assayed by: bioautographic assays on Silica gel plates, and radial growth inhibition (RGI). Bioautographies gave fungal growth inhibition. The radial growth of P. digitatum, P. expansum, G. candidum, and A. niger was inhibited 79.64; 38.70; 58.30 and 35.60%, respectively, when fungi were cultivated on solid medium in the presence of 0.15 mg of FC/ml. Consequently, the ethanolic extract of P. Liga would be a suitable natural source of antifungal principles to be applied in the formulation of agrochemicals.