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Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 15/10/2014
Fecha de la última actualización: | 20/06/2022
Autoria: | DIAZ, P.; CABRERA, A.; ALEM, D.; LARRAÑAGA, P.; FERREIRA, F.; DALLA RIZZA, M.
Afiliación: | PAOLA ALEXANDRA DIAZ DELLAVALLE, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; ANDREA CECILIA CABRERA BARRIOS, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; DIEGO MARTIN ALEM GLISON, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; PATRICIA LUCIA LARRAÑAGA LUZ, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; FERNANDO FERREIRA, Universidad de la República (UdelaR)/ Facultad de Química; MARCO DALLA RIZZA VILARO, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay.
Título: | Antifungal activity of medicinal plant extracts against phytopathogenic fungus Alternaria spp. [Actividad antifúngica de extractos de plantas medicinales contra el hongo fitopatógeno alternaria spp.]
Año de publicación: | 2011
Fuente/Imprenta: | Chilean Journal of Agricultural Research, 2011, v.71, no.2, p.231-239. doi: http://dx.doi.org/10.4067/S0718-58392011000200008
Descripción Física: | 2-s2.0-79960343579
ISSN: | 0718-5820
DOI: | 10.4067/S0718-58392011000200008
Idioma: | Inglés
Notas: | RESEARCH. Received: 2 August 2010. Accepted: 26 December 2010.

Contenido:

ABSTRACT.

The aim of the study was to evaluate the antifungal activity of extracts of 10 plant species used in traditional Uruguayan medicine against the phytopathogenic fungus Alternaria spp. The plants were selected on the basis of their reported ethnobotanical uses. Aqueous, saline buffer and acid extracts of different plant species were screened in vitro for their antifungal activity against Alternaria spp. For the antifungal evaluation we used a microspectrophotometric assay. Minimal inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of the extracts were determined. Three solvents were assayed on different tissues of the plants and among the 29 evaluated extracts, 31% of the extracts inhibited growth, similar to the effects of a chemical fungicide. Acid extracts of the plants were more effective than the aqueous or buffer extracts against Alternaria spp. The MIC values of the extracts were determined ranging between 1.25 and 25 &#956;g mL-1. The MFC values of the extracts ranged between 1.25 &#956;g mL-1 (Rosmarinus officinalis L.) and 10 &#956;g mL-1 (Cynara scolymus L.). MICs and MFCs values obtained from leaves (Salvia officinalis L. and R. officinalis) and seeds extracts (Salvia sclarea L.) were quite comparable to values obtained with the conventional fungicide captan (2.5 &#956;g mL-1). The extracts of Salvia sclarea, S. officinalis and R. officinalis could be considered as potential sources of antifungal compounds for treating diseases in plants. These extracts showed maximum activity, even at very low concentrations, and the same fungicide effects as chemical fungicide. We conclude from this that these extracts exhibit amazing fungicidal properties that support their traditional use as antiseptics.

Palabras-Clave: | ANTIFUNGICOS.
Thesagro: | ALTERNARIA; FUNGICIDAS; HONGOS; PLANTAS MEDICINALES.
Categoría del tema: | H20 Enfermedades de las plantas
URL: | http://www.ainfo.inia.uy/digital/bitstream/item/3535/1/Diaz-Dellavalle-P.-2011.-Chilean-JAR-V.712-p.231-239.pdf
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (100183-1) - PXI - AP - DD - PP/CHILEAN JAR/2011 -  -  - DIS