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Uso potencial de nanopartículas de plata sintetizadas electroquímicamente sobre el patógeno del tizón de la panícula del arroz, Burkholderia glumae

Bacterial panicle blight caused by Burkholderia glumae. Photo: H.A. Padilla

Resumen

Burkholderia glumae es el principal agente causal del tizón bacteriano de panícula en el arroz (Oriza sativa), una enfermedad que genera pérdidas en la producción mundial. A pesar de su importancia económica, todavía no se dispone de medidas eficaces de control ni de variedades de arroz con resistencia total a la enfermedad. En este estudio se evaluó la actividad antimicrobiana de las nanopartículas de plata sintetizadas electroquímicamente (AgNPs) contra B. glumae. Para la síntesis de AgNPs se utilizó una fuente de alimentación DC (UNI-T®) regulada a 24 V, que se conectó a dos electrodos cilíndricos de plata de alta pureza (Aldrich-99,99%), utilizando agua destilada como electrolito. La concentración de AgNPs se determinó midiendo los sólidos disueltos totales (TDS) a través del multiparámetro HandyLab 680 FK. La actividad antibacteriana de estas nanopartículas contra B. glumae se determinó por el método de macrodilución de caldo, a diferentes concentraciones (1-10 mg L-1). La concentración mínima inhibitoria (CMI) se determinó en 5 mg L-1 de AgNPs. Los resultados de este estudio revelaron que las AgNPs podrían considerarse como nanoplaguicidas prometedores para controlar el tizón bacteriano de panícula en el arroz.

Palabras clave

Plata coloidal, Concentración mínima inhibitoria, Nanoesticida, Oryza sativa L.

PDF (English)

Citas

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