Pseudomonas fluorecens de suelos agrícolas degradadora del herbicida ácido 2,4 Diclorofenoxiacético
Resumen
El 2,4-Diclorofenoxiacetico es uno de los herbicidas más usados para controlar malezas de hoja ancha, el ingrediente activo, sin embargo, tiene efectos crónicos sobre la salud humana y efectos letales sobre el suelo. Se ha demostrado que existen microorganismos que tienen la capacidad de degradar estos compuestos fenólicos, a la que se le denomina biorremediación. El objetivo de la investigación es determinar la presencia de Pseudomonas fluorecens degradadora del herbicida 2,4 D en suelos agrícolas procedentes del sector Barraza, Trujillo, Perú. Se obtuvieron muestras de suelo y de cada una se separó 10 g para efectuar diluciones, posteriormente se sembraron en agar mínimo de sales + 2,4 D y finalmente se seleccionaron colonias con diferentes morfologías. A partir de un cultivo puro se realizó la identificación basándose en su morfología cultural y característica bioquímicas, determinando la presencia de P. fluorescens degradador del 2,4 D aislada de suelos del sector Barraza-Trujillo.
Palabras clave: 2,4 D, herbicida, Pseudomona fluorecens, biorremediación, Barraza, Trujillo-Perú.
Citas
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