Abstract

ROJAS BARRETO, J. A  and  HORMAZA ANAGUANO, A. Evaluation of Growth and Compatibility of white Rot Fungi. Ciencia en Desarrollo [online]. 2014, vol.5, n.2, pp.197-205. ISSN 0121-7488.

The use of white rot fungi (WRF) has generated a great interest due to its enzymatic potential, allowing these organisms to degrade a wide range of xenobiotic compounds. The fungal consortia can improve these degradation processes with regard to monoculture and for its association, the compatibility should be established beforehand. In this study was evaluated the influence of two nutritional conditions on growth and compatibility between three species of WRF, Trametes versicolor, Pleurotus ostreatus and Pleurotus pulmonarius, for future use as consortia in the treatment of organic contaminants. Two discs of the tested fungal species grew for seven days over the culture medium, potato dextrose agar (PDA) and wheat bran agar (WBA). Three treatments were evaluated, T1: T. versicolor vs P. ostreatus, T2: T. versicolor vs P. pulmonarius and T3: P. ostreatus vs P. pulmonarius with their respective controls (free growth). The obtained percentage of mycelial inhibition (< 70 %) showed compatibility between the evaluated fungi in the different treatments under the used nutritional conditions. Regarding to growth rate, it was observed that WBA medium favored a rapid growth for the three fungi compared with PDA.

Keywords : Compatibility; Microbial Consortia; Interactions; Growth Rate; Culture Medium.

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