AVALIAÇÃO DA SENSIBILIDADE AO CÁDMIO POR Parmotrema tinctorum E Usnea barbata, DOIS LIQUENS COMUMENTE ENCONTRADOS NO BIOMA CERRADO

Abstract

Lichens are very sensitive to environmental changes and due to their morphological characteristics are considered excellent bioindicators of industrial and urban environmental pollution. However, few studies have associated lichens to biomonitoring of agricultural pollutants, such as heavy metals used in the preparation of fertilizers and pest control. This work aims to evaluate physiological changes and the cytotoxicity of different concentrations of the heavy metal cadmium to two species of lichens commonly found in Cerrado fragments, the species Parmotrema tinctorum and Usnea barbata. Our purpose was to identify the most sensitive species, in order to generate a perspective for its use in biomonitoring the dispersion of agricultural pollutants.