Cellulase activity of soils: Effect of trace elements

Studies have shown that the activities of many enzymes are inhibited by trace elements. Little information is available, however, on the effect of trace elements on cellulase activity in soils. The term trace element used here refers to the elements that are, when present in sufficient concentration, toxic to living systems. Trace elements are added to soils as fertilizers, as impurities in fertilizers or as components of industrial wastes or sewage sludges. Information on the effect of trace elements on cellulase activity in soils is needed because this enzyme system is involved in decomposition of cellulolytic materials added to soils. Our objective, therefore, was to evaluate the relative effects of trace elements on cellulase activity in soils.