The present study showed that vanillin served as a good quorum quencher molecule as it inhibited 90% acyl homoserine lactones ... A high earthworm density was accompanied by high microbial activity, and dehydrogenase activity was lower in the soil of arable ... Earthworm biomass, density and diversity, as well as dehydrogenase activity, were analysed. Significant soil physical and ... while dehydrogenase activity did not show any significant pattern. Similarly to green algal lichens, ultrastructural ...