Microorganisms, Volume 8, Issue 10
October 2020 - 174 articles
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Cover Story: Bacteria packaging is a phenomenon observed when undigested bacteria are evacuated in a protozoan’s fecal pellets. The packaged bacteria may be surrounded by a membrane layer that can protect them from physical stress and biocides. Here, we show that the ciliates Tetrahymena pyriformis and T. thermophila can package various species of non-pathogenic bacteria with different characteristics, as previous research in the field has focused almost exclusively on human pathogens. Each of the bacterial strains studied produces a specific pellet morphology, illustrating the complex relationship between bacteria and protozoa. Based on these results, bacteria packaging may be a more widespread phenomenon than previously considered. View this paper