Effects of Acanthamoeba castellanii on the dissolved oxygen and the microbial community under the experimental aquatic model.

In this study, A. castellanii slightly increased the relative abundance of a few opportunistic pathogens, such as Legionella, Roseomonas, and Haemophilus. This result may be related to the training ground hypothesis. On the other hand, the growth of some bacteria was inhibited, such as Cyanobacteria and Firmicutes. Although A. castellanii did not drastically change the whole bacterial community, we surprisingly found the dissolved oxygen concentration was increased after incubation with A. castellanii. We applied environmental water at the laboratory scale to investigate the interactions among A. castellanii, complex microbial communities and the environment. We identified the bacteria that are sensitive to A. castellanii and further found the novel relationship between dissolved oxygen and microbial interaction. Our results helped to clarify the role of A. castellanii in microbial communities.
PMID: 32918877 [PubMed - as supplied by publisher]

Source: Experimental Parasitology - September 8, 2020 Category: Parasitology Authors: Tsai CM, Chen JW, Lin WC Tags: Exp Parasitol Source Type: research