The core microbiome of sessile ciliate Stentor coeruleus is not shaped by the environment

Scientific Reports
Olivia LanzoniAlexey Potekhin

Abstract

Microbiomes of multicellular organisms are one of the hottest topics in microbiology and physiology, while only few studies addressed bacterial communities associated with protists. Protists are widespread in all environments and can be colonized by plethora of different bacteria, including also human pathogens. The aim of this study was to characterize the prokaryotic community associated with the sessile ciliate Stentor coeruleus. 16S rRNA gene metabarcoding was performed on single cells of S. coeruleus and on their environment, water from the sewage stream. Our results showed that the prokaryotic community composition differed significantly between Stentor cells and their environment. The core microbiome common for all ciliate specimens analyzed could be defined, and it was composed mainly by representatives of bacterial genera which include also potential human pathogens and commensals, such as Neisseria, Streptococcus, Capnocytophaga, Porphyromonas. Numerous 16S rRNA gene contigs belonged to endosymbiont "Candidatus Megaira polyxenophila". Our data suggest that each ciliate cell can be considered as an ecological microniche harboring diverse prokaryotic organisms. Possible benefits for persistence and transmission in natur...Continue Reading

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Citations

Jul 15, 2021·Current Biology : CB·Filip HusnikPatrick J Keeling

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Methods Mentioned

BETA
Illumina sequencing
PCR

Software Mentioned

USEARCH
QIIME
Quantitative Insights Into Microbial Ecology

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