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The bacterial diversity lurking in protist cell cultures (American Museum novitates, no. 3975)

Show simple item record Aponte, Ameris Gyaltshen, Yangtsho Burns, John A. (Biologist) Heiss, Aaron A. Kim, Eunsoo Warring, Sally D. 2021-08-25T16:34:53Z 2021-08-25T16:34:53Z 2021-08-25
dc.identifier.issn 0003-0082
dc.description 14 pages : illustrations (some color) ; 26 cm. en_US
dc.description.abstract Laboratory cultures of heterotrophic protists are often xenic, meaning that the culture contains more than one microbial organism. In this study, we analyzed genome-assembly data from cultures of four marine protist flagellates—the marine malawimonad Imasa heleensis, the undescribed mantamonad strain SRT-306, the discobid Ophirina amphinema, and the cryptist Palpitomonas bilix—specifically to search for genomes of cocultured bacteria. As no external bacteria have been added to the protist stock cultures, it is probable that the cocultured bacteria came from the original water samples from which the protists were isolated. At least some of these bacteria are consumed as a food source by the protists, all of which are obligate heterotrophs. From four separate metagenomic de novo assemblies for these mixed cultures, we identified 28 scaffolds, which BUSCO analyses suggest represent complete or near-complete bacterial genomes. These scaffolds range in length from 3,139,436 to 6,090,282 bp and encode 2873 to 5666 genes. Only eight of the 28 scaffolds corresponded to entries in the NCBI genome database, meaning that 20 of these scaffolds represent genomes from putatively novel bacterial species. Our findings highlight that data like these, which are often discarded or overlooked, can be a source of novel genomes and/or species. en_US
dc.language.iso en_US en_US
dc.publisher American Museum of Natural History. en_US
dc.relation.ispartofseries American Museum novitates;no.3975.
dc.subject Protista -- Molecular genetics. en_US
dc.subject Prokaryotes -- Molecular genetics. en_US
dc.subject Bacteria. en_US
dc.title The bacterial diversity lurking in protist cell cultures (American Museum novitates, no. 3975) en_US

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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