biostudies-literatureBeisser DDeutsche Forschungsgemeinschaft1498https://www.ebi.ac.uk/biostudies/studies/S-EPMC6629928biostudies-literatureUnknown10We studied the impact of protist grazing and exudation on the growth and transcriptomic response of the prokaryotic prey species <i>Polynucleobacter asymbioticus</i>. Different single- and multi-species communities of chrysophytes were used to determine a species-specific response to the predators and the effect of chrysophyte diversity. We sequenced the mRNA of <i>Pn. asymbioticus</i> in communities with three single chrysophyte species (<i>Chlorochromonas danica, Poterioochromonas malhamensis</i> and <i>Poteriospumella lacustris</i>) and all combinations. The molecular responses of <i>Pn. asymbioticus</i> significantly changed in the presence of predators with different trophic modes and combinations of species. In the single-species samples we observed significant differences related toFrontiers in microbiologyInteraction-Specific Changes in the Transcriptome of <i>Polynucleobacter asymbioticus</i> Caused by Varying Protistan Communities.PMC6629928RA 1898/1-1BO 3245/17Rahmann SBock CSures BVos MBoenigk JHahn MWBeisser DfalseInteraction-Specific Changes in the Transcriptome of <i>Polynucleobacter asymbioticus</i> Caused by Varying Protistan Communities.We studied the impact of protist grazing and exudation on the growth and transcriptomic response of the prokaryotic prey species <i>Polynucleobacter asymbioticus</i>. Different single- and multi-species communities of chrysophytes were used to determine a species-specific response to the predators and the effect of chrysophyte diversity. We sequenced the mRNA of <i>Pn. asymbioticus</i> in communities with three single chrysophyte species (<i>Chlorochromonas danica, Poterioochromonas malhamensis</i> and <i>Poteriospumella lacustris</i>) and all combinations. The molecular responses of <i>Pn. asymbioticus</i> significantly changed in the presence of predators with different trophic modes and combinations of species. In the single-species samples we observed significant differences related to2019-01-01T00:00:00Z20192026-04-08T05:22:11.502Z2019-07-30T07:06:27ZS-EPMC66299283135464610.3389/fmicb.2019.01498