Important role of endogenous microbial symbionts of fish gills in the challenging but highly biodiverse Amazonian blackwaters.

ABSTRACT: Amazonian blackwaters are extremely biodiverse systems containing some of Earth's most naturally acidic, dissolved organic carbon -rich and ion-poor waters. Physiological adaptations of fish facing these ionoregulatory challenges are unresolved but could involve microbially-mediated processes. Here, we characterize the physiological response of 964 fish-microbe systems from four blackwater Teleost species along a natural hydrochemical gradient, using dual RNA-Seq and 16 S rRNA of gill samples. We find that host transcriptional responses to blackwaters are species-specific, but occasionally include the overexpression of Toll-receptors and integrins associated to interkingdom communication. Blackwater gill microbiomes are characterized by a transcriptionally-active betaproteobacterial cluste

SUBMITTER: Francois-Etienne S 

PROVIDER: S-EPMC10326040 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature