Long-Term Heat Selection of the Coral Endosymbiont Cladocopium C1^acro (Symbiodiniaceae) Stabilizes Associated Bacterial Communities.

ABSTRACT: Heat-tolerant strains of the coral endosymbiont, Cladocopium C1^acro (Symbiodiniaceae), have previously been developed via experimental evolution. Here, we examine physiological responses and bacterial community composition (using 16S rRNA gene metabarcoding) in cultures of 10 heat-evolved (SS) and 9 wild-type (WT) strains, which had been exposed for 6 years to 31 °C and 27 °C, respectively. We also examine whether the associated bacterial communities were affected by a three-week reciprocal transplantation to both temperatures. The SS strains had bacterial communities with lower diversities that showed more stability and lower variability when exposed to elevated temperatures compared with the WT strains. Amplicon sequence variants (ASVs) of the bacterial genera Labren

SUBMITTER: Buerger P 

PROVIDER: S-EPMC9101544 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature