Illumina sequencing of Psalteriomonas lanterna: control
DNA was isolated using Genomic DNA Mini Kit (Geneaid). V4 region of the 16S rRNA gene was amplified using 515F (GTGYCAGCMGCCGCGGTAA) and 806R (GGACTACNVGGGTWTCTAAT) primers with annealing temperature of 55 C. PCR products were purified using GeneJET PCR Purification Kit (Thermo Scientific). Library preparation, Illumina sequencing (NovaSeq 6000 2x250bp), and demultiplexing of the raw paired-end 16S rRNA gene reads was performed at the SEQme company (Dob, Czech Republic).