Prokaryotic Communities From Marine Biofilms Formed on Stainless Steel Plates in Coral Mesocosms

These files contain the raw 16S rRNA gene amplicon DNA sequence files from 15 microbial communities (sample names: CnD16B, CnD17B, CnD18B, CnD19B, CnD21B, CnD22B, CnD23B, CnD24B, CnD25B, PsD5B, CnH101B, CnH100B, Pstr4B, Pstr10B, and seawaterB) derived from biofilms on stainless steel plates (316 grade) formed in mesocosms containing diseased corals (stony coral tissue loss disease), healthy corals, or no coral. Also included are the sequence files from a mock community, and two reagent blanks. Corals (Colpophyllia natans and Pseudodiploria strigosa) were collected between January 2019 and March 2021, from various locations throughout the Florida Keys. Plates were added to mesocosm buckets containing UV-sterilized, 0.2 micrometer-filtered seawater and either diseased (n = 10), healthy (n = 4), or no coral (n = 1) at the Smithsonian Marine Station in Fort Pierce, Florida on March 25, 2021. Plates were removed on March 28, 2021 and placed in individual sterile whirlpaks with RNAlater for future processing.Extraction of DNA from the samples and blanks occurred in April 2021 at the Coral Microbial Ecology Laboratory in St. Petersburg, FL using the Qiagen DNeasy PowerBiofilm kit. Library preparation and DNA sequencing were conducted on May 13, 2021 by the Michigan State University RTSF Genomics Core (East Lansing, MI) using primers 515F: GTGCCAGCMGCCGCGGTAA and 806R: GGACTACHVGGGTWTCTAAT to target the V4 variable region of the 16S rRNA gene on a MiSeq sequencing system with v2 chemistry to obtain paired-end 250-bp reads.