Metatranscriptome at the non-bloom stage
For meta-transcriptomic sequencing, RNA was extracted from Noctiluca cells using TRIzol (Invitrogen). To eliminate rRNA transcripts, the Ribo-zero rRNA Removal Kit (for Bacteria) (Epicentre, USA) was utilized. The samples were then sent to the Novogene Company (Beijing, China) for library construction and sequencing.