Metabolomics; high-resolution mass spectrometry; secondary metabolite induction; culture conditionsPublisher's Note: MDPI stays neutral with regard

Metabolomics; high-resolution mass spectrometry; secondary metabolite induction; culture conditionsPublisher's Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.1. Introduction Cyanobacteria are Gram-negative photosynthetic prokaryotes…