Particle-attached bacteria act as gatekeepers in the decomposition of complex phytoplankton polysaccharides. - Wang FQ; Bartosik D; Sidhu C; Siebers R; Lu DC; Trautwein-Schult A; Becher D; Huettel B; Rick J; Kirstein IV; Wiltshire KH; Schweder T; et al. (Microbiome, 2024)