High-quality metagenome-assembled genomes of bacteria associated with long-term cultivated giant coenocytic green alga Bryopsis

Seaweeds often associate with coexisting bacteria to support nutrient cycling and help defend against pathogenic microbes. Here, we report 38 closed circular and 12 fragmented metagenome-assembled genomes (MAGs) from bacteria tightly associated with the long-term cultivated coenocytic macroalga Bryopsis sp. KO-2023 from Sugashima Island, Japan.