TY - JOUR AU - Kearney, Sean M. AU - Thomas, Elaina AU - Coe, Allison AU - Chisholm, Sallie W. PY - 2021 DA - 2021/01/06 TI - Microbial diversity of co-occurring heterotrophs in cultures of marine picocyanobacteria JO - Environmental Microbiome SP - 1 VL - 16 IS - 1 AB - The cyanobacteria Prochlorococcus and Synechococcus are responsible for around 10% of global net primary productivity, serving as part of the foundation of marine food webs. Heterotrophic bacteria are often co-isolated with these picocyanobacteria in seawater enrichment cultures that contain no added organic carbon; heterotrophs grow on organic carbon supplied by the photolithoautotrophs. For examining the selective pressures shaping autotroph/heterotroph interactions, we have made use of unialgal enrichment cultures of Prochlorococcus and Synechococcus maintained for hundreds to thousands of generations in the lab. We examine the diversity of heterotrophs in 74 enrichment cultures of these picocyanobacteria obtained from diverse areas of the global oceans. SN - 2524-6372 UR - https://doi.org/10.1186/s40793-020-00370-x DO - 10.1186/s40793-020-00370-x ID - Kearney2021 ER -