Figure 1.

Composition of honeybee gut microbiota and strains of the Core-20 and Core-6 community. (A) Maximum-likelihood tree inferred by GTDB-tk based on the amino acid sequences of bacterial marker genes. (B) Detailed information on strain classification and grouping. The Core-6 community consists of six strains representing the six most prevalent and abundant genera of honeybee gut microbiota, and the Core-20 is composed of 20 strains at the species level. Rounds mark the strains of the Core-20, triangles mark the members of the Core-6 and stars mark strains used in the mono-colonization experiments. Color bars indicate the classification of honeybee gut microbiota.