Fig 2. Phylogenetic relationships between rice-associated Methylobacterium isolates.

(A) Neighbor-joining tree constructed from the 16S rRNA gene sequences of 91 distinct Methylobacterium isolates from rice landraces (colored by sampling state), and closely related reference strains (in bold). Bootstrap values ≥ 50% are indicated. We delineated five clades based on the tree (branches are colored as indicated). (B) Piecharts showing the clade composition of Methylobacterium isolates from each state.