Fig 2. Bayesian phylogenetic tree of snow-inhabiting Chloromonas spp. based on 5,497 base pairs from four genes.

The small subunit and large subunit of rDNA, and the first and second codon positions of atpB and psaB genes were partitioned and unlinked (S4 Table). Specimens of field-collected “C. nivalis zygotes” are underlined. Corresponding posterior probabilities (0.95 or more) are shown at the top left. Numbers shown at the top right, bottom left, and bottom right indicate bootstrap values (50% or more) in the maximum likelihood, maximum parsimony, and neighbor-joining analyses, respectively.