Fig 4.

Phylogenetic analysis of 16S rDNA sequences from GMDs obtained from Sargasso Sea water. Nodes supported by bootstrap proportions >90% in both distance and parsimony analyses are shown as filled circles; open circles indicate ≤70% support. Scale bars (a–c) correspond to 0.10 substitutions per nucleotide position. Dotted lines represent lineages added by the ARB parsimony insertion tool. (a) Planctomycetes and relatives. Verrucomicrobia and Chlamydiae sequences were used as outgroups. (b) Cytophaga–Flavobacterium–Bacteroides and relatives. Chlorobiaceae sequences were used as outgroups. (c) Alpha Proteobacteria. Gamma and beta Proteobacteria sequences were used as outgroups. (d) Phase contrast photomicrograph of strain GMDJE10E6. (Bar = 10 μm.)