Widespread Oceanospirillaceae Bacteria in Porites spp.

Figure 1

Neighbor-joining phylogenetic tree of OTU C7-A01c and its nearest neighbors. This OTU was detected in each Porites mucus sample and one adjacent seawater sample in the work described here. C7-A01c also shared at least 97.3% nucleotide identity with OTUs PA1 (AF365457) and PAST_E05 (GU119071) in Porites astreoides (*) from the Caribbean [4] and affiliated with clones from an uncultivated Oceanospirillaceae clade whose members include OTUs from Montastraea faveolata (FJ202175, FJ202634, FJ202970), M. annularis (DQ200446), M. franksi (GU118838), Acropora cervicornis (GU117995), and the six-bar angelfish (EU884929, EU884930). “T” designates a type strain. The tree is rooted by Bacillus subtilis and to 16S rRNA structural masks. Bootstrap values were generated after 1000 resamplings and are shown at the nodes. Values of 100% are not included. The scale bar represents the number of nucleotide substitutions per site, which refers to the branch lengths for comparisons between nodes.