Figure 1
From: Microbial life at high salt concentrations: phylogenetic and metabolic diversity
The universal phylogenetic tree of life as based on small subunit rRNA gene sequences, and the distribution of halophilic microorganisms within the tree. Groups marked with blue boxes contain at least one halophilic representative (e.g the Bacteroidetes, of which Salinibacter ruber is the sole halophilic member described to date); others such as the Halobacteriales consist entirely of halophiles. The tree is based on Fig. 11.16 in Madigan and Martinko, 2006 (78).