FIG. 2.

Phylogenetic tree derived from the analysis of the 16S rRNA sequences of the Bacillus species and related taxa investigated for compatible solute production in this study. The bar represents a 5% sequence difference. The outgroup (not shown) consisted of a collection of more than 100 16S rRNA full sequences. Glutamate-producing bacteria are marked by squares, proline-synthesizing bacteria are marked by circles, ectoine-producing species are marked by triangles, the bacterial strain able to synthesize ectoine and proline is marked by a hexagon, and the bacterial strain which synthesizes ectoine and hydroxyectoine is marked by a diamond.