Figure 1.

Phylogenetic tree showing the position of Rubrobacter radiotolerans strain RSPS-4 with other organisms within the subclass Rubrobacteridae. The tree was inferred from 1,301 aligned characters of the 16S rRNA sequences of different species using the Neighbor-Joining method [30]; bootstrap values are based on 1,000 replicates [31]. The evolutionary distances were calculated using the Jukes-Cantor method [32]. Analysis was carried out with MEGA6 [33]. Bacillus algicola KMM 3737^T (AY228462) was used as an outgroup.