Two true thermophilic strains were isolated, strain 16A and D 10 growing optimally at 70-75°C, closely related to Hydrogenobacter species, showing 96% and 95% homology with Hydrogenobacter hydrogenophilus, respectively.
Tveir hitakærir stofnar voru einangraðir, 16C og D 10 sem vaxa best við 70–75°C. Þeir sýndu mestu sampörun við Hydrogenobacter hydrogenophilus (96 og 95%).