Figure 3.

Temperature tolerance ranges of species of eubacteria, eukaryotes and archaea, illustrated on a phylogenetic tree using the SHOT web server [62]. Species that grow at temperatures above 50°C are indicated in red; the remaining species grow below 50°C. Eukaryotes have a much lower thermal tolerance than either archaea or eubacteria. The following species have been used: Aeropyrum pernix, Aquifex aeolicus, Arabidopsis thaliana, Archaeoglobus fulgidus, Bacillus halodurans, Bacillus subtilis, Borrelia burgdorferi, Buchnera sp., Caenorhabditis elegans, Campylobacter jejuni, Candida albicans, Caulobacter crescentus, Chlamydia muridarum, Chlamydia trachomatis, Chlamydophila pneumoniae CWL029, Deinococcus radiodurans, Drosophila melanogaster, Escherichia coli K12, Haemophilus influenzae, Halobacterium salinarum, Helicobacter pylori 26695, Homo sapiens, Leuconostoc lactis, Mesorhizobium loti, Methanocaldococcus jannaschii, Methanobacter thermoautotrophicum, Methanosaeta thermophila, Mycobacterium leprae, Mycobacterium tuberculosis, Mycoplasma genitalium, Mycoplasma pulmonis, Neisseria meningitidis A, Pasteurella multocida, Pseudomonas aeruginosa, Pyrococcus abyssi, Pyrococcus furiosus, Pyrococcus horikoshii, Rickettsia prowazekii, Saccharomyces cerevisiae, Schizosaccharomyces pombe, Staphylococcus aureus, Streptococcus pyogenes, Sulfolobus solfataricus, Synechocystis sp. PCC6803, Thermoplasma acidophilum, Thermotoga maritima, Treponema pallidum, Ureaplasma urealyticum, Vibrio cholerae, and Xylella fastidiosa.