Psychrotolerant/facultative psychrophiles:can grow at 0 to 7 C even though they have optima between 20 and 30 C,and maxima at about35C.耐冷菌 Thermophile Example: Geobacillus Hyperthermophile Hyperthermophile stearothermophilus Example: Example: Mesophile Thermococcus celer Pyrolobus fumarii Example: 60° Escherichia coli 88° 106° Psychrophile 39° Example: Polaromonas vacuolata 4 0 10 20 3040 50 60 70 80 90100 110 120 Temperature(C) 2012 Pearson Education,Inc.Psychrotolerant/ facultative psychrophiles: can grow at 0 to 7 C even though they have optima between 20 and 30 C, and maxima at about 35 C.耐冷菌 Facultative psychrophile