The optimum temperature is always nearer the maximum than the minimum. Enzymatic reactions occurring at maximal possible rate Optimum ajel Enzymatic reactions occurring at increasingly rapid rates Minimum Maximum Temperature Membrane gelling;transport Protein denaturation;collapse processes so slow that growth of the cytoplasmic membrane; cannot occur thermal lysis 2012 Pearson Educaticn,Inc
The optimum temperature is always nearer the maximum than the minimum
10femperature classes of organisms生物的温度类型 @Psychrophilel嗜冷菌 @Psychrotrophs//Facultative psychrophilei耐冷菌/兼性 嗜冷菌 Mesophile嗜温菌 Thermophilel嗜热菌 Hyperthermophile极端嗜热菌 No.7 Shanghai Jiao Tong University
No.7 Shanghai Jiao Tong University 5.10.2Temperature classes of organisms 生物的温度类型 Psychrophile嗜冷菌 Psychrotrophs/ Facultative psychrophile耐冷菌/兼性 嗜冷菌 Mesophile嗜温菌 Thermophile嗜热菌 Hyperthermophile极端嗜热菌
Temperature classes Psychrophiles:growth well at 0 C and have an optimum growth temperature of 15 C or lower;the maximum is around20C.嗜冷菌 Thermophile Example: Geobacillus Hyperthermophile Hyperthermophile stearothermophilus Example: Example: Mesophile Thermococcus celer Pyrolobus fumarii Example: 60° Escherichia coli 88° 106° yiMO5 Psychrophile 39° Example: Polaromonas vacuolata 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature(C) 2012 Pearson Education.Inc
Temperature classes Psychrophiles: growth well at 0 C and have an optimum growth temperature of 15 C or lower; the maximum is around 20 C.嗜冷菌
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
Mesophiles:grow optima around 20-45 C;they often have a temperature minimum of 15-20C.Their maximum is about 45C or lower. 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
Mesophiles: grow optima around 20-45 C; they often have a temperature minimum of 15-20C. Their maximum is about 45C or lower