Range of Microorganisms PDF

MICROBIAL ECOLOGY – LECTURE 2 C. METABOLIC DIVERSITY RANGE OF MICROORGANISMS 1. MICROBIAL DIVERSITY A. MORPHOLOGICAL DIVERSITY D. ECOLOGICAL DIVERSITY E. BEHAVIORAL DIVERSITY - mode of...

MICROBIAL ECOLOGY – LECTURE 2 C. METABOLIC DIVERSITY RANGE OF MICROORGANISMS 1. MICROBIAL DIVERSITY A. MORPHOLOGICAL DIVERSITY D. ECOLOGICAL DIVERSITY E. BEHAVIORAL DIVERSITY - mode of action, growth phase, sporulation (adaptation to survive, they can be a dormant cyst or pore) - bacteria can sends or receive chemical and electrical signals - Myxococcus - propagate signals to execute membrane fusion and the exchange of large amounts of outer membrane (OM) components between cells B. STRUCTURAL DIVERSITY F. EVOLUTIONARY DIVERSITY  Acidophiles 0 to 5.5 pH (low pH, acidic) Neutrophiles 5.5 to 8 ph (neutral) Alkaliphiles 8 to 11.5 pH (high pH, alkali-loving) CLASSIFICATION OF BACTERIA ON THE BASIS OF TEMPERATURE REQUIREMENTS Psychrophiles- 0 - 15℃ (opt- 15℃) Psychrotrophs – 0 ℃, (opt 20 - 30℃) Mesophiles- 25-40℃ (opt 37℃) Thermophiles- best at >45℃, have saturated fatty acids in membrane to prevent liquidity Hyperthermophiles- opt >80℃, archaeo bacteria. Ex: 2. BACTERIAL DIVERSITY Thermodesulfobacterium sp. Classification Of Bacteria On The Basis Of The Cell Wall CLASSIFICATION OF BACTERIA ON THE BASIS OF SALT And Staining Reaction AND TOLERANCE -wall-less cell - Mycoplasma Non-halophiles