M2:T7: survival of microbes

• endospores

  • most important for pro survival
  • structures in vegative cells
  • dormat differented cell
  • resistant to extreme heat, radiation, chemicals
• why endospores are important

  1. food industry
  2. food posoniing and spoil age
  3. wound infections
  4. bioterrorism
  5. pesticides
• the prcoess if cells are unfavourable conditions

  1. produce spores
  2. cell wall dies and spores are releases
  3. until conditions are back to favourable
• structure and resistance of spores

  • increase [] of calcium dipcolonic acid and binding proteins stabilises and protects DNA
  • Cortext removes water from interior
  • spore coat: impermeable and resistance to boiling water
• cysts

  • format thick walled forms
  • resist desiccation and dehydration not hear
  • layers and layers of cell wall around it
• storage bodies

  • inclusion bodies of bac, store chemicals for later use