Nutritional Factors Carbon Source Hetero- or auto- Organic compounds or cO2 Nitrogen Source NO3==> NO2==>NH3 to Amino Acids==> Proteins Sulfur ° Phosphorus Trace Elements Fe, some required for growth or virulent Host sideophores bind FeNutritional Factors • Carbon Source – Hetero- or Auto- – Organic compounds or CO2 • Nitrogen Source – NO3- ==> NO2 ==> NH3 to Amino Acids ==> Proteins • Sulfur • Phosphorus • Trace Elements – Fe, some required for growth or virulent – Host sideophores bind Fe