What is the Difference Between E. Coli and Pseudomonas Aeruginosa?
🆚 Go to Comparative Table 🆚E. coli and Pseudomonas aeruginosa are both gram-negative, rod-shaped, and motile bacteria, but they have some key differences in classification, habitat, and physiology:
- Classification:
- E. coli belongs to the genus Escherichia and the family Enterobacteriaceae.
- Pseudomonas aeruginosa belongs to the genus Pseudomonas and the family Pseudomonadaceae.
- Habitat:
- E. coli is a facultative anaerobic bacterial species and is part of the normal gut flora.
- Pseudomonas aeruginosa is an aerobic bacterial species and is part of the normal skin flora.
- Physiology:
- E. coli is a facultative anaerobe, meaning it can grow in both aerobic and anaerobic conditions.
- Pseudomonas aeruginosa is an obligate aerobe, meaning it requires oxygen to grow.
- Flagella:
- E. coli has peritrichous flagella, meaning they are found all over the cell surface.
- Pseudomonas aeruginosa has a single flagellum at the polar end of the cell.
Both bacteria can cause infections and diseases, with E. coli being the most frequently implicated bacteria in urinary catheter-related infections, while Pseudomonas aeruginosa causes diseases in animals and plants and is commonly found in skin flora, water, and soil.
Comparative Table: E. Coli vs Pseudomonas Aeruginosa
E. Coli and Pseudomonas Aeruginosa are both encapsulated, rod-shaped, gram-negative bacteria, but they have some key differences in their classification, family, genus, and other characteristics. Here is a table summarizing the differences between E. Coli and Pseudomonas Aeruginosa:
Characteristic | E. Coli | Pseudomonas Aeruginosa |
---|---|---|
Scientific Name | Escherichia coli | Pseudomonas aeruginosa |
Family | Enterobacteriaceae | Pseudomonadaceae |
Genus | Escherichia | Pseudomonas |
Habitat | Found in food, intestines of people and animals, and surrounding environments | Found in soil and most man-made surroundings |
Oxygen Requirement | Facultative anaerobic | Aerobic |
Flagella | Peritrichous flagella | Single flagellum |
Respiration | Ferments lactose and is oxidase-negative | Does not ferment lactose and is oxidase-positive |
Color | Not mentioned | Blue-greenish due to the pigment Pyoverdin and Pyocyanin |
Habit | Mesophilic, found in normal gut flora | Obligate aerobe, found in normal skin flora |
Virulence Factors | Exotoxin A, phospholipase C, endotoxin | Not mentioned |
Both bacteria are known to cause infections and disorders, but some strains of E. Coli are harmless, whereas Pseudomonas Aeruginosa is known to thrive under both low-oxygen and normal conditions.
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