Nonfermentative Bacilli

Question 1

Which tests are most appropriate to differentiate between Pseudomonas aeruginosa and Pseudomonas putida?

Answer 1

Mannitol, Nitrate reduction, and growth at 42C

Question 2

Which test best differentiates Acinetobacter species from Pseudomonas aeruginosa?

Answer 2

Oxidase, motility, and nitrate reduction

Question 3

Which nonfermentative bacillus is usually associated with lung infection related to cystic fibrosis (CF)?

Answer 3

Pseudomonas aeruginosa

Question 4

A nonfermenter recovered from an eye wound is ox pos, motile with polar monotrichous flagella, and grows at 42C. Colonies are dry, wrinkled or smooth, buff to light brown, and are difficult to remove from the agar. In which DNA homology group should this organism be placed?

Answer 4

Pseudomonas stutzeri