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Which of these bacteria grow red?
So I have an unknown bacterial culture that is known to be a gram negative bacillus that does not form endospores and does not respond to the negative stain. From this data, I've narrowed the identity of this bacteria to:
Serratia marcescens
Serratia rubidaea
Providencia stuartii
Pseudomonas stutzeri
The last piece of data that I have is that the bacterial culture was red in color after incubation at both 30 and 37 degrees celcius. This leads me to think this is S. marcescens, but I believe S. marcescens only turns red at 30 degrees. However, the incubation was done by my partner, who is fairly unreliable. Am I right in this, or is it one of the other bacteria species?
