We're doing bacterial cultures in science, and I have do identify a certain culture. I found it on my instrument mouthpiece, and it's Gram+, catalase+, and rod shaped, so I've narrowed it down to staph. and micrococcus. What genus & species do you think the bacteria is, given the environment and tests? I'm sorry it's kind of basic, I was going to do an aerobic/anaerobic test today which would definitely help, but I didn't get to it. Thanks.
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Definitely not staphylococcus and micrococcus if it's rod-shaped. Staphylococcus sp. is round-shaped in clusters (cocci = round whereas bacilli = rod).
4 important genera of gram positive bacilli that I know are Bacillus, Clostridium, Corynebacterium and Listeria. All are catalase +ve except Clostridium.
Clostridium are aerobic while the rests are facultative aerobic.
If you could do a Malachite green endospore stain, you could narrow it down to that Bacillus and Clostridius form spores while Corynebacterium and Listeria do not. And if possible describe more on the colony form.
4 important genera of gram positive bacilli that I know are Bacillus, Clostridium, Corynebacterium and Listeria. All are catalase +ve except Clostridium.
Clostridium are aerobic while the rests are facultative aerobic.
If you could do a Malachite green endospore stain, you could narrow it down to that Bacillus and Clostridius form spores while Corynebacterium and Listeria do not. And if possible describe more on the colony form.
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I think you can identify the bacteria if you look at the effects it does and then comparing it to other bacterias that already have been identify! The you'll know how to figure out a solution to your problems! hope it helps! :) :) :) :) :D
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Could you do additional tests? If so try a coagulase test or a Mannitol Salt agar. S. aureus should come up positive for both. It sounds like S. aureus is your best answer though.