seeking opinion on an unknown

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sully325
Garter
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Posts: 1
Joined: Fri Dec 02, 2011 12:20 am

seeking opinion on an unknown

Post by sully325 » Tue Dec 06, 2011 6:11 pm

Hello,

I am performing many biochemical tests for a morphological unknown. I am filling out the dichotomous key and would just like opinions as to if I am on the right track.

Thanks!

So far, I have:

Gram Negative Rods
Motility negative
MR-VP positive
Citrate positive
Indole Positive

My choices are :
C freundii
E aerogenes
S flexneri
K pneumonia
P vulgaris
S enteriditis

I am leaning towards E. aerogenes as it is fitting well with the above tests according to Bergey's manual. Anything else I can perform?

Cat
King Cobra
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Joined: Thu Feb 14, 2008 7:40 pm

Post by Cat » Sat Dec 10, 2011 7:12 pm

I would suggest you repeat your tests. According to your results it's not any of your choices.

C freundii is out as it's indole -ve.
E aerogenes is out as it's indole -ve.
S flexneri is out as it's VP -ve.
K pneumonia is out as it's MR -ve.
P vulgaris is out as it's citrate -ve.
S enteriditis is out as it's indole -ve.

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