Enevold.Falsen at alinks.se Enevold.Falsen at alinks.se
Sun Mar 3 01:11:32 EST 1996

I have spent 30 years on bacterial identification. We have only 
experience with 'heterotrophic mesophilic groups'

Today, I would say there are 3 kinds of approaches:

1. 16S rRNA sequencing. - The rich man's choice
2. Phenotyping or chemotyping
   A: 10-40 tests - Routine
   B: 30-200 tests - Reference laboratories.
3. Miscellanous methods - When you know what you are looking for.
   Serology (Salmonella), selective medium (Legionella), PCR      
   (Mycobacterium), etc.

The CCUG is holding >35000 strains and we have very large 
databases and own softwares for probabilistic calculations. We 
therefore stick to item 2B = traditional methods, but we 
appreciate help from people sequencing (200 to 500 bp may be 

There are excellent books, but the taxonomy is rapidly changing 
and expanding, and we prefer to examine as many reference strains 
as possible, not only the type strains.

Some bacteria can be immediately identified by the colony 
morphology or by the smell. Some species can only be identified 
with DNA:DNA-hybridization.

We find SDS-PAGE a good complement for sorting things out.

Welcome with more specific questions.

E. Falsen

______________________________ Reply Separator _________________________________
Author:  SE {tlambott at tic.bisman.com} at UUCP
Date:    1996-02-29 06.25

I am trying to find information on the various methods of bacterial 
identification.  If anyone knows of the best and most current place to 
find this information--be it on the internet or in a book--it would be 
most appreciated.  Please respond via email to 
tlambott at tic.bisman.com.  Thank you!


************ CCUG = Bacterial strains & Identification *************
Enevold Falsen, Civ.ing. - Curator            Voice: +46.31.60 46 25
Culture Collection, University of Goteborg      Fax: +46.31.82 54 84
Guldhedsg 10, S-413 46 Goteborg, Sweden      IN: <ccugef at ccug.gu.se>

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