IUBio Biosequences .. Software .. Molbio soft .. Network News .. FTP

wierd bacteria update

Trond Erik Vee Aune trondaun at biotech.NOSPAM.ntnu.no
Mon Mar 17 12:22:36 EST 2003


I've now done some more work on the bacteria.

The first picture shows a LB plate with 6% agar:
I spread the colonies on the area indicated with the red line. As you 
can see the higher concentration of agar keep the bacteria from 
spreading almost totally. A few colonies are growing just over the line, 
but it's much less than on 2% agar. Also the colonies are forming close 
to eachother, like continous growth, on 2% agar they would form discrete 
colonies. The growth seem homogenous and it's not possible to see 
different fenotypes.

What I've done with this plate after this picture was taken, is to 
spread out some other bacteria perpendicular to the x-bug growth to look 
at the inhibition pattern.

The next picture shows the glass plates after Gram staining:
I used E.coli for control. As you can see I had more cells with E.coli, 
but  the color is the same. It looks as my bug x is Gram negative.

I took a few pictures of the bug through the microscope as suggested 
earlier, it was difficult to focus, but it should give some hints to the 
stain and the morphology of the bacteria. All pictures are with 100x 
magnifying and with oil on the lens.

The first picture is of the E.coli:
The next shows the x bug:
It's a little unfocused but it should be possible to see that it is 
longer than E.coli. Much more stretched out. It also has the same color 
as E.coli after staining.
The last picture shows the same:

Tomorrow I'll order the primers needed to do the 16s sequencing, and 
hopefully I'll have some pictures of the inhibition pattern to show you 

Trond Erik

More information about the Microbio mailing list

Send comments to us at biosci-help [At] net.bio.net