Bacterial diversity in natural aquatic biofilms

AHRickard momcgar2NOmoSPAM at stud.man.ac.uk.invalid
Wed Feb 2 19:16:38 EST 2000


Hi,

I was just wondering if anyone has done (or knows of) any
studies into the bacterial diversity of freshwater biofilms. I
am aware of quite a bit of intense research by David White et
al. in the early 1990's but that is where the buck really ends!

Also, suppose you obtain a number of closely related
species/strains from an established biofilm (eg. borehole/deep
terrestial), what are the chances of these strains having a
common evolutionary progenitor?

In general, multi-species biofilms are considered a norm but in
most of the studies I have come across the biofilms are usually
relatively immature. Okay, someone will no doubtedly mention
human dental plaque but it is not a really mature biofilm. how
about ones that could be potentially hundreds of years old? If a
steady state is achieved with little or no change in the
external environment (going back to deep terrestrial here)
genetic exchange will no doubt occur between bacteria -
potentially causing genetic convergence between unrelated
species?

Just a few questions/thoughts to ponder on! Thanks for your
time and I hope somebody can help.

Cheers,

Alex Rickard
PhD student

* Sent from RemarQ http://www.remarq.com The Internet's Discussion Network *
The fastest and easiest way to search and participate in Usenet - Free!
---


-------------------------------------------------------------------
To reply to the group as well as to the originator, make sure that
the address biofilms at net.bio.net is included in the "To:" field.

See the BIOFILMS homepage at http://www.im.dtu.dk/biofilms for info
on how to (un)subscribe and post to the Biofilms newsgroup.







More information about the Biofilms mailing list