405: Coated Colonizers Counteract Corrosion

This episode: Coating metal surfaces with artificial biofilms
could help keep the surfaces corrosion-free even in the ocean!


Download Episode (6.3 MB, 9.1 minutes)

Show notes:
Microbe of the episode: Hymenopteran ambidensovirus 1

Takeaways
The ocean can be a harsh place for metal surfaces. Between the
water, the salt, and oxygen (near the surface), corrosion is a
common reality. Microbes in the ocean can contribute to this too,
degrading metal structures to obtain energy for their metabolism.
They colonize surfaces in biofilms that can be difficult to
remove, a process called biofouling.

In this study, instead of trying to remove or prevent biofilms on
surfaces, artificial biofilms were created by coating the
surfaces and specially selected bacterial cells with polymers.
This approach did not prevent colonization by other organisms in
the sea, but preliminary results suggested that the community
that did take up residence was not as corrosive as the
communities found on uncoated steel.

Journal Paper:
Rijavec T, Zrimec J, Spanning R van, Lapanje A. 2019. Natural
Microbial Communities Can Be Manipulated by Artificially
Constructed Biofilms. Adv Sci 6:1901408.


Other interesting stories:



Some microbe biofilms can protect outdoor metal sheets from
corrosion

How bacteria can be helpful for growing edible mushrooms
(review)




 


Email questions or comments to bacteriofiles at gmail dot
com. Thanks for listening!


Subscribe: Apple Podcasts, Google Podcasts, Android, or RSS.
Support the show at Patreon, or check out the show
at Twitter or Facebook.