Phormidium cianobacterium....video

fpelectronica · Post by **fpelectronica** » Tue Sep 21, 2010 2:41 pm

Hello
This video shows the typical helical loop of the cyanobacterium Phormidium

http://www.youtube.com/watch?v=dmj6D61nBvc
Francisco

Mitch640 · Post by **Mitch640** » Tue Sep 21, 2010 2:58 pm

That's amazing. Is it classed as a plant or animal? How does it move> these things are mind boggling. As always, more questions than answers.

rjlittlefield · Post by **rjlittlefield** » Tue Sep 21, 2010 3:58 pm

Francisco, excellent video.

Mitch, see http://silicasecchidisk.conncoll.edu/Lu ... _Main.html and http://en.wikipedia.org/wiki/Cyanobacteria. Quoting from Wikipedia:

Cyanobacteria (also known as blue-green algae, blue-green bacteria, and Cyanophyta) is a phylum of bacteria that obtain their energy through photosynthesis. The name "cyanobacteria" comes from the color of the bacteria (Greek: κυανός (kyanós) = blue).

The filaments are formed by many individual cells stuck end to end. The page at conncoll.edu notes that

The filaments move by gliding, creeping, rotating, or oscillating both inside and outside of the sheaths.

But the precise mechanism of movement is not described.

If somebody has more information about the movement, I would be interested also.

--Rik

ABEL · Post by **ABEL** » Wed Sep 22, 2010 1:30 am

Very nice¡¡.

I like much the movement of these cyanobacteria. Thanks ¡

fpelectronica · Post by **fpelectronica** » Wed Sep 22, 2010 9:21 am

Thanks for your comments
Thanks Rik for the information
The mechanism of movement of these cyanobacteria is not yet known exactly.
There are some theories
"Due to the production of mucilage (the movement is confirmed by the species that produce muculage)
"For rhythmic contraction of trichome
Francisco