Cyanobacterium Oscillatoria high speed video

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carlos.uruguay
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Cyanobacterium Oscillatoria high speed video

Post by carlos.uruguay »

Phase contrast
Oblique polarized light
20X and 40X objectives
Panasonic GH4 camera
Video link:
https://www.youtube.com/watch?v=Z7BZDCKwWOw
Video frame only for preview (to observe the movement, watch the video):
Image
Regards
carlos

Jacek
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Post by Jacek »

Very nice :D

carlos.uruguay
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Post by carlos.uruguay »

Thanks!
They always move forward and then they recede

WalterD
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Post by WalterD »

Very interesting clip! It's almost like it has got its own propulsion.

carlos.uruguay
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Post by carlos.uruguay »

WalterD wrote:Very interesting clip! It's almost like it has got its own propulsion.
Thanks Walter. Yes, all the times I have observed them, they move by turning, they advance and then they retreat. I do not know the mechanism by which they manage to move.
See:
https://www.youtube.com/watch?v=VPNj7n6lTf8

Sumguy01
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Post by Sumguy01 »

:smt038 Very nice
Thanks for sharing.

Bruce Taylor
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Post by Bruce Taylor »

carlos.uruguay wrote:I do not know the mechanism by which they manage to move.
Nice video, Carlos!

The old theory for "gliding motility" was that it was accomplished through the secretion of "polysaccharide slime." However, recent work suggest that polysaccharide secretions provide a sort of track for the colony to glide along, but the motility is provided by small filaments called "Type IV pili", which are repeatedly extended and retracted by the cell, like tiny "grappling hooks."

http://onlinelibrary.wiley.com/doi/10.1 ... 13242/full
It Came from the Pond (Blog): http://www.itcamefromthepond.com/

carlos.uruguay
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Post by carlos.uruguay »

Bruce Taylor wrote: Nice video, Carlos!

The old theory for "gliding motility" was that it was accomplished through the secretion of "polysaccharide slime." However, recent work suggest that polysaccharide secretions provide a sort of track for the colony to glide along, but the motility is provided by small filaments called "Type IV pili", which are repeatedly extended and retracted by the cell, like tiny "grappling hooks."
http://onlinelibrary.wiley.com/doi/10.1 ... 13242/full
Tnahks Burce!!!!!!!!!!!!!!

Smokedaddy
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Post by Smokedaddy »

Interesting video, nice job Carlos.

carlos.uruguay
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Post by carlos.uruguay »

Thanks!

GaryB
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Post by GaryB »

Excellent! That phase shot was gorgeous.

carlos.uruguay
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Post by carlos.uruguay »

Thanks Gary!

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