Lysis of Sarcina by Archangium violaceum.
The myxobacteria are able to lyse and feed on the released remains of
a variety of microbes, including both eukarya and gram positive and gram
negative bacteria. They do so by means of the excretion of a battery of
powerful enzymes, including proteases, lipases, lysozyme and nucleases.
Note the lysis of the Sarcina cells at a distance (this is characteristic
of gram positive prey but not of gram negative ones). Note also the apparent
ability of the myxobacteria to head more or less directly for the clumps
of Sarcina, implying some sort of tactic ability.
a more detailed discussion of the lytic ability of the myxobacteria see:
Rosenberg, E. and M. Varon. Antibiotics and lytic enzymes. pp.109-125 in
Myxobacteria:Development and Cell Interactions. 1984 (Ed) E. Rosenberg.
Please note: Because of the size of this
file, downloading it via a slower modem can take some time. Please be patient.
Details in the movie are best seen if your monitor is set to the highest
number of colors possible. If you notice that display of the movie is very
blotchy, you may find much improvement if you switch your monitor setting
to GRAYS, instead of color, to view the movies.