Everything about Arthrobacter totally explained
Arthrobacter (from the Greek, "jointed small stick”) is a
genus of
bacteria that's commonly found in soil. All
species in this genus are
Gram-positive obligate aerobes that are
rods during
exponential growth and
cocci in their
stationary phase.
Colonies of
Arthrobacter have a greenish metallic center on
mineral salts pyridone broth incubated at 20°
C. This genus is distinctive because of its unusual habit of "snapping division" in which the outer bacterial
cell wall ruptures at a joint (hence its name). Microbiologists refer to the type of cell division in which rods break into cocci as
reversion. Under the microscope, these dividing cells appear as chevrons ("V" shapes). Other notable characteristics are that it can use
pyridone as its sole
carbon source, and that its cocci are resistant to
desiccation and starvation.
Life cycle
Induction phase (rods and cocci are mixed), Bacillary phase (motile rods predominate during exponential growth), Reversion phase (rods break into cocci) -> Induction...
Further Information
Get more info on 'Arthrobacter'.
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