Please enable JavaScript.
Coggle requires JavaScript to display documents.
Curved Bacteria - Coggle Diagram
Curved Bacteria
Spirillum
spirillum same same
twisted shape
a rotating corkscrew type of motility
flagella: bipolar tufts (AT BOTH ENDS)
METABOLISM?
Chemoorganotrophic
Microaerophilic
HABITAT?
Freshwater
Largest species is
Spirillum volutans
Bdellovibrio
small and highly motile cells
the name “bdello” means leech
prey on other bacteria (Gram negative)
mechanism:
stick to the surfaces of their prey cells
penetrate the prey’s wall
replicates in the space between the prey wall and membrane (the periplasmic space)
formed a spherical structure – bdelloplast
form large plaque on the agar surface
subjected to attack by bacteriophages –bdellophages
bdellophages - strictly lytic, single-stranded DNA phages
Anclyobacter
unusual ring shapes
gas vacuolate
heterotroph
unusual ring shapes
gas vacuolate
heterotroph
freshwater environment
Campylobacter
curved microaerophilic bacteria
Campylobacter jejuni
enteritis in human
Campylobacter fetus
animals abortion
Aquaspirillum
spirillum same same
twisted shape
a rotating corkscrew type of motility
flagella: bipolar tufts (AT BOTH ENDS)
EXAMPLE SPECIES
Aquaspirillum magnetotacticum
a directed movement in a magnetic field – magnetotaxis
orient their long axis along the north-south magnetic moment of the field
each cell contain (5 to 40) small crystals of magnetite (Fe3O4) magnetosomes
Helicobacter
curved microaerophilic bacteria
Helicobacter pylori
peptic ulcer
Oceanospirillum
spirillum same same
twisted shape
a rotating corkscrew type of motility
flagella: bipolar tufts (AT BOTH ENDS)