characteristcs of selected gram negative bacteria (special characteristics only)

Azospirillum

Nitrogen fixers

Nitrobacter

Nitrofying bacteria

Purple nonsulfur bacteria

Anoxygenic pathogens

Rickettsia

Intracellular pathogens

Brucella

Coccobacilli

Ehrlichia

Live inside white blood cells

Acetobacter

Synthesize acetic acid

Glucanobacter

Prosthecate bacteria

Caulobacter

Causes galls in plants; vectors

Agrobacterium

For gene transfer in plants

Nitrosomonas

Nitrifying bacteria

Neisseria

Diplococci

Thiobacillus

Colorless sulfur bacteria

Zoologea

Used in sewage treatment

Sphaerotilus

Block sewage treatment pipes

Spirillum

Amphitrichous polar flagella

Legionella , Coxiella

Intracellular pathogens

Glycolysis facultative anaerobes

Facultative anaerobes that catabolic carbohydrates via glycolysis and the pentose pathway

Pseudomonas

Aerobes that catabolic carbohydrates via Enter-Diudoroff and pentose phosphate pathwyas

Azobacter, Azomonas

Nitrogen fixers not associated with plant roots

Desulfovibrio

Sulfate reducres

Bdellovibrio

Pathogens of gram-negative bacteria

Myxobacteria

Reproduce by forming differentiated fruiting bodies

Camplylobacter

Curved rods

Helicobacter

Spirals

Chlamydia

Intracellular pathogens; lack peptidoglycan

Treponema; Borrelia

Mobile by axial filaments

Bacteroides

Anaerobes that live in animal colons

Cytophaga

Digest complex polysaccharides

Enterobacteriaceae

Straight ross; oxidase negative e; peritrichous flagellation or nonmotile

Vibrionaceae

Vibrioa; oxidase, polar flagella

Pasteurellaceae

Concise or straight rods, oxidase positive, nonmotile