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33 Cards in this Set
- Front
- Back
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Proteobacteria
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Gram negative, chemoheterotrophic
common photosynthetic ancestor alpha, beta, gamma, delta, epsilon |
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Alpha Proteobacteria
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can grow in low levels of nutrients, agriculturally important
have prosthecae Azospirillum, Rickettsia, Caulobacter, Rhizobium, Agrobacterium tumefaciens, Nitrobacter and Nitrosomonas |
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Azospirillum
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found in soil
Fixes atmospheric nitrogen N2 --> NH4 |
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Rickettsia
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rod-shaped
transmitted to humans by insects and ticks Rickettsia rickettsii causes Rocky Mountain Spotted Fever Obligate intracellular parasite |
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Caulobacter
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Divides - one cell has stalk, other cell has flagellum and moves to new location. Then becomes a stalked cell. Stalk anchors cell.
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Rhizobium
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Fixes atmospheric nitrogen
converts N2 to NH4 which plants use |
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Agrobacterium tumefaciens
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plant pathogen causes crown gall
cell inserts a bacterilal plasmid into DNA plant cell |
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Nitrosomonas
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oxidizes NH4+ --> NO2-
beta proteobacteria |
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Nitrobacter
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oxidizes NO2- --> NO3-
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Beta Proteobacteria
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use nutrients (H2, ammonia, methane) that diffuse away from areas of anaerobic decomposition of organic matter
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Thibacillus
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sulfur-oxidizing
H2S |
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Neisseria
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Neisseria gonorrhoeae the causative agent of the STD gonorrhea (aka--the clap)
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gonococcus
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causes Gonorrhea
Neisseria gonorrhoeae gram - diplococci |
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pelvic inflammatory disease (PID)
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occurs in females when gonorrhea is untreated
organism goes to uterus and to the fallopian tubes |
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ophthalmia neonatorum
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infection in eyes of newborn of infected mother
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Gamma Proteobacteria
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Pseudomonas aeruginosa
Vibrio cholerae Enterobacteriales Beggiatoa alba Yersinia pestis |
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Pseudomonadales
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Gram negative aerobic rods or cocci
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Pseudomonas aeruginosa
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opportunistic pathogen
can cause pneumonia and nosocomial infetions metabolizes large number of substrates |
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Vibrio cholerae
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causative agent of cholera
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Enterobacteriales
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faculative anaerobic rods
enterics because inhabit intestinal tract |
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Escherichia coli
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ubiquitous enteric strains of which can be pathogenic
O157:E7--EHEC |
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Salmonella
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a single species, S. enterica, is divided into 2400 serovars. common cause of food infection
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serovars
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serotypes based on cell surface antigens
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biovars
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serovars are divided into biotypes based on biochemical properties
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Beggiatoa alba
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oxidizes H2S to SO4
grows in/on stagnant water and sulfur springs first studied by Winogradsky organism can use something else as an e- acceptor instead of complex organic compound |
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Yersinia pestis
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bubonic plage
gram-negative rod |
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bubo
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swollen lymph node
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pneumonic plague
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organism gets to lungs. goes to person to person via respiratory system
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Delta Proteobacteria
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include some predatory bacteria. prey on other bacteria
also contribute to the sulfur cycle Bdellovibrio and Desulfovibrio |
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Bdellovibrio
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attaches to a Gram negative bacterium, passes through the outer membrane, and replicates in the periplasm
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Desulfovibrio
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sulfur reducer. found in anaerobic sediments
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Epsilon Proteobacteria
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helical/vibrioid shaped
helicobacter pylori |
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Helicobacter pylori
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causes peptic ulcers and potentially gastric cancer
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