Lectures 24-30 Flashcards
Spirochetes
5 genera: Spirochaeta, Christispira, Treponema, Borrelia, Leptospira.
Gram neg, outer sheath surrounds protoplasmic cylinder and periplasmic flagella.
Spirillum
Genus, among largest bacteria, marine enviromemts, recycling matter
Campylobacter
Genus, C. jejuni ->causes gastroenteritis
this gram neg, penetrates mucous membrane of small intestine.
Bdellovibrio
Genus, parasitic towards gram neg, lives in the periplasmic space.
Treponema pallidum
syphillis- associated w/DNA probe
causes tabes dorsalis
DNA Probe
Small segment of DNA that are specific and useful with organisms that are hard to culture in lab.
Treponema pertenue
yaws, non sexual
Treponema carateum
hyperpigmentation, non sexual
Borrelia burgdorferi
lyme disease via tick bite
Leptospira inteerogans
leptospirosis, flu like symptons and liver disease
Pseudomonadaceae
gram neg polar flagellated straight or curved rods.
Use variety carbon sources–> environmental clean up.
P. aeruginosa
common soil and water organism, burn victims susceptible.
Two pigments pyoverdin(siderophore) and pyocyanin (bluegreen pig) that grows at 42 degrees Celsius.
Oxidase positive
P. putida
non pathogenic, cleanup
P. syringe
plant pathogen
P. cepacia
pathogen found in humans and plants
X. campestris
tomato pathogen
X. campestris pathovar citri
causes citrus canker but not in Florida
Methylomonadaceae
Family composed of Gerea: Methylomonas,Methylococcus use 1-C compounds ie methane methanol formaldehyde.
Azotobacteraceae
Azotobacter-large ovoid cells with high respiration rate
nonsymbiotically fixes N
Rhizobiaceae
Rhizobium
symbiotically fixes nitrogen into ammonia in legumes, beans etc.
Oxygen sensitive nitrogenase
Neisseria gonorrhoeae
gram negative aerobic coccus, sexually transmitted.
Oxidase positive and require increase co2 to grow along with Aacids, vitamins, hemoglobin.
Neisseria meningitidis
causes meningitis in children.
Oxidase positive and require increase co2 to grow along with Aacids, vitamins, hemoglobin.
Brucella
infectious abortion in cattle
Bordetella
whooping cough
Francisella
tularemia, infectious disease in rabbits, transmittable to humans
Bacteroides
anaerobic. most common organism in human feces
Fusobacterium
anaerobic. common in oral cavity causes periodontal disease.
Desulfovibrio
anaerobic bacteria reduce sulfur, corrodes iron pipe and produces hydrogen sulfide gas.
Rickettsia and Chylamydia
Bacteria that are obligate intracellular parasites. They contain both DNA and RNA, have a cell wall similar to the Gram negative cell. They divide by binary fission and are susceptible to antibiotics. The Rickettsia are transmitted through the bite of a louse, flea, tick, or mite.
Pasteurellaceae
Black Plague aka Yersina pestis
Rocky Mountain Spotty Fever
found in SE, flu-like, treated with tetracycline
R-typhus
caused by louse. fatal.
C psittacosis
contact w/infected birds
C trachomatis
infects eye and degrades cornea, fatal.
Mycoplasmas
smallest free living organisms. Do not have cell wall, do not produce there own sterols.
Mycoplasma pneumoniae- causes primary atypical pneumonia.
Penicillin is NOT effective.
Streptococcus pyogenes
gram positive cocci.
Causes scarlet and rheumatic fever, endocarditis, pneumonia, pharyngitis, necrotizing fascitis
Staphylococcus
gram positive cocci, catalase positive.
S. epidermis- nonpath
S.aureus- causes impetigo, osteomylitis, toxic shock, food poisoning.
Micrococcus
gram positive cocci in tetrads.
Respire glucose do NOT ferment it.
Bacillus sp.
gram positive aerobic rods.
Produce enzymes and antibiotics, and are biopesticides.
B. anthracis- anthrax
Clostridium
Gram positive aerobic rods.
Causes botulism, gas gangrene, tetnus.
Lactobacillus
Yogurt fermentation
Corynebacterium diphtheriae
Irregular nonsporulating G positive rod.
Contain polyphosphate granules.
Many are non pathogenic.
Propionibacterium
swiss cheese fermentation and silage.
Mycobacterium
rod shaped to filamentous bacteria
ACID FAST->huge amount of lipids in cell wall
Cause tuberculosis and leprosy
Oscillatoria
oxygenic photosynthetic bacteria…Red Sea
Prochlorophyta
aka picoplankton Along with cyanobacteria a type of oxygenic photosynthetic bacteria.
Contain chlorophyll a and b, do not have phycobilins which is why they appear green and not blue green.
Have thylakoids with double membranes (cyano-single)
Chemolithotrophic Aerobic Bacteria
Nitrifiers, colorless S bacteria, obligate hydrogen bacteria, Fe/Mn oxidizers, magnetic bacteria.
Nitrifiers
These bacteria oxidize ammonia to nitrite and nitrite to nitrate.
Ammonia to nitrite, nitrosfying bacteria, Nitrosomonas, Nitrosospira, Nitrosococcus, Nitrosolobus.
Nitrifying bacteria, nitrite oxidized into nitrate, Nitrobacter, Nitrospina, Nitrococcus.
Thiobacillus ferrooxidans
Usually found in acid environments, low pH. The oxidize reduced sulfur to sulfate. Oxidizes reduced sulfur.
Hydrogen oxidizer bacteria
Hydrogenobacter, uses H2 as a electron donor and O2 as an electron acceptor to produce H2O.
Bacteria that oxidize metals or make metal deposits
Siderocapsa, Siderococcus
Aquaspirillum
Ex of Magnetotatic bacteria.
Demonstrate directed movement in magnetic field.
Synthesize intracellular crystals of magnetite
budding bacterium
Hyphomicrobium
sheathed bacteria
Gram negative bacteria arranged as chains within filaments surrounded by outer sheaths. Live in sewage, reproduce by binary fission with the release of daughter cells called swarmer cells, Sphaerotilus.
Cytophaga
Nonphotsynthetic non fruiting gliding bacteria that digest cellulose chitin agar and sometimes is a fish pathogen
Beggiatoa
Nonphotsynthetic non fruiting gliding bacteria with long filaments lives in sulfur springs