Rhodospirillum rubrum: Difference between revisions
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==Description and significance== | ==Description and significance== | ||
Found in mud, pond water, & sewage | Found in mud, pond water, & sewage | ||
DOES NOT infect humans or animals | DOES NOT infect humans or animals | ||
Mesophile, optimum temperature 25-30 C | Mesophile, optimum temperature 25-30 C | ||
Gram-negative, mostly unsaturated, some saturated fats in cell wall | Gram-negative, mostly unsaturated, some saturated fats in cell wall | ||
Has multilayered outer envelops | Has multilayered outer envelops | ||
Complex pigments call “Carotenoid” and “BacteriocholophyII” are found in relatively large particles called “Chromatophores” which gives the bacteria it’s distinctive color. | Complex pigments call “Carotenoid” and “BacteriocholophyII” are found in relatively large particles called “Chromatophores” which gives the bacteria it’s distinctive color. | ||
Electron microscopy revel that the “Chromatophore” are flatten disk | Electron microscopy revel that the “Chromatophore” are flatten disk | ||
Purple colored under anaerobic conditions, Colorless in aerobic | Purple colored under anaerobic conditions, Colorless in aerobic | ||
Carotenoids give purple-red color | Carotenoids give purple-red color | ||
they help in light absorption for photosynthesis | they help in light absorption for photosynthesis | ||
Found in invaginations of the cytoplasmic membrane | Found in invaginations of the cytoplasmic membrane | ||
Polarly Flagellated | Polarly Flagellated | ||
Spiralla | Spiralla | ||
Length 3-10 um, Width 0.8-1.0 um | Length 3-10 um, Width 0.8-1.0 um | ||
Facultative anaerobe | Facultative anaerobe | ||
Can use alcoholic fermentation or aerobic respiration | Can use alcoholic fermentation or aerobic respiration | ||
Photosynthesis is active under anaerobic conditions, but is genetically suppressed in the presence of O2 | Photosynthesis is active under anaerobic conditions, but is genetically suppressed in the presence of O2 | ||
O2 is not a byproduct of photosynthesis, sulfur is | O2 is not a byproduct of photosynthesis, sulfur is | ||
Can grow autotrophically or heterotrophically when phototrophic | Can grow autotrophically or heterotrophically when phototrophic | ||
Oxidizes carbon monoxide | Oxidizes carbon monoxide | ||
Can use sulfide (AT LOW CONCENTRATIONS) as an electron donor in CO2 reduction | Can use sulfide (AT LOW CONCENTRATIONS) as an electron donor in CO2 reduction | ||
Contains no chlorophyll a (absorption spectra 430-662) | Contains no chlorophyll a (absorption spectra 430-662) | ||
contains chlorphyll b (absorption spectra 660-680 nm) and bacteriochlorophylls (800-925 nm) | contains chlorphyll b (absorption spectra 660-680 nm) and bacteriochlorophylls (800-925 nm) | ||
advantageous to use more energy of electromagnetic spectra | advantageous to use more energy of electromagnetic spectra | ||
Nitrogen fixing bacteria | Nitrogen fixing bacteria | ||
Converts atmospheric nitrogen gas to ammonia | Converts atmospheric nitrogen gas to ammonia | ||
N2 --(nitrogenase)--> NH4+ | N2 --(nitrogenase)--> NH4+ | ||
Biotech uses | Biotech uses | ||
Consumption | Consumption | ||
Source of animal food and agricultural fertilizer | Source of animal food and agricultural fertilizer | ||
Biological plastic production from precursors of poly-hydroxy-butric-acid | Biological plastic production from precursors of poly-hydroxy-butric-acid | ||
Biological hydrogen fuel (evolution of nitrogenase) | Biological hydrogen fuel (evolution of nitrogenase) | ||
Vitamin production | Vitamin production | ||
Academia | Academia | ||
Model system of light to chemical energy conversion and for nitrogen fixation pathways | Model system of light to chemical energy conversion and for nitrogen fixation pathways | ||
Subject of radiation resistance studies | Subject of radiation resistance studies | ||
Cell free systems including photosynthesis and ATP synthesis | Cell free systems including photosynthesis and ATP synthesis | ||
Revision as of 20:41, 4 October 2011
A Microbial Biorealm page on the genus Rhodospirillum rubrum
Classification
Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales; Rhodospirillaceae; Rhodospirillum; Rhodospirillum rubrum
Higher order taxa
Domain; Phylum; Class; Order; family [Others may be used. Use NCBI link to find]
Species
|
NCBI: Taxonomy |
Rhodospirillum rubrum
Description and significance
Found in mud, pond water, & sewage
DOES NOT infect humans or animals
Mesophile, optimum temperature 25-30 C Gram-negative, mostly unsaturated, some saturated fats in cell wall
Has multilayered outer envelops
Complex pigments call “Carotenoid” and “BacteriocholophyII” are found in relatively large particles called “Chromatophores” which gives the bacteria it’s distinctive color. Electron microscopy revel that the “Chromatophore” are flatten disk Purple colored under anaerobic conditions, Colorless in aerobic
Carotenoids give purple-red color
they help in light absorption for photosynthesis
Found in invaginations of the cytoplasmic membrane
Polarly Flagellated Spiralla Length 3-10 um, Width 0.8-1.0 um Facultative anaerobe
Can use alcoholic fermentation or aerobic respiration
Photosynthesis is active under anaerobic conditions, but is genetically suppressed in the presence of O2
O2 is not a byproduct of photosynthesis, sulfur is
Can grow autotrophically or heterotrophically when phototrophic
Oxidizes carbon monoxide
Can use sulfide (AT LOW CONCENTRATIONS) as an electron donor in CO2 reduction
Contains no chlorophyll a (absorption spectra 430-662)
contains chlorphyll b (absorption spectra 660-680 nm) and bacteriochlorophylls (800-925 nm)
advantageous to use more energy of electromagnetic spectra
Nitrogen fixing bacteria
Converts atmospheric nitrogen gas to ammonia
N2 --(nitrogenase)--> NH4+
Biotech uses
Consumption
Source of animal food and agricultural fertilizer
Biological plastic production from precursors of poly-hydroxy-butric-acid
Biological hydrogen fuel (evolution of nitrogenase)
Vitamin production
Academia
Model system of light to chemical energy conversion and for nitrogen fixation pathways
Subject of radiation resistance studies
Cell free systems including photosynthesis and ATP synthesis
Genome structure
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence?
Cell structure and metabolism
Interesting features of cell structure; how it gains energy; what important molecules it produces.
Ecology
Habitat; symbiosis; contributions to the environment.
Pathology
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
Current Research
Enter summaries of the most recent research here--at least three required
Cool Factor
Describe something you fing "cool" about this microbe.
References
Edited by student of Iris Keren
