Pseudomonas oryzihabitans: Difference between revisions
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Pseudomonas oryzihabitans is a rod-shaped, Gram-negative bacteria that forms yellow-color colonies with a rough or wrinkled appearance (9). Since P. oryzihabitans is a Gram-negative bacteria, this means that it has a thin peptidoglycan cell wall with porins that allow substance passage and lipopolysaccharides that may cause toxicity to an infected host. The yellow pigmentation is not dissolvable in water (11). In addition, P. oryzihabitans is non-endospore forming (11). P. oryzihabitans bacterium is motile via one or more polar flagella (11). | |||
=5. Metabolic processes= | =5. Metabolic processes= | ||
Describe important sources of energy, electrons, and carbon (i.e. trophy) for the organism/organisms you are focusing on, as well as important molecules it/they synthesize(s). | Describe important sources of energy, electrons, and carbon (i.e. trophy) for the organism/organisms you are focusing on, as well as important molecules it/they synthesize(s). | ||
Revision as of 14:28, 6 December 2021
1. Classification
a. Higher order taxa
Domain: Bacteria Phylum: Proteobacteria Class: Gammaproteobacteria Order: Pseudomonadales Family: Pseudomonadaceae Genus: Pseudomonas Species: Pseudomonas oryzihabitans
2. Introduction
Pseudomonas oryzihabitans is a rod-shaped, Gram-negative bacterium known to cause infections in humans, in both immunocompromised and non-immunocompromised individuals. Some infections that P. oryzihabitans can cause include nosocomial (hospital-acquired) sepsis, bacteremia, endophthalmitis, and peritonitis (1). In other unique cases, P. oryzihabitans has been documented to cause urinary tract infections and green nail syndrome (2, 3). P. oryzihabitans is commonly found in hospital settings, on respiratory equipment and unsterilized medical tools (1). In nature, P. oryzihabitans can be found in moist environments, like soil, rice paddies, running or standing water, and groundwater (4,5). In these environments, P. oryzihabitans has potential to promote root growth via suppressing parasitic nematode populations, making it easier to grow and maintain certain crops (6). Additionally, P. oryzihabitans has a positive growth effect on members of the cucurbit family affected by Bacterial Fruit Blotch disease (BFB) (7). P. oryzihabitans also negatively impacts the growth of Muskmelon by causing stem and leaf rot (8). Overall, in this paper we discuss how P. oryzihabitans is a multifaceted organism that plays various roles ecologically, agriculturally, and medically that has not been compiled previously.
3. Genome structure
The genome of two strains of Pseudomonas oryzihabitans, AXSa06 and AXSa07, have been sequenced (9). The genome of the P. oryzihabitans strain AXSa06 has 5,109,344 base pairs in total and the AXSa07 strain has 4,666,115 base pairs. The two strains share a similar % G+C content, both around 66% of the whole genome (9). In the AXSa07 strain genome, there are 4495 protein coding sequences. However, the AXSa07 strain has 15 rRNA genes, higher than the AXSa06 strain, which has 5 rRNA genes (9). A key difference between the AXSa06 strain and the AXSa07 strain lies in their ACC deaminase activity. ACC deaminase activity is often used by soil microorganisms to enhance plant growth by inhibiting the enzyme 1-aminocyclopropane-1-carboxylic acid (ACC), which is a precursor to ethylene, a hormone that controls plant maturation. The P. oryzihabitans strain AXSa06 has genes coding for ACC deaminase activity, while AXSa07 strain does not (9). In the P. oryzihabitans strain AXSa06 genome, there are 4929 protein coding sequences (9). Besides AXSa06 and AXSa07 strains, the genome of GCMCC 6169, a soil strain of P. oryzihabitans, was shown to encode the protein POEP1 which aids cellulose breakdown. Although POEP1 does not break down cellulose directly, it synergistically enhances the activity of cellulase, a protein that directly hydrolyzes cellulose for energy (10).
4. Cell structure
Pseudomonas oryzihabitans is a rod-shaped, Gram-negative bacteria that forms yellow-color colonies with a rough or wrinkled appearance (9). Since P. oryzihabitans is a Gram-negative bacteria, this means that it has a thin peptidoglycan cell wall with porins that allow substance passage and lipopolysaccharides that may cause toxicity to an infected host. The yellow pigmentation is not dissolvable in water (11). In addition, P. oryzihabitans is non-endospore forming (11). P. oryzihabitans bacterium is motile via one or more polar flagella (11).
5. Metabolic processes
Describe important sources of energy, electrons, and carbon (i.e. trophy) for the organism/organisms you are focusing on, as well as important molecules it/they synthesize(s).
6. Ecology
Habitat; symbiosis; contributions to the environment.
7. Pathology
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
8. Current Research
Include information about how this microbe (or related microbes) are currently being studied and for what purpose
9. References
It is required that you add at least five primary research articles (in same format as the sample reference below) that corresponds to the info that you added to this page. [Sample reference] Faller, A., and Schleifer, K. "Modified Oxidase and Benzidine Tests for Separation of Staphylococci from Micrococci". Journal of Clinical Microbiology. 1981. Volume 13. p. 1031-1035.
