Azotobacter chroococcum: Difference between revisions
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==Genome Structure== | ==Genome Structure== | ||
Only one strain of the bacterial species ''Azotobacter chroococcum'' has been sequenced in its entirety. The genome of ''Azotobacter chroococcum'' NCIMB 8003 (ATCC 4412)(Ac-8003) consists of a singular, circular chromosome and six plasmids pAcX50a, b, c, d, e, f totaling 5,192,291 bp. The chromosome contains 4,591,803 bp while the six plasmids contain 10,435 bp, 13,852 bp, 62,783 bp, 69,713 bp, 132,724 bp, and 311,724 bp respectively. The chromosome has a G+C content of 66.27% while the six plasmids have a G+C content of 58.1%, 55.3%, 56.7%, 59.2%, 61.9%, and 62.6% respectively. The genome also encodes 4628 predicted protein-encoding genes and 258 transposase (Robson et al. 2015). | Only one strain of the bacterial species ''Azotobacter chroococcum'' has been sequenced in its entirety. The genome of ''Azotobacter chroococcum'' NCIMB 8003 (ATCC 4412)(Ac-8003) consists of a singular, circular chromosome and six plasmids pAcX50a, b, c, d, e, f totaling 5,192,291 bp. The chromosome contains 4,591,803 bp while the six plasmids contain 10,435 bp, 13,852 bp, 62,783 bp, 69,713 bp, 132,724 bp, and 311,724 bp respectively. The chromosome has a G+C content of 66.27% while the six plasmids have a G+C content of 58.1%, 55.3%, 56.7%, 59.2%, 61.9%, and 62.6% respectively. The genome also encodes 4628 predicted protein-encoding genes and 258 transposase (Robson et al. 2015). | ||
Revision as of 07:30, 13 December 2022
Classification
Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales; Pseudomonadaceae
Species
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NCBI: [1] |
Azotobacter chroococcum
Description and Significance
Describe the appearance, habitat, etc. of the organism, and why you think it is important.
Azotobacter chroococcum colonies are characterized by a creamy color, circular shape, and smooth convex type. Single bacterium are characterized by a rod shape and are motile by way of a flagella (Talabani et al. 2019).
Genome Structure
Only one strain of the bacterial species Azotobacter chroococcum has been sequenced in its entirety. The genome of Azotobacter chroococcum NCIMB 8003 (ATCC 4412)(Ac-8003) consists of a singular, circular chromosome and six plasmids pAcX50a, b, c, d, e, f totaling 5,192,291 bp. The chromosome contains 4,591,803 bp while the six plasmids contain 10,435 bp, 13,852 bp, 62,783 bp, 69,713 bp, 132,724 bp, and 311,724 bp respectively. The chromosome has a G+C content of 66.27% while the six plasmids have a G+C content of 58.1%, 55.3%, 56.7%, 59.2%, 61.9%, and 62.6% respectively. The genome also encodes 4628 predicted protein-encoding genes and 258 transposase (Robson et al. 2015).
Cell Structure, Metabolism and Life Cycle
Interesting features of cell structure; how it gains energy; what important molecules it produces.
Azotobacter chroococcum is a free-living and obligately-aerobic gram negative bacteria that has the ability for atmospheric nitrogen fixation (Robson et al. 2015, Talabani et al. 2019).
Ecology and Pathogenesis
Habitat; symbiosis; biogeochemical significance; contributions to environment.
If relevant, how does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
References
Robson RL, Jones R, Robson RM, Schwartz A, Richardson TH. 2015. Azotobacter Genomes: The Genome of Azotobacter chroococcum NCIMB 8003 (ATCC 4412). PLOS ONE. [accessed 2022 November 20;10(6):e0127997. doi:10.1371/journal.pone.0127997.]
Talabani SK, Fattah OA, Khider AK. 2019. CLASSICAL AND MOLECULAR APPROACHES FOR IDENTIFICATION OF RHIZOBIUM LEGUMINOSARIUM, AZOTOBACTER CHROOCOCCUM AND BACILLUS MEGATERIUM. APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH. [accessed 2022 November 21;17(5):12491-12506. doi:10.15666/aeer/1705_1249112506.]
Kumar R, Bhatia R, Kukreja K, Behl RK, Dudeja SS, Narula N. 2007. Establishment of Azotobacter on plant roots: chemotactic response, development and analysis of root exudates of cotton (Gossypium hirsutum L.) and wheat (Triticum aestivum L.). Journal of Basic Microbiology. [accessed 2022 November 21;47(5):436-439. doi:10.1002/jobm.200610285.]
Bisset KA, Hale CMF. 1953. The Cytology and Life-cycle of Azotobacter chroococcum. Journal of General Microbiology. [accessed 2022 December 12;8(3):442-448. doi:10.1099/00221287-8-3-442.]
Author
Page authored by Isabella Ickes, student of Prof. Bradley Tolar at UNC Wilmington.
