Gordonia rubripertincta: Difference between revisions
| (15 intermediate revisions by the same user not shown) | |||
| Line 2: | Line 2: | ||
==Classification== | ==Classification== | ||
Bacteria/Actinobacteria/Actinobacteria; Actinobacteridae; Actinomycetales; Corynebacterineae; Gordoniaceae | Bacteria/Actinobacteria/Actinobacteria; Actinobacteridae; Actinomycetales; Corynebacterineae; Gordoniaceae | ||
==='''''Gordonia rubripertincta'''''=== | ==='''''Gordonia rubripertincta'''''=== | ||
==Description and Significance== | ==Description and Significance== | ||
Gordonia rubripertincta, like most Actinobacteria, is gram positive bacterium (high GC content) that is typically found in soil. It is an aerobic organism and forms branching hyphae resembling mycelia [[#References | [1]]]. G. rubripertincta is nonmotile, and partially acid-alcohol fast – its cell wall is rich in mycolic acid [[#References | [2]]]. It is important because it has the ability to degrade hydrocarbons, specifically polycyclic aromatic hydrocarbons (PAH) which can act as mutagens, and is thus being research as a potential mechanism for the bioremediation of soil [[#References | [3]]]. It can also act as a rare opportunistic pathogen, particularly in patients that are already immunocompromised. G. rubripertincta has the ability to produce mycobactin, a lipid factor that promotes growth [[#References | [4]]]. | ''Gordonia rubripertincta'', like most Actinobacteria, is gram positive bacterium (high GC content) that is typically found in soil. It is an aerobic organism and forms branching hyphae resembling mycelia [[#References | [1]]]. ''G. rubripertincta'' is nonmotile, and partially acid-alcohol fast – its cell wall is rich in mycolic acid [[#References | [2]]]. It is important because it has the ability to degrade hydrocarbons, specifically polycyclic aromatic hydrocarbons (PAH) which can act as mutagens, and is thus being research as a potential mechanism for the bioremediation of soil [[#References | [3]]]. It can also act as a rare opportunistic pathogen, particularly in patients that are already immunocompromised. ''G. rubripertincta'' has the ability to produce mycobactin, a lipid factor that promotes growth [[#References | [4]]]. | ||
==Structure and Metabolism== | ==Structure and Metabolism== | ||
The cell wall composition and chemotaxonomic properties of Gordonia relate it to | The cell wall composition and chemotaxonomic properties of ''Gordonia'' relate it to ''Mycobacterium'', ''Rhodococcus'', and ''Skermania''. | ||
It is nocarioform, meaning it has mycelial growth that fragments into rods and cocci. | It is nocarioform, meaning it has mycelial growth that fragments into rods and cocci. | ||
It does not generate spores. | It does not generate spores. | ||
The colony morphology can vary greatly even within a species, but G. rubripertincta generally appears pink to orange in color. | The colony morphology can vary greatly even within a species, but ''G. rubripertincta'' generally appears pink to orange in color. | ||
It has a cell wall categorized as Chemotype IV because it contains mycolic acids; the major sugar in the cell wall are arabinose and galactose. | It has a cell wall categorized as Chemotype IV because it contains mycolic acids; the major sugar in the cell wall are arabinose and galactose. | ||
The DNA contains between 63-69% GC molecules. | The DNA contains between 63-69% GC molecules. | ||
G. rubripertincta uses an oxidative carbohydrate metabolism. It is one of the few isolated microbes that is capable of transforming s-triazines;it has the ability to produce an s-triazine hydrolase that deaminates melamine and dechlorinates atrazine. G. | ''G. rubripertincta'' uses an oxidative carbohydrate metabolism. It is one of the few isolated microbes that is capable of transforming s-triazines;it has the ability to produce an s-triazine hydrolase that deaminates melamine and dechlorinates atrazine. ''G. rubripertincta'' also produces a number of useful compounds including L-lysine and biosurfactants, which allow for the degradation of hydrophobic compounds [[#References | [5]]]. | ||
==Ecology and Pathogenesis== | ==Ecology and Pathogenesis== | ||
''Gordonia'' species are typically found in soil and aquatic habitats, but a growing number of ''Gordonia'' species are becoming associated with human and animal diseases [[#References | [4]]] . | |||
In all known cases of infection by ''Gordonia'' species, patients were immunosuppressed and infection occurred subsequent to illness. Infection has been found after various surgical procedures, applications of catheters, or the use of heart-lung machines. Reports of infection by ''Gordonia'' species are extremely rare in comparison to other opportunistically pathogenic bacteria [[#References | [5]]]. | |||
==References== | ==References== | ||
[1] | [1] "Actinobacteria." Encyclopedia of Life, available from http://eol.org/pages/7861/overview. Accessed 17July 2013. | ||
[2] Shen, Fo-Ting, et al. "Gordonia soli sp. nov., a novel actinomycete isolated from soil." International journal of systematic and evolutionary microbiology 56.11 (2006): 2597-2601. | |||
[3] Pizzul, Leticia, María del Pilar Castillo, and John Stenström. "Characterization of selected actinomycetes degrading polyaromatic hydrocarbons in liquid culture and spiked soil." World Journal of Microbiology and Biotechnology 22.7 (2006): 745-752. | |||
[4] Shen, Fo-Ting, et al. "Molecular detection and phylogenetic analysis of the catechol 1, 2-dioxygenase gene from< i> Gordonia</i> spp." Systematic and applied microbiology 32.5 (2009): 291-300. | |||
[5] M. Arenskötter, D. Bröker, A. Steinbüchel, Biology of the metabolically diverse genus Gordonia, Appl. Environ. Microbiol. 70 (2004) 3195–3204 | |||
==Author== | ==Author== | ||
Page authored by | Page authored by Margaret Shevik, student of [mailto:helv0010@umn.ed Mandy Brosnahan], Instructor at the University of Minnesota-Twin Cities, MICB 3301/3303: Biology of Microorganisms. | ||
<!--Do not edit or remove this line-->[[Category:Pages edited by students of Mandy Brosnahan at the University of Minnesota-Twin Cities]] | <!--Do not edit or remove this line-->[[Category:Pages edited by students of Mandy Brosnahan at the University of Minnesota-Twin Cities]] | ||
Latest revision as of 04:44, 18 July 2013
Classification
Bacteria/Actinobacteria/Actinobacteria; Actinobacteridae; Actinomycetales; Corynebacterineae; Gordoniaceae
Gordonia rubripertincta
Description and Significance
Gordonia rubripertincta, like most Actinobacteria, is gram positive bacterium (high GC content) that is typically found in soil. It is an aerobic organism and forms branching hyphae resembling mycelia [1]. G. rubripertincta is nonmotile, and partially acid-alcohol fast – its cell wall is rich in mycolic acid [2]. It is important because it has the ability to degrade hydrocarbons, specifically polycyclic aromatic hydrocarbons (PAH) which can act as mutagens, and is thus being research as a potential mechanism for the bioremediation of soil [3]. It can also act as a rare opportunistic pathogen, particularly in patients that are already immunocompromised. G. rubripertincta has the ability to produce mycobactin, a lipid factor that promotes growth [4].
Structure and Metabolism
The cell wall composition and chemotaxonomic properties of Gordonia relate it to Mycobacterium, Rhodococcus, and Skermania. It is nocarioform, meaning it has mycelial growth that fragments into rods and cocci. It does not generate spores. The colony morphology can vary greatly even within a species, but G. rubripertincta generally appears pink to orange in color. It has a cell wall categorized as Chemotype IV because it contains mycolic acids; the major sugar in the cell wall are arabinose and galactose. The DNA contains between 63-69% GC molecules.
G. rubripertincta uses an oxidative carbohydrate metabolism. It is one of the few isolated microbes that is capable of transforming s-triazines;it has the ability to produce an s-triazine hydrolase that deaminates melamine and dechlorinates atrazine. G. rubripertincta also produces a number of useful compounds including L-lysine and biosurfactants, which allow for the degradation of hydrophobic compounds [5].
Ecology and Pathogenesis
Gordonia species are typically found in soil and aquatic habitats, but a growing number of Gordonia species are becoming associated with human and animal diseases [4] . In all known cases of infection by Gordonia species, patients were immunosuppressed and infection occurred subsequent to illness. Infection has been found after various surgical procedures, applications of catheters, or the use of heart-lung machines. Reports of infection by Gordonia species are extremely rare in comparison to other opportunistically pathogenic bacteria [5].
References
[1] "Actinobacteria." Encyclopedia of Life, available from http://eol.org/pages/7861/overview. Accessed 17July 2013.
[2] Shen, Fo-Ting, et al. "Gordonia soli sp. nov., a novel actinomycete isolated from soil." International journal of systematic and evolutionary microbiology 56.11 (2006): 2597-2601.
[3] Pizzul, Leticia, María del Pilar Castillo, and John Stenström. "Characterization of selected actinomycetes degrading polyaromatic hydrocarbons in liquid culture and spiked soil." World Journal of Microbiology and Biotechnology 22.7 (2006): 745-752.
[4] Shen, Fo-Ting, et al. "Molecular detection and phylogenetic analysis of the catechol 1, 2-dioxygenase gene from< i> Gordonia spp." Systematic and applied microbiology 32.5 (2009): 291-300.
[5] M. Arenskötter, D. Bröker, A. Steinbüchel, Biology of the metabolically diverse genus Gordonia, Appl. Environ. Microbiol. 70 (2004) 3195–3204
Author
Page authored by Margaret Shevik, student of Mandy Brosnahan, Instructor at the University of Minnesota-Twin Cities, MICB 3301/3303: Biology of Microorganisms.
