| Actinobacteria |
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| Scanning electron micrograph of Actinomyces israelii. |
| Scientific classification |
| Domain: |
Bacteria |
| Phylum: |
Actinobacteria |
| Class: |
Actinobacteria
Stackebrandt et al. 1997 |
| Subclasses & Orders |
- ?Candidatus Planktophila Jezbera et al. 2009
- ?Cathayosporangium ♠ Runmao et al. 1995
- ?Tonsillophilus suis ♠ Azuma and Bak 1980
- Acidimicrobidae Stackebrandt et al. 1997 emend. Zhi et al. 2009
- Acidimicrobiales Stackebrandt et al. 1997 emend. Zhi et al. 2009
- Coriobacteridae Stackebrandt et al. 1997 emend. Zhi et al. 2009
- Coriobacteriales Stackebrandt et al. 1997 emend. Zhi et al. 2009
- Nitriliruptoridae Kurahashi et al. 2010
- Nitriliruptorales Sorokin et al. 2009
- Euzebyales Kurahashi et al. 2010
- Rubrobacteridae Rainey et al. 1997 emend. Zhi et al. 2009
- Gaiellales Albuquerque et al. 2012
- Rubrobacterales Rainey et al. 1997 emend. Zhi et al. 2009
- Solirubrobacterales Reddy and Garcia-Pichel 2009
- Thermoleophilales Reddy and Garcia-Pichel 2009
- Actinobacteridae Stackebrandt et al. 1997 emend. Zhi et al. 2009
- Bifidobacteriales Stackebrandt et al. 1997 emend. Zhi et al. 2009
- Actinomycetales Buchanan 1917 emend. Zhi et al. 2009
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Actinobacteria is a phylum of Gram-positive bacteria with high guanine and cytosine content in their DNA.[1] The G+C content of Actinobacteria can be as high as 70%, though some may have a low G+C content.[2] They can be terrestrial or aquatic.[3] Although understood primarily as soil bacteria, they might be more abundant in freshwaters.[4] Actinobacteria is one of the dominant bacterial phyla and contains one of the largest of bacterial genera, Streptomyces.[5] Analysis of glutamine synthetase sequence has been suggested for phylogenetic analysis of Actinobacteria.[6]
Although some of the largest and most complex bacterial cells belong to the Actinobacteria, the group of marine Actinomarinales has been described as possessing the smallest free-living prokaryotic cells.[7]
Contents
- 1 General
- 2 Phylogeny
- 3 See also
- 4 References
- 5 Further reading
- 6 External links
General
Most Actinobacteria of medical or economic significance are in subclass Actinobacteridae, and belong to the order: Actinomycetales. While many of these cause disease in humans, Streptomyces is notable as a source of antibiotics.
Of those Actinobacteria not in Actinomycetales, Gardnerella is one of the most researched. Classification of Gardnerella is controversial, and MeSH catalogues it as both a gram-positive and gram-negative organism.[8]
Actinobacteria, especially Streptomyces sp., are recognized as the producers of many bioactive metabolites that are useful to humans in medicine, such as antibacterials,[9] antifungals,[10] antivirals, antithrombotics, immunomodifiers, anti-tumor drugs and enzyme inhibitors; and in agriculture, including insecticides, herbicides, fungicides and growth promoting substances for plants and animals.[11][12] Actinobacteria-derived antibiotics that are important in medicine include aminoglycosides, anthracyclines, chloramphenicol, macrolide, tetracyclines etc.
Streptomyces and other actinobacteria are major contributors to biological buffering of soils and have roles in organic matter decomposition conductive to crop production.[13]
Phylogeny
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [14] and National Center for Biotechnology Information (NCBI)[15] and the phylogeny is based on 16S rRNA-based LTP release 106 by The All-Species Living Tree Project [16]
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?Candidatus Planktophila limnetica Jezbera et al. 2009
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?Cathayosporangium alboflavum ♠ Runmao et al. 1995
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?Tonsillophilus suis ♠ Azuma and Bak 1980
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Rubrobacter Suzuki et al. 1989
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| Thermoleophilidae |
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Gaiella occulta Albuquerque et al. 2012
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Thermoleophilum Zarilla and Perry 1986
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Solirubrobacterales
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Coriobacteriaceae
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Acidimicrobiales
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| Nitriliruptoridae |
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Euzebya tangerina Kurahashi et al. 2010
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Nitriliruptor alkaliphilus Sorokin et al. 2009
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| Actinomycetales |
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?Boyliae praeputiale ♠ Yates et al. 2002
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?Frankia alni ♪ (Woronin 1866) Von Tubeuf 1895
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?Motilibacter peucedani Lee 2012
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Acidothermus cellulolyticus Mohagheghi et al. 1986
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Jiangellaceae
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Micromonosporaceae
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Propionibacterineae
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Actinocatenispora Thawai et al. 2006 emend. Seo and Lee 2009
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Glycomycetaceae
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Streptosporangineae
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Pseudonocardiaceae [incl. Actinopolyspora]
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Corynebacterineae
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Catenulisporineae
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Streptomyces Waksman and Henrici 1943 emend. Witt and Stackebrandt 1991 [incl. Kitasatospora & Streptacidiphilus]
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Sporichthya Lechevalier et al. 1968
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Cryptosporangiaceae
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Geodermatophilaceae
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Nakamurellaceae
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Kineosporiaceae
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Kineococcus Yokota et al. 1993
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Angustibacter luteus Tamura et al. 2010
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Micrococcineae [incl. Actinomycetaceae & Bifidobacteriaceae]
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Notes:
♪ Prokaryotes where no pure (axenic) cultures are isolated or available, i. e. not cultivated or can not be sustained in culture for more than a few serial passages
♠ Strains found at the National Center for Biotechnology Information (NCBI) but not listed in the List of Prokaryotic names with Standing in Nomenclature (LSPN)
See also
- List of bacterial vaginosis microbiota
References
- ^ Ventura, M.; Canchaya, C.; Tauch, A.; Chandra, G.; Fitzgerald, G. F.; Chater, K. F.; van Sinderen, D. (5 September 2007). "Genomics of Actinobacteria: Tracing the Evolutionary History of an Ancient Phylum". Microbiology and Molecular Biology Reviews 71 (3): 495–548. doi:10.1128/MMBR.00005-07. PMC 2168647. PMID 17804669.
- ^ Ghai R, McMahon KD, Rodriguez-Valera F (2012). "Breaking a paradigm:cosmopolitan and abundant freshwater actinobacteria are low GC". Environmental Microbiology Reports 4 (1): 29–35. doi:10.1111/j.1758-2229.2011.00274.x. PMID 23757226.
- ^ Servin JA, Herbold CW, Skophammer RG, Lake JA (January 2008). "Evidence excluding the root of the tree of life from the actinobacteria". Mol. Biol. Evol. 25 (1): 1–4. doi:10.1093/molbev/msm249. PMID 18003601.
- ^ Ghai R, Rodriguez-Valera F, McMahon KD; et al. (2011). Lopez-Garcia, Purification, ed. "Metagenomics of the water column in the pristine upper course of the Amazon river". PloS ONE 6 (8): e23785. doi:10.1371/journal.pone.0023785. PMC 3158796. PMID 21915244.
- ^ C.Michael Hogan. 2010. Bacteria. Encyclopedia of Earth. eds. Sidney Draggan and C.J.Cleveland, National Council for Science and the Environment, Washington DC
- ^ Hayward D, van Helden PD, Wiid IJ (2009). "Glutamine synthetase sequence evolution in the mycobacteria and their use as molecular markers for Actinobacteria speciation". BMC Evol. Biol. 9: 48. doi:10.1186/1471-2148-9-48. PMC 2667176. PMID 19245690.
- ^ Ghai R, Mizuno CM, Picazo A, Camacho A, Rodriguez-Valera F (2013). "Metagenomics uncovers a new group of low GC and ultra-small marine Actinobacteria". Scientific Reports 3: 2471. doi:10.1038/srep02471. PMC 3747508. PMID 23959135.
- ^ Gardnerella at the US National Library of Medicine Medical Subject Headings (MeSH)
- ^ Mahajan, GB (2012). "Antibacterial agents from actinomycetes - a review". Frontiers in Bioscience 4: 240–53. doi:10.2741/e373.
- ^ Gupte, M.; Kulkarni, P.; Ganguli, B.N. (2002). "Antifungal Antibiotics". Appl. Microbiol. Biotechnol 58: 46–57.
- ^ Bressan, W (2003). "Biological control of maize seed pathogenic fungi by use of actinomycetes". Biocontrol 48 (2): 233–240. doi:10.1023/a:1022673226324.
- ^ Atta, M.A (2009). Austral. J. Basic and Appl. Sci. 3: 126–135.
- ^ Ningthoujam, Debananda S.; Tamreihao, SuchitraSanasam K.; Nimaichand, Salam (2009). "Test". Afr. J. Microbiol. Res. 3 (11): 737–742.
- ^ J.P. Euzéby. "Actinobacteria". List of Prokaryotic names with Standing in Nomenclature (LPSN) [1]. Retrieved 2011-11-17.
- ^ Sayers; et al. "Actinobacteria". National Center for Biotechnology Information (NCBI) taxonomy database [2]. Retrieved 2011-06-05.
- ^ All-Species Living Tree Project."16S rRNA-based LTP release 106: full tree. accessdate=2011-11-17" (PDF).
Further reading
- Pandey, B.; Ghimire, P.; Agrawal, V.P. (January 12–15, 2004). Studies on the antibacterial activity of the Actinomycetes isolated from the Khumbu Region of Nepal (PDF). International Conference on the Great Himalayas: Climate, Health, Ecology, Management and Conservation. Kathmandu.
- Baltz, R.H. (2005). "Antibiotic discovery from actinomycetes: Will a renaissance follow the decline and fall?". SIM News 55: 186–196.
- Baltz, R.H. (2007). "Antimicrobials from Actinomycetes: Back to the Future". Microbe 2 (3): 125–131.
External links
- Actinomycetes genome database
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Wikispecies has information related to: Actinobacteria |
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Gram-positive bacterial infection: Actinobacteria (primarily A00–A79, 001–041, 080–109)
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| Actinomycineae |
| Actinomycetaceae |
- Actinomyces israelii
- Actinomycosis
- Cutaneous actinomycosis
- Tropheryma whipplei
- Arcanobacterium haemolyticum
- Arcanobacterium haemolyticum infection
- Actinomyces gerencseriae
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| Propionibacteriaceae |
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| Corynebacterineae |
| Mycobacteriaceae |
M. tuberculosis/
M. bovis |
- Tuberculosis: Ghon focus/Ghon's complex
- Pott disease
- brain
- Tuberculous lymphadenitis
- Tuberculous cervical lymphadenitis
- cutaneous
- Scrofuloderma
- Erythema induratum
- Lupus vulgaris
- Prosector's wart
- Tuberculosis cutis orificialis
- Tuberculous cellulitis
- Tuberculous gumma
- Lichen scrofulosorum
- Tuberculid
- Papulonecrotic tuberculid
- Primary inoculation tuberculosis
- Miliary
- Tuberculous pericarditis
- Urogenital tuberculosis
- Multi-drug-resistant tuberculosis
- Extensively drug-resistant tuberculosis
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| M. leprae |
- Leprosy: Tuberculoid leprosy
- Borderline tuberculoid leprosy
- Borderline leprosy
- Borderline lepromatous leprosy
- Lepromatous leprosy
- Histoid leprosy
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| Nontuberculous |
| R1: |
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| R2: |
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| R3: |
- M. avium complex/Mycobacterium avium/Mycobacterium intracellulare/MAP
- M. ulcerans
- M. haemophilum
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| R4/RG: |
- M. fortuitum
- M. chelonae
- M. abscessus
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| Nocardiaceae |
- Nocardia asteroides/Nocardia brasiliensis
- Rhodococcus equi
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| Corynebacteriaceae |
- Corynebacterium diphtheriae
- Corynebacterium minutissimum
- Corynebacterium jeikeium
- Group JK corynebacterium sepsis
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| Bifidobacteriaceae |
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Index of bacterial disease
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| Description |
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| Disease |
- Gram-positive firmicutes
- Gram-positive actinobacteria
- Gram-negative proteobacteria
- Gram-negative non-proteobacteria
- Cholera
- Tuberculosis
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| Treatment |
- Antibiotics
- cell wall
- nucleic acid
- mycobacteria
- protein synthesis
- other
- Antibodies
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