Denitrobacterium

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Denitrobacterium
Scientific classification
Domain:
Bacteria
Phylum:
Actinomycetota
Class:
Coriobacteriia
Order:
Eggerthellales
Family:
Eggerthellaceae
Genus:
Denitrobacterium

Anderson et al. 2000
Type species
Denitrobacterium detoxificans
Anderson et al. 2000
Species
  • D. detoxificans

Denitrobacterium is a genus of Actinomycetota with a single species, in the family Coriobacteriaceae. Originally isolated from the bovine rumen, Denitrobacterium are non-motile and non-spore forming. [1] The only described species in this genus is Denitrobacterium detoxificans. [2] The specific niche of this bacterium in the bovine rumen is theorized to be the detoxification/metabolism of nitrotoxins and miserotoxin. [3] [4] [5]

Contents

Characteristics of Denitrobacterium detoxificans

The sole species currently described in the genus Denitrobacterium, D. detoxificans, is a Gram-positive, obligate anaerobe. [1] In the study conducted by Anderson et al., [1] all of the four strains (NPOH1, NPOH2, NPOH3, and MAJ1) are shown to possess high G+C content in their DNAs (60, 58, 56, and 60 mol%, respectively) and are closely related to one another (more than 99% sequence identity). Additionally, the closest intergeneric relative is Coriobacterium glomerans with 86% sequence identity, based on the 16S rRNA sequence comparison between the NPOH1 strain and sequences available in GenBank. [1]

Metabolism of nitrocompounds by D. detoxificans

In the bovine rumen, Denitrobacterium detoxificans metabolizes the following substrates through oxidation: [1] [6]

The oxidation of these above compounds are coupled with the reduction of nitrocompounds such as: [1] [6]

There are speculations as to how these nitrocompounds are metabolized. The primary mechanism of 3NPA and 3NPOH metabolism is the reduction to amines, i.e. β-alanine and aminopropanol, respectively. [7] β-alanine is further metabolized by ruminal microorganisms, whereas aminopropanol seems to be a final product. [7] It is also speculated that nitrite may be cleaved off from both 3NPA and 3NPOH as a minor metabolite, which is then further reduced to ammonia. [8] 3NPA gets metabolized by ruminal microbes more rapidly than 3NPOH; [9] [8] [10] therefore, 3NPA is less toxic to ruminants grazing on leguminous plants containing the conjugates of these nitrocompounds than 3NPOH. [10] [7]

Plants containing the nitrocompounds metabolized by D. detoxificans

The above nitrocompounds are abundant in many forages in the forms of glycosides and glucose esters. [11] Miserotoxin is the most common glycoside of 3NPOH as 3-nitro-1-propyl-β-D-glucopyranoside, first isolated from Astragalus oblongifolius. [12] Other glycosides of 3NPOH include β-D-gentiobioside, [13] allolactoside, [14] laminaribioside, [15] and cellobioside [16] from Astragalus miser var. serotinus. [11] Glucose esters of 3NPA are produced by species of the genera Coronilla [17] [18] [19] , Astragalus [20] , Indigofera [20] [21] [22] [23] , and Hiptage [21] . [11] 3NPA is also produced by Astragalus canadensis in the forms of oxotetrahydrofuranyl [24] and isoxazolinone esters. [25] [11]

History of Denitrobacterium

Isolation of strains NPOH1-3 and MAJ1

The D. detoxifican strain NPOH1 was first isolated and cultured in the 1996 study by Anderson et al., [3] investigating the metabolism of nitrotoxins such as 3-nitro-1-propanol and 3-nitro-1-propionate. Strains NPOH2 and NPOH3 were isolated from a roll tube containing an agar medium with energy-depleted rumen fluid (at 40% v/v), sodium carbonate, resazurin, L-cysteine-HCl, lipoic acid, vitamins, minerals, and Amisoy (a partially purified soy protein product by Quest International, at 0.08% w/v), supplemented with 9 mM 3-nitro-1-propanol and inoculated with 2 x 10−4 mL of nonenriched ruminal fluid. [3] The rumen contents containing NPOH1, NPOH2, and NPOH3 were obtained from two different cows (one with NPOH1 and another with NPOH2&3) at the National Animal Disease Center (NADC) in Ames, IA, USA. Strain MAJ1 was isolated from rumen contents of a cow on a milkvetch range harboring Astragalus miser var. serotinus in British Columbia, Canada. [1] [3]

Classification of Denitrobacterium into Class Actinobacteria

In the 2000 article, Anderson et al. proposed the assignment of the novel bacteria into the class Actinobacteria, subclass Coriobacteridae , order Coriobacteriales , family Coriobacteriaceae based on the high mole percent G+C content and 16S rRNA sequence. [1] The genus Denitrobacterium was included in the family Coriobaceteriaceae by Zhi et al. in the 2009 publication [26] on addendum to the class Actinobacteria.

See also

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References

  1. 1 2 3 4 5 6 7 8 Anderson RC, Rasmussen MA, Jensen NS, Allison MJ (2000). "Denitrobacterium detoxificans gen. nov., sp. nov., a ruminal bacterium that respires on nitrocompounds". Int J Syst Evol Microbiol. 50 Pt 2 (2): 633–8. doi: 10.1099/00207713-50-2-633 . PMID   10758869.
  2. ↑ LPSN lpsn.dsmz.de
  3. 1 2 3 4 Anderson, R C; Rasmussen, M A; Allison, M J (October 1996). "Enrichment and isolation of a nitropropanol-metabolizing bacterium from the rumen". Applied and Environmental Microbiology. 62 (10): 3885–3886. Bibcode:1996ApEnM..62.3885A. doi:10.1128/aem.62.10.3885-3886.1996. ISSN   0099-2240. PMC   168200 . PMID   8837447.
  4. ↑ Anderson, Robin C.; Rasmussen, Mark A.; Allison, Milton J.; DiSpirito, Alan A. (1997-07-01). "Characteristics of a nitropropanol-metabolizing bacterium isolated from the rumen". Canadian Journal of Microbiology. 43 (7): 617–624. doi:10.1139/m97-088. ISSN   0008-4166. PMID   9246740.
  5. ↑ Anderson, Robin C.; Rasmussen, Mark A. (1998-05-01). "Use of a novel nitrotoxin-metabolizing bacterium to reduce ruminal methane production". Bioresource Technology. 64 (2): 89–95. doi:10.1016/S0960-8524(97)00184-3. ISSN   0960-8524.
  6. 1 2 Ochoa-García, Pedro Antonio; Anderson, Robin C.; Arévalos-Sánchez, Martha María; Rodríguez-Almeida, Felipe Alonso; Félix-Portillo, Monserrath; Muro-Reyes, Alberto; Božić, Aleksandar K.; Arzola-Álvarez, Claudio; Corral-Luna, Agustín (2021-08-16). "Astragallus mollissimus plant extract: a strategy to reduce ruminal methanogenesis". Tropical Animal Health and Production. 53 (4): 436. doi:10.1007/s11250-021-02882-1. ISSN   1573-7438. PMID   34401959. S2CID   237148677.
  7. 1 2 3 Anderson, R C; Rasmussen, M A; Allison, M J (September 1993). "Metabolism of the plant toxins nitropropionic acid and nitropropanol by ruminal microorganisms". Applied and Environmental Microbiology. 59 (9): 3056–3061. Bibcode:1993ApEnM..59.3056A. doi:10.1128/aem.59.9.3056-3061.1993. ISSN   0099-2240. PMC   182406 . PMID   8215375.
  8. 1 2 Majak, W.; Cheng, K.-J. (1981-07-01). "Identification of rumen bacteria that anaerobically degrade aliphatic nitrotoxins". Canadian Journal of Microbiology. 27 (7): 646–650. doi:10.1139/m81-099. ISSN   0008-4166. PMID   7197575.
  9. ↑ Gustine, D. L.; Moyer, B. G.; Wangsness, P. J.; Shenk, J. S. (1977-06-01). "Ruminal Metabolism of 3-Nitropropanoyl-D-Glucopyranoses from Crownvetch". Journal of Animal Science. 44 (6): 1107–1111. doi:10.2527/jas1977.4461107x. ISSN   0021-8812.
  10. 1 2 MAJAK, W.; CLARK, L. J. (1980-06-01). "Metabolism of Aliphatic Nitro Compounds in Bovine Rumen Fluid". Canadian Journal of Animal Science. 60 (2): 319–325. doi: 10.4141/cjas80-041 . ISSN   0008-3984.
  11. 1 2 3 4 Anderson, Robin C.; Majak, Walter; Rassmussen, Mark A.; Callaway, Todd R.; Beier, Ross C.; Nisbet, David J.; Allison, Milton J. (2005-03-01). "Toxicity and Metabolism of the Conjugates of 3-Nitropropanol and 3-Nitropropionic Acid in Forages Poisonous to Livestock". Journal of Agricultural and Food Chemistry. 53 (6): 2344–2350. doi:10.1021/jf040392j. ISSN   0021-8561. PMID   15769179.
  12. ↑ Stermitz, Frank R.; Norris, Frank A.; Williams, Miles Coburn (July 1969). "Miserotoxin, new naturally occurring nitro compound". Journal of the American Chemical Society. 91 (16): 4599–4600. doi:10.1021/ja01044a078. ISSN   0002-7863.
  13. ↑ Majak, Walter; Benn, Michael H. (1988). "3-Nitro-1-propyl-β-d-gentiobioside from Astragalus miser var. serotinus". Phytochemistry. 27 (4): 1089–1091. Bibcode:1988PChem..27.1089M. doi:10.1016/0031-9422(88)80279-6. ISSN   0031-9422.
  14. ↑ Majak, W.; Benn, M. H.; Huang, Y. Y. (September 1988). "A New Glycoside of 3-Nitropropanol from Astragalus miser var. serotinus". Journal of Natural Products. 51 (5): 985–988. doi:10.1021/np50059a032. ISSN   0163-3864. PMID   21401184.
  15. ↑ Benn, Michael H.; Majak, Walter (January 1989). "3-Nitro-1-propyl-β-d-laminaribioside from Astragalus miser var. serotinus". Phytochemistry. 28 (9): 2369–2371. Bibcode:1989PChem..28.2369B. doi:10.1016/s0031-9422(00)97986-x. ISSN   0031-9422.
  16. ↑ Long, Melissa; Benn, Michael; Majak, Walter; McDiarmid, Ruth (January 1992). "3-nitropropyl glycosides of Astragalus miser var. serotinus". Phytochemistry. 31 (1): 321–323. Bibcode:1992PChem..31..321L. doi:10.1016/0031-9422(91)83063-q. ISSN   0031-9422.
  17. ↑ Majak, W (1976). "Nitropropanylglucopyranoses in Coronilla varia". Phytochemistry. 15 (3): 415–417. Bibcode:1976PChem..15..415M. doi:10.1016/s0031-9422(00)86835-1. ISSN   0031-9422.
  18. ↑ Moyer, Barton G.; Pfeffer, Philip E.; Moniot, Jerry L.; Shamma, Maurice; Gustine, David L. (January 1977). "Corollin, coronillin and coronarian: Three new 3-nitropropanoyl-d-glucopyranoses from Coronilla varia". Phytochemistry. 16 (3): 375–377. Bibcode:1977PChem..16..375M. doi:10.1016/0031-9422(77)80068-x. ISSN   0031-9422.
  19. ↑ Majak, Walter; Benn, Michael (1994). "Additional esters of 3-nitropropanoic acid and glucose from fruit of the New Zealand karaka tree, Corynocarpus laevigatus". Phytochemistry. 35 (4): 901–903. Bibcode:1994PChem..35..901M. doi:10.1016/s0031-9422(00)90635-6. ISSN   0031-9422.
  20. 1 2 Stermitz, F.R.; Lowry, W.T.; Ubben, E.; Sharifi, I. (January 1972). "1,6-Di-3-nitropropanoyl-β-d-glucopyranoside from Astragalus cibarius". Phytochemistry. 11 (12): 3525–3527. Bibcode:1972PChem..11.3525S. doi:10.1016/s0031-9422(00)89851-9. ISSN   0031-9422.
  21. 1 2 Finnegan, R.A.; Stephani, R.A. (February 1968). "Structure of Hiptagin as 1,2,4,6-tetra-O-(3-nitropropanoyl)-β-D-Glucopyranoside, its Identity with Endecaphyllin X, and the Synthesis of its Methyl Ether". Journal of Pharmaceutical Sciences. 57 (2): 353–354. doi:10.1002/jps.2600570233. ISSN   0022-3549. PMID   5641692.
  22. ↑ Benn, Michael; Mcewan, Denise; Pass, Michael A.; Majak, Walter (July 1992). "Three nitropropanoyl esters of glucose from Indigofera linnaei". Phytochemistry. 31 (7): 2393–2395. Bibcode:1992PChem..31.2393B. doi:10.1016/0031-9422(92)83284-6. ISSN   0031-9422.
  23. ↑ Garcez, Walmir S.; Garcez, Fernanda R.; Honda, Neli K.; da Silva, Antonio J.R. (January 1989). "A nitropropanoyl-glucopyranoside from Indigofera suffruticosa". Phytochemistry. 28 (4): 1251–1252. Bibcode:1989PChem..28.1251G. doi:10.1016/0031-9422(89)80220-1. ISSN   0031-9422.
  24. ↑ Benn, M (December 1995). "Aliphatic nitro-compounds in Astragalus canadensis". Phytochemistry. 40 (6): 1629–1631. Bibcode:1995PChem..40.1629B. doi:10.1016/0031-9422(95)00482-m. ISSN   0031-9422.
  25. ↑ Benn, Michael H; Majak, Walter; Aplin, Robin (July 1997). "A nitropropanoyl isoxazolinone derivative in two species of Astragalus". Biochemical Systematics and Ecology. 25 (5): 467–468. doi:10.1016/s0305-1978(97)00022-7. ISSN   0305-1978.
  26. ↑ Zhi, X.-Y.; Li, W.-J.; Stackebrandt, E. (2009-03-01). "An update of the structure and 16S rRNA gene sequence-based definition of higher ranks of the class Actinobacteria, with the proposal of two new suborders and four new families and emended descriptions of the existing higher taxa". International Journal of Systematic and Evolutionary Microbiology. 59 (3): 589–608. doi: 10.1099/ijs.0.65780-0 . ISSN   1466-5026. PMID   19244447.
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