Fibrobacteres

Dominio:	Bacteria
Filo:	Fibrobacteres

Especies descritas

Os Fibrobacteres son un pequeno filo de bacterias no que se inclúen moitas das bacterias máis importantes do rume do aparato dixestivo de moitos herbívoros, que interveñen na degradación da celulosa das plantas das que se alimentan os animais ruminantes. Membros deste filo estaban situados noutros filos. O único xénero de Fibrobacteres é Fibrobacter, que foi separado do xénero Bacteroides en 1988, no que estivo clasificado.^[1]

Taxonomía[editar | editar a fonte]

Clase Fibrobacteres^[2]
- Orde Fibrobacterales
  - Familia Fibrobacteraceae
    - Xénero Fibrobacter Montgomery et al. 1988
      - F. intestinalis Montgomery et al. 1988
      - F. succinogenes (Hungate 1950) Montgomery et al. 1988
        F. s. elongatus Montgomery et al. 1988
        
        F. s. succinogenes (Hungate 1950) Montgomery et al. 1988

Distribución[editar | editar a fonte]

O filo Fibrobacteres considérase que está moi relacionado co grupo CFB [Cytophaga-Flavibacterium-Bacteroides].^[3] O único xénero do filo, Fibrobacter, contén estirpes obtidas no tracto gastrointestinal de moitos mamíferos, como vacas e porcos.^[4] Describíronse neste xénero dúas especies, que son: Fibrobacter succinogenes e Fibrobacter intestinalis, que recibiron moita atención nos últimos anos debido ao interese que hai en estudar os microbios que poden degradar a fibra vexetal.

Probas moleculares baseadas na amplificación dos xenes do ARNr 16S de mostras tomadas de varios ambientes suxiren que o filo está moito máis amplamente distribuído do que se pensaba anteriormente.^[5]^[6] A maioría dos clons procedentes de ambientes mamíferos agrúpanse xunto cos clons illados xa coñecidos no chamado subfilo 1 de Fibrobacteres.^[6] Ademais, membros de Fibrobacteres do subfilo 2 foron atopados no aparato dixestivo das térmites.^[6] Debido á falta de representantes cultivados do subfilo 2, aínda non está claro a función que exercen no aparato dixestivo das térmites.

Notas[editar | editar a fonte]

↑ Montgomery L; Flesher B; Stahl D. (1988). "Transfer of Bacteroides succinogenes (Hungate) to Fibrobacter gen. nov. as Fibrobacter succinogenes comb. nov. and description of Fibrobacter intestinalis sp. nov". Int. J. Syst. Bacteriol. 38 (4): 430–435. doi:10.1099/00207713-38-4-430.
↑ J.P. Euzéby. "Fibrobacteres". List of Prokaryotic names with Standing in Nomenclature. Arquivado dende o orixinal o 27 de xaneiro de 2013. Consultado o 2011-06-05.
↑ Gupta, R.S. (2004). "The phylogeny and signature sequences characteristics of Fibrobacteres, Chlorobi, and Bacteroidetes". Critical reviews in microbiology 30 (2): 123–143. PMID 15239383. doi:10.1080/10408410490435133.
↑ Qi, M. and Nelson, K.E. and Daugherty, S.C. and Nelson, W.C. and Hance, I.R. and Morrison, M. and Forsberg, C.W. (2005). "Novel molecular features of the fibrolytic intestinal bacterium Fibrobacter intestinalis not shared with Fibrobacter succinogenes as determined by suppressive subtractive hybridization". Journal of bacteriology 187 (11): 3739.
↑ McDonald, J.E. and Lockhart, R.J. and Cox, M.J. and Allison, H.E. and McCarthy, A.J. (2008). "Detection of novel Fibrobacter populations in landfill sites and determination of their relative abundance via quantitative PCR". Environmental microbiology (Wiley Online Library) 10 (5): 1310–1319.
↑ ^6,0 ^6,1 ^6,2 Hongoh, Y. and Deevong, P. and Hattori, S. and Inoue, T. and Noda, S. and Noparatnaraporn, N. and Kudo, T. and Ohkuma, M. (2006). "Phylogenetic diversity, localization, and cell morphologies of members of the candidate phylum TG3 and a subphylum in the phylum Fibrobacteres, recently discovered bacterial groups dominant in termite guts". Applied and environmental microbiology (Am Soc Microbiol) 72 (10): 6780–6788.

Holt JG (editor) (1994). Bergey's Manual of Determinative Bacteriology (9th ed.). Williams & Wilkins. ISBN 0-683-00603-7.

Véxase tamén[editar | editar a fonte]

Ligazóns externas[editar | editar a fonte]

List of Prokaryotic Names with Standing in Nomenclature - Genus Fibrobacter
Systema Naturae 2000 Classification: Phylum Fibrobacteres Arquivado 14 de marzo de 2006 en Wayback Machine.

[1] Montgomery L; Flesher B; Stahl D. (1988). "Transfer of Bacteroides succinogenes (Hungate) to Fibrobacter gen. nov. as Fibrobacter succinogenes comb. nov. and description of Fibrobacter intestinalis sp. nov". Int. J. Syst. Bacteriol. 38 (4): 430–435. doi:10.1099/00207713-38-4-430.

[2] J.P. Euzéby. "Fibrobacteres". List of Prokaryotic names with Standing in Nomenclature. Arquivado dende o orixinal o 27 de xaneiro de 2013. Consultado o 2011-06-05.

[3] Gupta, R.S. (2004). "The phylogeny and signature sequences characteristics of Fibrobacteres, Chlorobi, and Bacteroidetes". Critical reviews in microbiology 30 (2): 123–143. PMID 15239383. doi:10.1080/10408410490435133.

[4] Qi, M. and Nelson, K.E. and Daugherty, S.C. and Nelson, W.C. and Hance, I.R. and Morrison, M. and Forsberg, C.W. (2005). "Novel molecular features of the fibrolytic intestinal bacterium Fibrobacter intestinalis not shared with Fibrobacter succinogenes as determined by suppressive subtractive hybridization". Journal of bacteriology 187 (11): 3739.

[5] McDonald, J.E. and Lockhart, R.J. and Cox, M.J. and Allison, H.E. and McCarthy, A.J. (2008). "Detection of novel Fibrobacter populations in landfill sites and determination of their relative abundance via quantitative PCR". Environmental microbiology (Wiley Online Library) 10 (5): 1310–1319.

[Hongoh2006-6] 6,0 ^6,1 ^6,2 Hongoh, Y. and Deevong, P. and Hattori, S. and Inoue, T. and Noda, S. and Noparatnaraporn, N. and Kudo, T. and Ohkuma, M. (2006). "Phylogenetic diversity, localization, and cell morphologies of members of the candidate phylum TG3 and a subphylum in the phylum Fibrobacteres, recently discovered bacterial groups dominant in termite guts". Applied and environmental microbiology (Am Soc Microbiol) 72 (10): 6780–6788.

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