Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/52065
Título: High inter-species and low intra-species variation in 16S-23S rDNA spacer sequences of pathogenic avian mycoplasmas offers potential use as a diagnostic tool
Autores/as: Ramirez, A. S. 
Naylor, C. J.
Pitcher, D. G.
Bradbury, J. M.
Palabras clave: Ribosomal-Rna Spacer
Polymerase-Chain-Reaction
Et-Al. 1989
Region
16S, et al.
Fecha de publicación: 2008
Editor/a: 0378-1135
Publicación seriada: Veterinary Microbiology 
Resumen: In order to investigate its value for phylogenetic analysis, species characterisation and diagnosis, the 16S-23S rDNA intergenic spacer regions (ISRs) of the type strain of 23 avian Mycoplasma species were amplified and the sequences determined. Also sequenced were the reference strains of Mycoplasma iowae serotypes J, K, N, Q and R and a number of field strains of Mycoplasma synoviae, Mycoplasma gallisepticum, Mycoplasma meleagridis and M. iowae. The ISRs demonstrated a high level of size variation (178-2488 bp) between species and did not include RNA genes. Phylogenetic analysis performed using the information conflicted with that based on the 16S rDNA and was therefore not helpful for phylogenetic studies. However, the ISR did appear to be of value for determining species since there was high inter-species variation between all 23 avian Mycoplasma species, and in addition there was low intra-species variation, at least in the four pathogenic species. It could also be very useful as additional information in the description of a new species and as a target for species-specific PCRs. (C) 2007 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/10553/52065
ISSN: 0378-1135
DOI: 10.1016/j.vetmic.2007.10.023
Fuente: Veterinary Microbiology[ISSN 0378-1135],v. 128 (3-4), p. 279-287
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