INVESTIGADORES
DELGADO osvaldo Daniel
artículos
Título:
Nesterenkonia aethiopicum sp. nov., a new alkaliphilic, halotolerant member of the Nesterenkonia genus isolated from an Ethiopian soda lake.
Autor/es:
DELGADO O D; QUILLAGUAMAN J; BAKHTIAR S; MATTIASSON B; GESSESSE A; HATTI-KAUL R
Revista:
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY.
Editorial:
The society for General Microbiology SGM
Referencias:
Lugar: Londres; Año: 2006 vol. 56 p. 1229 - 1232
ISSN:
1466-5026
Resumen:
Nesterenkonia aethiopica sp. nov., isolated from the shore of Lake Abjata in Ethiopia is a heterotrophic, alkaliphilic, moderately halophilic, Gram-positive, strictly aerobic, non-motile, non-endospore-forming bacterium. The organism grows optimally at 30-37 °C, pH 9 and 3% (w/v) NaCl. Analysis of the cell wall showed the presence of murein of the type L-Lys-Gly-L-Glu, variation A4α. The G+C content (mol %) of the genomic DNA was 69·0 mol %. Sequence analysis of 16S rDNA of strain DSM 17733T, placed the isolate in the genus Nesterenkonia. DNA-DNA hybridisation of DSM 17733T against those organisms with the closest phylogenetic affiliation, N. halobia, N. lacusekhoensis and N. xinjiangensis gave similarity values of 48·5 %, 63·7 % (repetition 57·2 %), and 35·7 (repetition 29·3 %), respectively. Based on both phenotypic and phylogenetic criteria and low DNA-DNA similarities with the phylogenetically closest species Nesterenkonia xinjiangensis and Nesterenkonia halobia, it is proposed that the isolate be classified as a novel species, Nesterenkonia aethiopica. The type strain is DSM 17733T =CCUG 48939T.