Premium
A chemotaxonomic study of some moderately halophilic Gram‐positive isolates
Author(s) -
Márquez M.C.,
Quesada E.,
Bejar V.,
Ventosa A.
Publication year - 1993
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1993.tb01601.x
Subject(s) - biology , halophile , gram , chemotaxonomy , homology (biology) , strain (injury) , dna , microbiology and biotechnology , bacteria , genetics , botany , taxonomy (biology) , gene , anatomy
A chemotaxonomic study was carried out on some moderately halophilic Gram‐positive motile cocci, previously isolated from the Salar de Atacama (Chile) and grouped in two phenons (A and B) by numerical taxonomic analysis. Strains included in phenon A had a DNA base composition ranging between 42.0 and 44.0 mol%, while that of phenon B ranged from 48.0 to 48.8 mol%. The results of DNA‐DNA hybridization studies on representative strains from phenons A and B, indicated that the strains assigned to phenon A comprise a genomically homogeneous group, with a high degree of homology (80%) to the type strain of Marinococcus albus. Similarly, phenon B constituted a homogeneous group and the representative strain studied showed a DNA‐DNA homology of 70% with the type strain of Marinococcus halophilus. Representative strains studied from each phenon had meso‐diaminopimelic acid in the cell wall and menaquinone systems with seven isoprene units (MK‐7) as a major component. All these results, together with those previously reported, indicate that strains included in phenons A and B constitute additional strains of the species Marinococcus albus and Marinococcus halophilus , respectively.