Gluconacetobacter medellinensis sp. nov., cellulose- and non-cellulose-producing acetic acid bacteria isolated from vinegar
- 1 March 2013
- journal article
- Published by Microbiology Society in International Journal of Systematic and Evolutionary Microbiology
- Vol. 63 (Pt_3), 1119-1125
- https://doi.org/10.1099/ijs.0.043414-0
Abstract
The phylogenetic position of a cellulose-producing acetic acid bacterium, strain ID13488, isolated from commercially available Colombian homemade fruit vinegar, was investigated. Analyses using nearly complete 16S rRNA gene sequences, nearly complete 16S–23S rRNA gene internal transcribed spacer (ITS) sequences, as well as concatenated partial sequences of the housekeeping genes dnaK, groEL and rpoB, allocated the micro-organism to the genus Gluconacetobacter , and more precisely to the Gluconacetobacter xylinus group. Moreover, the data suggested that the micro-organism belongs to a novel species in this genus, together with LMG 1693T, a non-cellulose-producing strain isolated from vinegar by Kondo and previously classified as a strain of Gluconacetobacter xylinus . DNA–DNA hybridizations confirmed this finding, revealing a DNA–DNA relatedness value of 81 % between strains ID13488 and LMG 1693T, and values T and the type strains of the closest phylogenetic neighbours. Additionally, the classification of strains ID13488 and LMG 1693T into a single novel species was supported by amplified fragment length polymorphism (AFLP) and (GTG)5-PCR DNA fingerprinting data, as well as by phenotypic data. Strains ID13488 and LMG 1693T could be differentiated from closely related species of the genus Gluconacetobacter by their ability to produce 2- and 5-keto-d-gluconic acid from d-glucose, their ability to produce acid from sucrose, but not from 1-propanol, and their ability to grow on 3 % ethanol in the absence of acetic acid and on ethanol, d-ribose, d-xylose, sucrose, sorbitol, d-mannitol and d-gluconate as carbon sources. The DNA G+C content of strains ID13488 and LMG 1693T was 58.0 and 60.7 mol%, respectively. The major ubiquinone of LMG 1693T was Q-10. Taken together these data indicate that strains ID13488 and LMG 1693T represent a novel species of the genus Gluconacetobacter for which the name Gluconacetobacter medellinensis sp. nov. is proposed. The type strain is LMG 1693T ( = NBRC 3288T = Kondo 51T).Funding Information
- The Slovenian Research Agency of Science
- Federal Public Planning Service – Science Policy
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