1887

Abstract

A novel aerobic bacterium, designated as strain GM2012, was isolated from a microbial mat proliferating under the flow of thermal water dissipating from the wall of a 4000 m deep mine in South Africa. The cells were non-motile cocci, capable of budding, occurred in single or gathered in aggregates. The organism is a strictly aerobic chemoorganoheterotroph, preferring simple sugars and polysaccharides as growth substrates. The optimal growth occurred at 42 °C and pH 7.5–7.7. The predominant fatty acids were palmitate, stearate and oleate. The G+C content of the DNA was 70.1 mol%. The 16S rRNA gene sequence analysis placed strain GM2012 within the family of the order with 88–89 % sequence identity to , , , and type strains. Based on the genotypic and phenotypic distinctive features of the new strain, we propose a novel genus and species gen. nov., sp. nov. with the type strain GM2012 (=VKM B-2860,=KCTC 72013).

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2019-08-01
2019-08-19
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