Deferrisoma paleochoriense sp. nov., a thermophilic, iron(III)-reducing bacterium from a shallow-water hydrothermal vent in the Mediterranean Sea

International Journal of Systematic and Evolutionary Microbiology
By: , and 

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Abstract

A novel thermophilic, anaerobic, mixotrophic bacterium, designated strain MAG-PB1, was isolated from a shallow-water hydrothermal vent system in Palaeochori Bay off the coast of the island of Milos, Greece. The cells were Gram-negative, rugose, short rods, approximately 1.0 μm long and 0.5 μm wide. Strain MAG-PB1grew at 30–70 °C (optimum 60 °C), 0–50 g NaCl l (optimum 15–20 g l) and pH 5.5–8.0 (optimum pH 6.0). Generation time under optimal conditions was 2.5 h. Optimal growth occurred under chemolithoautotrophic conditions with H as the energy source and CO as the carbon source. Fe(III), Mn(IV), arsenate and selenate were used as electron acceptors. Peptone, tryptone, Casamino acids, sucrose, yeast extract, -fructose, α--glucose and ( − )--arabinose also served as electron donors. No growth occurred in the presence of lactate or formate. The G+C content of the genomic DNA was 66.7 mol%. Phylogenetic analysis of the 16S rRNA gene sequence indicated that this organism is closely related to , the first species of a recently described genus in the . Based on the 16S rRNA gene phylogenetic analysis and on physiological, biochemical and structural characteristics, the strain was found to represent a novel species, for which the name  sp. nov. is proposed. The type strain is MAG-PB1 ( = JCM 30394 = DSM 29363). 

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Deferrisoma paleochoriense sp. nov., a thermophilic, iron(III)-reducing bacterium from a shallow-water hydrothermal vent in the Mediterranean Sea
Series title International Journal of Systematic and Evolutionary Microbiology
DOI 10.1099/ijsem.0.000798
Volume 66
Year Published 2016
Language English
Publisher SGM
Contributing office(s) Leetown Science Center
Description 7 p.
First page 830
Last page 836
Country Greece
Other Geospatial Mediterranean Sea, Milos Island, Paleochori Bay
Online Only (Y/N) N
Additional Online Files (Y/N) N