RRC ID 27708
Author Nunoura T, Hirai M, Miyazaki M, Kazama H, Makita H, Hirayama H, Furushima Y, Yamamoto H, Imachi H, Takai K.
Title Isolation and characterization of a thermophilic, obligately anaerobic and heterotrophic marine Chloroflexi bacterium from a Chloroflexi-dominated microbial community associated with a Japanese shallow hydrothermal system, and proposal for Thermomarinilinea lacunofontalis gen. nov., sp. nov.
Journal Microbes Environ
Abstract A novel marine thermophilic and heterotrophic Anaerolineae bacterium in the phylum Chloroflexi, strain SW7(T), was isolated from an in situ colonization system deployed in the main hydrothermal vent of the Taketomi submarine hot spring field located on the southern part of Yaeyama Archipelago, Japan. The microbial community associated with the hydrothermal vent was predominated by thermophilic heterotrophs such as Thermococcaceae and Anaerolineae, and the next dominant population was thermophilic sulfur oxidizers. Both aerobic and anaerobic hydrogenotrophs including methanogens were detected as minor populations. During the culture-dependent viable count analysis in this study, an Anaerolineae strain SW7(T) was isolated from an enrichment culture at a high dilution rate. Strain SW7(T) was an obligately anaerobic heterotroph that grew with fermentation and had non-motile thin rods 3.5-16.5 μm in length and 0.2 μm in width constituting multicellular filaments. Growth was observed between 37-65°C (optimum 60°C), pH 5.5-7.3 (optimum pH 6.0), and 0.5-3.5% (w/v) NaCl concentration (optimum 1.0%). Based on the physiological and phylogenetic features of a new isolate, we propose a new species representing a novel genus Thermomarinilinea: the type strain of Thermomarinilinea lacunofontalis sp. nov., is SW7(T) (=JCM15506(T)=KCTC5908(T)).
Volume 28(2)
Pages 228-35
Published 2013-1-1
DOI 10.1264/jsme2.me12193
PII DN/JST.JSTAGE/jsme2/ME12193
PMID 23666537
PMC PMC4070665
MeSH Anaerobiosis Bacterial Typing Techniques Chloroflexi / classification* Chloroflexi / genetics Chloroflexi / isolation & purification* Chloroflexi / physiology Cluster Analysis DNA, Bacterial / chemistry DNA, Bacterial / genetics DNA, Ribosomal / chemistry DNA, Ribosomal / genetics Heterotrophic Processes Hydrogen-Ion Concentration Hydrothermal Vents / microbiology* Japan Molecular Sequence Data Phylogeny RNA, Ribosomal, 16S / genetics Sequence Analysis, DNA Sodium Chloride / metabolism Temperature
IF 2.575
Times Cited 34
WOS Category BIOTECHNOLOGY & APPLIED MICROBIOLOGY MICROBIOLOGY
Resource
General Microbes JCM 15506