Journal
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
Volume 65, Issue -, Pages 2365-2371Publisher
MICROBIOLOGY SOC
DOI: 10.1099/ijs.0.000264
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Funding
- Federal Ministry of Food and Agriculture [FKZ 2200701]
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Phenotypic and phylogenetic studies were performed on new isolates of a novel Gram-stain-positive, anaerobic, non-sporulating, rod-shaped bacterium isolated from a thermophilic biogas plant. The novel organisms were able to degrade crystalline cellulose. 16S rRNA gene comparative sequence analysis demonstrated that the isolates formed a hitherto unknown subline within the family Lachnospiraceae. As a representative of the whole group of isolates, strain T3/55(T) was further characterized. The closest relative of T3/55(T) among the taxa with validly published names is Mobilitalea sibirica, sharing 93.9 % 16S rRNA gene sequence similarity. Strain T3/55(T) was catalase-negative, indole-negative, and produced acetate, ethanol and propionic acid as major end products from cellulose metabolism. The major cellular fatty acids (>1 %) were 16 :0 dimethyl acetal, 16 :0 fatty acid methyl ester and 16 :0 aldehyde. The DNA G+C content was 36.6 mol%. A novel genus and species, Herbinix hemicellulosilytica gen. nov., sp. nov., is proposed based on phylogenetic analysis and physiological properties of the novel isolate. Strain T3/55(T) (=DSM 29228(T)=CECT 8801(T)), represents the type strain of Herbinix hemicellulosilytica gen. nov., sp. nov.
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