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Volume 58, Issue 1

gen. nov., sp. nov., an anaerobic protein-utilizing bacterium Free

Abstract

A novel anaerobic, mesophilic, protein-utilizing bacterial strain, GW, was isolated from the mesophilic hydrogen-producing granular sludge used to treat food industry wastewater. The strain was a Gram-positive, non-spore-forming and non-motile rod. Growth of the strain was observed at 20–48 °C and at pH 6.4–10.0. The strain used yeast extract and peptone as carbon and energy sources. Weak growth was also observed with tryptone and Casamino acids as carbon and energy sources. The strain used none of the tested carbohydrates, alcohols or fatty acids. The fermentation products in peptone-yeast broth included ethanol, acetic acid, hydrogen and carbon dioxide. Gelatin was not hydrolysed. Nitrate was reduced. Indole was produced. NH and HS were not produced. The DNA GC content of strain GW was 38.0 mol%. The predominant cellular fatty acids were the saturated fatty acids C (15.58 %), C (25.40 %) and C (12.03 %). Phylogenetic analysis based on 16S rRNA gene sequence similarity revealed that strain GW represented a new branch within cluster XII of the subphylum, with <89.6 % 16S rRNA gene sequence similarities to all described species. On the basis of polyphasic evidence from this study, strain GW represents a new genus and novel species, for which the name gen. nov., sp. nov. is proposed. The type strain is GW (=CGMCC 1.5055=JCM 14574).

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2008-01-01
2024-04-19
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Proteiniborus ethanoligenes gen. nov., sp. nov., an anaerobic protein-utilizing bacterium
Int J Syst Evol Microbiol 58, 12 (2008); https://doi.org/10.1099/ijs.0.65108-0
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vol. , part 1, pp. 12-16

An electron micrograph of an ultrathin section of strain GW . [PDF](103 KB)



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