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Abstract
Bacterial strain THMBR28T was isolated from decomposing algal scum that was collected during an algal bloom in Taihu lake, China. Cells of strain THMBR28T were Gram-staining-positive, facultatively anaerobic and rod-shaped. Growth was observed at 20–45 °C (optimum, 30 °C), at pH 5.0–9.5 (optimum, pH 6.5–7.5), and in the presence of 0–1.0 % (w/v) NaCl (optimum, 0.5 %). Strain THMBR28T contained MK-7 as the major menaquinone and iso-C15 : 0 as the major cellular fatty acid. The polar lipid profile contained phosphatidylglycerol, phosphatidylmonomethylethanolamine, phosphatidylethanolamine and six unidentified polar lipids. The diamino acid found in the cell-wall peptidoglycan was meso-diaminopimelic acid. The DNA G+C content was 57.6 mol% (T m ). Phylogenetic analysis of 16S rRNA gene sequences showed that strain THMBR28T belonged to the genus Tumebacillus, most closely related to Tumebacillus ginsengisoli DSM 18389T (95.0 %) and Tumebacillus permanentifrigoris Eur1 9.5T (93.4 %). Based on phylogenetic and phenotypic characterization, it is concluded that strain THMBR28T represents a novel species of the genus Tumebacillus, for which the name Tumebacillus algifaecis sp. nov. is proposed, with THMBR28T ( = CGMCC 1.10949T = NBRC 108765T) as the type strain.
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