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Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
Shouchella tritolerans sp. nov., a facultative anaerobic bacterium isolated from marine sediments
Cheng-Jie Xie1,2, Shang Yang1, Shuang Han1
1Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, People's Republic of China.
Abstract:
An alkali, salt, and thermo-tolerant strain designated FJAT-45399T was isolated from marine sediment in Fujian Province, China. Strain FJAT-45399T was Gram-stain-positive, rod-shaped, and facultatively aerobic. It shared high 16S rRNA gene sequence similarities with the members of the genus Shouchella. Further, the phylogenetic and phylogenomic analysis also suggested strain FJAT-45399T clustered with the members of the genus Shouchella. Growth of strain FJAT-45399T was observed at 15-55 °C (optimum 45-50 °C), pH 7.0-13.0 (optimum 9.0) and 0-15% (w/v) NaCl (optimum 2%). It contained MK-7 as the menaquinone. The polar lipids were diphosphatidylglycerol (DPG), phosphatidylglycerol (PG) and an unidentified glycolipid (UGL) and lipid (UL). The major fatty acids (> 10%) were C16:0 (22.8%), iso-C15:0 (21.3%), and anteiso-C15:0 (14.0%). The genomic DNA G + C content was 44.5%. The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between strain FJAT-45399T and the most closely related type strain Shouchella clausii DSM 8716T (ANI 94.1% and dDDH 55.4%) were both below the cut-off level for species delineation. Based on the above results, strain FJAT-45399T represents a novel species of the genus Shouchella, for which the name Shouchella tritolerans sp. nov., is proposed. The type strain is FJAT-45399T (= GDMCC 1.3098T = JCM 35613T).
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