AI Article Synopsis

  • A new bacterium, strain L182, was isolated from coastal sediment in Beihai, China, and is characterized as Gram-negative, aerobic, and rod-shaped, with yellow colonies that grow optimally at 25°C.
  • Strain L182 shows specific growth characteristics, thriving in a temperature range of 4-40°C, pH 5.5-10.0, and with varying salt concentrations, while the genome has a G+C content of 36.0%.
  • The strain is closely related to Aestuariibaculum suncheonense SC17, with a 98.2% similarity in 16S rRNA gene sequence, leading to its classification as a new species, A

Article Abstract

A Gram-stain negative, strictly aerobic, and rod-shaped bacterium, designated as strain L182, was isolated from coastal sediment in Beihai, Guangxi Province, PR China. Colonies of strain L182 were yellow, 2 mm in diameter, round, opaque, smooth and convex after incubation on marine ager at 30 °C for 3 days. Cells were catalase-positive but oxidase-negative. Growth of strain L182 was observed at 4-40 °C (optimum, 25 °C), pH 5.5-10.0 (optimum, pH 5.5-8.0) and with 0-6% (w/v) NaCl (optimum, 0.5-4.0%). The G + C content based on the genome sequence was 36.0%. The only respiratory quinone was MK-6. The main polar lipids included phosphatidylethanolamine, phosphatidylglycerol, one unidentified aminophospholipid, one unidentified glycolipids, four unidentified aminolipids and six unidentified lipids. The major fatty acids (> 10%) were iso-C, iso-C G and iso-C 3-OH. The 16S rRNA gene sequence similarity between strain L182 and Aestuariibaculum suncheonense SC17 was 98.2%, and the similarities with other type strains of the genus Aestuariibaculum were 96.1-97.2%. The average nucleotide identity and in silicon DNA-DNA hybridization values between the strain L182 and its closely related Aestuariibaculum species were 80.8-85.2% and 22.0-29.5%. According to the above results, Aestuariibaculum lutulentum sp. nov. was proposed as a novel species. The type strain is L182 (= MCCC 1K08065 = KCTC 92530).

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http://dx.doi.org/10.1007/s00203-023-03535-7DOI Listing

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Article Synopsis
  • A new bacterium, strain L182, was isolated from coastal sediment in Beihai, China, and is characterized as Gram-negative, aerobic, and rod-shaped, with yellow colonies that grow optimally at 25°C.
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  • The strain is closely related to Aestuariibaculum suncheonense SC17, with a 98.2% similarity in 16S rRNA gene sequence, leading to its classification as a new species, A
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