1887

Abstract

A novel agarase-producing, non-endospore-forming marine bacterium, WH0801, was isolated from a fresh seaweed sample collected from the coast of Weihai, China. Preliminary characterization based on 16S rRNA gene sequence analysis showed that WH0801 shared 96.1 % similarity with MKT 106, the type species of the genus . A polyphasic taxonomic study was conducted and confirmed the phylogenetic affiliation of strain WH0801 to the genus . Isolate WH0801 produces light-yellow-pigmented colonies; cells are Gram-stain-negative, straight or curved rods, which are motile with a single polar flagellum. Strain WH0801 grew in 0.5–5 % NaCl, with optimum growth at 3 % NaCl, and its optimal pH and cultivation temperature were 8.4–8.6 and 28–32 °C, respectively. Data from biochemical tests, whole-cell fatty acid profiling, 16S rRNA gene sequence studies and DNA–DNA hybridization clearly indicated that isolate WH0801 represented a novel species within the genus , for which the name sp. nov. is proposed. The type strain of sp. nov. is WH0801 (=NRRL B-59247 =CGMCC 1.10131).

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2011-03-01
2019-10-15
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