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Genome sequencing of Catenovulum agarivorans YM01T reveals 15 open-reading frames (ORFs) encoding various agarases. In this study, extracellular proteins of YM01T were precipitated by ammonium sulfate and separated by one-dimensional gel electrophoresis. The results of in-gel agarase activity assay and mass spectrometry analysis revealed that the protein,(More)
Surface seawater in the South Pacific Gyre (SPG) is one of the cleanest oceanic environments on earth, and the photosynthetic primary production is extremely low. Despite the ecological significance of the largest aquatic desert on our planet, microbial community composition in the ultra-oligotrophic seawater remain largely unknown. In this study, we(More)
A novel Gram stain-negative, catalase- and oxidase-positive, strictly aerobic bacterium, designated strain H50T, was isolated from an amphioxus breeding zone in the coastal region of the Yellow Sea, China. Cells were observed to be ovoid or short rods, lacked flagella and were found to contain bacteriochlorophyll a. Poly-beta-hydroxybutyrate was found to be(More)
Quorum sensing (QS) is a population-dependent mechanism for bacteria to synchronize social behaviors such as secretion of virulence factors. The enzymatic interruption of QS, termed quorum quenching (QQ), has been suggested as a promising alternative anti-virulence approach. In order to efficiently identify QQ bacteria, we developed a simple, sensitive and(More)
Competition between bacteria for habitat and resources is very common in the natural environment and is considered to be a selective force for survival. Many strains of the genus Pseudoalteromonas were confirmed to produce bioactive compounds that provide those advantages over their competitors. In our previous study, P. flavipulchra JG1 was found to(More)
A Gram-negative, strictly aerobic, motile, short rod-shaped bacterium with peritrichous flagella, designated JYr12T, was isolated from sediment of an amphioxus breeding zone in the coastal region of Qingdao, China. Strain JYr12T was found to grow optimally at 28 °C, at pH 7.0 and in the presence of 2–3 % (w/v) NaCl. The organism was determined to contain(More)
The Fildes Peninsula has a maritime Antarctic climate and has attracted the interest of scientists for decades. The soil bacterial community and the environmental factors shaping it have been well documented. However, the bacterial community of intertidal sediments, which has been determined to play crucial roles in biogeochemical cycles in temperate(More)
A Gram-negative, non-spore-forming, catalase- and oxidase-positive, aerobic, curved-rod shaped bacterium with polar or subpolar flagellum, designated strain JYr2T, was isolated from a sediment sample collected from an amphioxus breeding zone in the coastal region of Qingdao, China. The organism grew optimally at 37 °C, pH 8–9 and in the presence of 3 %(More)
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