Center for Marine Microbiology

Casablanca, Morocco

Center for Marine Microbiology

Casablanca, Morocco

Time filter

Source Type

Zhang D.-F.,Xinjiang Institute of Ecology and Geography | Zhang D.-F.,Yunnan University | Wang H.-F.,Xinjiang Institute of Ecology and Geography | Xiong Z.-J.,Yunnan University | And 7 more authors.
International Journal of Systematic and Evolutionary Microbiology | Year: 2014

A Gram-staining-positive, aerobic, non-motile, irregular coccus, designated strain YIM M13146T, was isolated from a sediment sample collected from the South China Sea at a depth of 2439 m, and its taxonomic position was determined by a polyphasic approach. Optimal growth of the strain was observed at 30 °C (range 5-40 °C), pH 7.0 (pH 6.0-9.0) and 0-1 % NaCl (0-6 %, w/v) on/in tryptic soy agar/broth. Strain YIM M13146T had the major cellular fatty acid anteiso-C15: 0, the predominant respiratory menaquinone MK-9(H4), peptidoglycan type A3γ (LL-DAP-Gly) containing alanine, glycine, glutamic acid and LL-diaminopimelic acid (LL-DAP) and the polar lipids phosphatidylcholine, diphosphatidylglycerol, one unknown phospholipid and several glycolipids. The G+C content of the DNA was 67.2 mol%. Phenotypic and chemotaxonomic characteristics together with 16S rRNA gene sequence analyses showed that strain YIM M13146T was distinct from its close phylogenetic relatives in the genera Propioniferax and Granulicoccus of the family Propionibacteriaceae. Hence, a new genus and species,Mariniluteicoccus flavus gen. nov., sp. nov., is proposed. The type strain ofMariniluteicoccus flavus is YIM M13146T (= DSM 25892T = CCTCC AB 2012055T). © 2014 IUMS.


Zhang D.-F.,Xinjiang Institute of Ecology and Geography | Zhang D.-F.,Yunnan University | Jiang Z.,Yunnan University | Li L.,Xinjiang Institute of Ecology and Geography | And 6 more authors.
International Journal of Systematic and Evolutionary Microbiology | Year: 2014

A Gram-stain-positive, aerobic actinomycete, designated strain YIM M13141T, was isolated from a marine sediment sample from the South China Sea, and its taxonomic position was determined using a polyphasic approach. The strain produced branched substrate mycelium and aerial hyphae, but no diffusible pigments were produced on the media tested. At maturity, substrate mycelium was fragmented and spore chains were formed on aerial hyphae and substrate mycelium. Optimum growth occurred at 28 °C, 1-3 % (w/v) NaCl and pH 7.0. Comparative analysis of the 16S rRNA gene sequence showed that the isolate belongs to the genus Pseudonocardia, showing highest levels of similarity with respect to Pseudonocardia sichuanensis KLBMP 1115T (97.1 %), Pseudonocardia tetrahydrofuranoxydansK1T (97.1 %) and Pseudonocardia kunmingensis YIM 63158T (97.0 %). Whole-organism hydrolysates of the strain contained meso-diaminopimelic acid and the sugars galactose, glucose, mannose and arabinose. The predominant menaquinone was MK-8(H4). The polar lipids detected were diphosphatidylglycerol, phosphatidylcholine, phosphatidylinositol, phosphatidylmethylethanolamine, phosphatidylethanolamine, two unknown phosphoglycolipids and two glycolipids. The major fatty acid was iso-C16: 0. The G+C content of the genomic DNA was 73.1 mol%. DNA-DNA relatedness with P. tetrahydrofuranoxydans DSM 44239T was 42.8±3.5 % (mean±SD). Based on phylogenetic analysis, phenotypic and genotypic data, it is concluded that the isolate represents a novel species of the genusPseudonocardia, for which the name Pseudonocardia sediminis sp. nov. is proposed. The type strain is YIM M13141T (= DSM 45779T = JCM 18540T). © 2014 IUMS.


Huang X.-F.,Center for Marine Microbiology | Liu Y.J.,Center for Marine Microbiology | Dong J.-D.,Center for Marine Microbiology | Qu L.-Y.,State Oceanic Administration | And 4 more authors.
International Journal of Systematic and Evolutionary Microbiology | Year: 2014

A nitrogen-fixing bacterium, designated strain SCSIO N0430T, was isolated from a mangrove sediment sample. Analysis of the sequence of the nifH gene responsible for nitrogen fixation in this strain indicated a close relationship to an uncultured bacterium ZNZ-D11 (GenBank accession no. JF896696). 16S rRNA gene sequence analysis revealed that this isolate had less than 93 % similarity to its closest relative, Sunxiuqinia elliptica DQHS4T. A phylogenetic tree reconstructed based on 16S rRNA gene sequences revealed that strain SCSIO N0430T was a member of the phylum Bacteroidetes. Chemotaxonomic and physiological characteristics, including phospholipids and major fatty acids, readily distinguished the isolate from established members of the phylum Bacteroidetes. It is concluded that strain SCSIO N0430T represents a novel genus and species, for which the name Mangrovibacterium diazotrophicum gen. nov., sp. nov. is proposed, with the type strain of the species SCSIO N0430T (= KCTC 32129T = DSM 27148T = JCM 19152T). Based on phylogenetic characteristics and 16S rRNA gene signature nucleotide patterns, the three genera Sunxiuqinia, Prolixibacter andMangrovibacterium are proposed to make up a novel family,Prolixibacteraceae fam. nov., in the order Bacteroidales. © 2014 IUMS.

Loading Center for Marine Microbiology collaborators
Loading Center for Marine Microbiology collaborators