| culturable phylogenetic diversity of the phylum 'bacteroidetes' from river epilithon and coastal water and description of novel members of the family flavobacteriaceae: epilithonimonas tenax gen. nov., sp. nov. and persicivirga xylanidelens gen. nov., sp. nov. | members of the phylum 'bacteroidetes' are important heterotrophs involved in cycling organic carbon in aquatic habitats. their diversity has been studied by molecular methods in both freshwater and marine habitats and many novel genera and species within this phylum have been characterized in recent years. in this study, we examined the diversity of members of the 'bacteroidetes' that could be readily isolated on solid media from river epilithon and coastal sea water. most (93 %) of the 55 isola ... | 2006 | 16403883 |
| donghaeana dokdonensis gen. nov., sp. nov., isolated from sea water. | a gram-negative, non-motile, non-spore-forming and rod-shaped bacterial strain, dsw-6t, was isolated from sea water and subjected to a polyphasic study. strain dsw-6t grew optimally at 25 degrees c, in the presence of 2 % (w/v) nacl and at ph 7.0-8.0. it was characterized chemotaxonomically as having mk-6 as the predominant menaquinone and iso-c(15 : 0), anteiso-c(15 : 0), iso-c(17 : 0) 3-oh and c(15 : 0) as the major fatty acids (>10 % of total fatty acids). major polar lipids were phosphatidyl ... | 2006 | 16403885 |
| biosynthesis of bile acids in a variety of marine bacterial taxa. | several marine bacterial strains, which were isolated from seawater off the island dokdo, korea, were screened to find new bioactive compounds such as antibiotics. among them, donghaeana dokdonensis strain dsw-6 was found to produce antibacterial agents, and the agents were then purified and analyzed by lc-ms/ms and 1d- and 2d-nmr spectrometries. the bioactive compounds were successfully identified as cholic acid and glycine-conjugated glycocholic acid, the 7alpha-dehydroxylated derivatives (deo ... | 2007 | 18050942 |
| reclassification of donghaeana dokdonensis yoon et al. 2006 as persicivirga dokdonensis comb. nov. and emended descriptions of the genus persicivirga and of persicivirga xylanidelens o'sullivan et al. 2006. | the accurate taxonomic position of donghaeana dokdonensis dsw-6(t) was investigated. phylogenetic analysis revealed that the 16s rrna gene sequences of the strain studied and of persicivirga xylanidelens sw256(t) shared 98.2 % similarity. on the basis of phylogenetic evidence, phenotypic data and dna-dna reassociation values, it is proposed that strain dsw-6(t) be reclassified as persicivirga dokdonensis comb. nov. emended descriptions of the genus persicivirga and of p. xylanidelens are also pr ... | 2009 | 19329614 |
| persicivirga ulvanivorans sp. nov., a marine flavobacteriaceae degrading ulvan from green algae. | a rod-shaped, gram-staining-negative, chemo-organotrophic, heterotrophic, strictly aerobic, non-gliding bacterial strain, designated plrt, able to degrade ulvan, a polysaccharide extracted from green algae (chlorophyta, ulvophyceae) was isolated from faeces of the mollusc aplysia punctata (mollusca, gastropoda) fed with green algae belonging to the genus ulva. its taxonomic position was investigated by a polyphasic approach. strain plrt was dark orange, oxidase-positive, catalase-positive and gr ... | 2010 | 20833882 |
| ulvan lyases isolated from the flavobacteria persicivirga ulvanivorans are the first members of a new polysaccharide lyase family. | ulvans are complex sulfated polysaccharides found in the cell walls of green algae belonging to the genus ulva. these polysaccharides are composed of disaccharide repetition moieties made up of sulfated rhamnose linked to either glucuronic acid, iduronic acid, or xylose. two ulvan lyases of 30 and 46 kda were purified from the culture supernatant of persicivirga ulvanivorans. based on peptide sequencing, the gene encoding the 46-kda ulvan lyase was cloned. sequence analysis revealed that the pro ... | 2011 | 22009751 |