| Reclassification of the three Krokinobacter species into the genus Dokdonia as Dokdonia genika comb. nov., Dokdonia diaphora comb. nov. and Dokdonia eikasta comb. nov. and emended description of the genus Dokdonia Yoon et al. 2005. | The genera Dokdonia and Krokinobacter, members of the family Flavobacteriaceae in the phylum Bacteroidetes, were found to be phylogenetically closely related from the result of 16S rRNA gene sequence analysis. Dokdonia donghaensis DSW-1(T) exhibited 16S rRNA gene sequence similarity values of 99.3, 98.1 and 98.1 % to K. genikus Cos-13(T), K. diaphorus MSKK-32(T) and K. eikastus PMA-26(T), respectively. The major fatty acids (>10 % of the total fatty acids) found in the four strains were iso-C(15 ... | 2011 | 21984677 |
| genomics of the proteorhodopsin-containing marine flavobacterium dokdonia sp. strain med134. | proteorhodopsin phototrophy is expected to have considerable impact on the ecology and biogeochemical roles of marine bacteria. however, the genetic features contributing to the success of proteorhodopsin-containing bacteria remain largely unknown. we investigated the genome of dokdonia sp. strain med134 (bacteroidetes) for features potentially explaining its ability to grow better in light than darkness. med134 has a relatively high number of peptidases, suggesting that amino acids are the main ... | 2011 | 22003006 |
| light-induced transcriptional responses associated with proteorhodopsin-enhanced growth in a marine flavobacterium. | proteorhodopsin (pr) is a photoprotein that functions as a light-driven proton pump in diverse marine bacteria and archaea. recent studies have suggested that pr may enhance both growth rate and yield in some flavobacteria when grown under nutrient-limiting conditions in the light. the direct involvement of pr, and the metabolic details enabling light-stimulated growth, however, remain uncertain. here, we surveyed transcriptional and growth responses of a pr-containing marine flavobacterium duri ... | 2011 | 21472017 |
| constitutive expression of the proteorhodopsin gene by a flavobacterium strain representative of the proteorhodopsin-producing microbial community in the north sea. | proteorhodopsin (pr), a photoactive proton pump containing retinal, is present in approximately half of all bacteria in the ocean, but its physiological role is still unclear, since very few strains carrying the pr gene have been cultured. the aim of this work was to characterize pr diversity in a north sea water sample, cultivate a strain representative of north sea pr clusters, and study the effects of light and carbon concentration on the expression of the pr gene. a total of 117 pr sequences ... | 2010 | 20305030 |
| gangjinia marincola gen. nov., sp. nov., a marine bacterium of the family flavobacteriaceae. | a novel strictly aerobic, orange-pigmented, gram-stain-negative bacterium, designated strain gj16(t), was isolated from coastal seawater of gangjin bay, the southernmost part of the korean peninsula, and subjected to a polyphasic taxonomic study. it grew optimally at 25-30 °c, at ph 7.0-8.0 and in the presence of 3 % nacl. comparative 16s rrna gene sequence analysis revealed that strain gj16(t) formed a distinct lineage within the family flavobacteriaceae and shared less than 91.2 % 16s rrna gen ... | 2011 | 20228204 |
| light stimulates growth of proteorhodopsin-containing marine flavobacteria. | proteorhodopsins are bacterial light-dependent proton pumps. their discovery within genomic material from uncultivated marine bacterioplankton caused considerable excitement because it indicated a potential phototrophic function within these organisms, which had previously been considered strictly chemotrophic. subsequent studies established that sequences encoding proteorhodopsin are broadly distributed throughout the world's oceans. nevertheless, the role of proteorhodopsins in native marine b ... | 2007 | 17215843 |
| enhanced biofilm formation and increased resistance to antimicrobial agents and bacterial invasion are caused by synergistic interactions in multispecies biofilms. | most biofilms in their natural environments are likely to consist of consortia of species that influence each other in synergistic and antagonistic manners. however, few reports specifically address interactions within multispecies biofilms. in this study, 17 epiphytic bacterial strains, isolated from the surface of the marine alga ulva australis, were screened for synergistic interactions within biofilms when present together in different combinations. four isolates, microbacterium phyllosphaer ... | 2006 | 16751497 |
| dokdonia donghaensis gen. nov., sp. nov., isolated from sea water. | two gram-negative, non-motile, non-spore-forming, slightly halophilic bacterial strains, dsw-1t and dsw-21, were isolated from sea water and subjected to a polyphasic taxonomic study. they grew optimally at 30 degrees c and in the presence of 2 % (w/v) nacl. strains dsw-1t and dsw-21 were characterized chemotaxonomically as containing mk-6 as the predominant menaquinone and iso-c15 : 0, iso-c17 : 0 3-oh and iso-c15 : 1 as the major fatty acids. their dna g+c content was 38 mol%. strains dsw-1t a ... | 2005 | 16280490 |