| description of cellulophaga baltica gen. nov., sp. nov. and cellulophaga fucicola gen. nov., sp. nov. and reclassification of [cytophaga] lytica to cellulophaga lytica gen. nov., comb. nov. | phenotypic data indicate that gliding, yellow/orange-pigmented, agar-digesting bacterial strains were members of the cytophaga-flavobacterium-bacteroides (cfb) group. the strains were isolated from the surface of the marine benthic macroalga fucus serratus l. and the surrounding seawater at three localities in danish waters. the bacteria were gram-negative, flexirubin-negative, aerobic, catalase-positive and oxidase-negative and were psychrophilic and halophilic. all strains utilized d-fructose, ... | 1999 | 10425785 |
| description of cellulophaga algicola sp. nov., isolated from the surfaces of antarctic algae, and reclassification of cytophaga uliginosa (zobell and upham 1944) reichenbach 1989 as cellulophaga uliginosa comb. nov. | a group of strains with potent extracellular enzymic activity were isolated from the surfaces of the chain-forming sea-ice diatom melosira and from an unidentified macrophyte collected from the eastern antarctic coastal zone. 16s rdna sequence analysis indicated that the strains belonged to the genus cellulophaga and showed greatest similarity to the species cellulophaga baltica (sequence similarity 97%). phenotypic characteristics, dna base composition and dna-dna hybridization values clearly s ... | 2000 | 11034497 |
| [structure of acidic o-specific polysaccharide from the marine bacterium cellulophaga baltica]. | the structure of an acidic o-specific polysaccharide from the marine bacterium cellulophaga baltica was established by chemical methods of analysis and nmr spectroscopy. the polysaccharide was shown to consist of repeating tetrasaccharide units containing two mannose residues, one n-acetyl-d-glucosamine residue, and one d-glucuronic acid residue. an o-acetyl group was also found in the polysaccharide in nonstoichiometric amount. thus, this polysaccharide had the following structure: [carbohydrat ... | 2007 | 17375664 |
| large variabilities in host strain susceptibility and phage host range govern interactions between lytic marine phages and their flavobacterium hosts. | phages are a main mortality factor for marine bacterioplankton and are thought to regulate bacterial community composition through host-specific infection and lysis. in the present study we demonstrate for a marine phage-host assemblage that interactions are complex and that specificity and efficiency of infection and lysis are highly variable among phages infectious to strains of the same bacterial species. twenty-three bacteroidetes strains and 46 phages from swedish and danish coastal waters ... | 2007 | 17766444 |
| bacteriophages drive strain diversification in a marine flavobacterium: implications for phage resistance and physiological properties. | genetic, structural and physiological differences between strains of the marine bacterium cellulophaga baltica mm#3 (flavobacteriaceae) developing in response to the activity of two virulent bacteriophages, phi s(m) and phi s(t), was investigated during 3 weeks incubation in chemostat cultures. a distinct strain succession towards increased phage resistance and a diversification of the metabolic properties was observed. during the incubation the bacterial population diversified from a single str ... | 2009 | 19508553 |
| variably lytic infection dynamics of large bacteroidetes podovirus phi38:1 against two cellulophaga baltica host strains. | bacterial viruses (phages) influence global biogeochemical cycles by modulating bacterial mortality, metabolic output and evolution. however, our understanding of phage infections is limited by few methods and environmentally relevant model systems. prior work showed that cellulophaga baltica phage ϕ38:1 infects its original host lytically, and an alternative host either delayed lytically or lysogenically. here we investigate these infections through traditional and marker-based approaches, and ... | 2015 | 26248067 |
| contrasting genomic patterns and infection strategies of two co-existing bacteroidetes podovirus genera. | bacterial viruses (phages) are abundant, ecologically important biological entities. however, our understanding of their impact is limited by model systems that are primarily not well represented in nature, e.g. enterophages and their hosts. here, we investigate genomic characteristics and infection strategies among six aquatic bacteroidetes phages that represent two genera of exceptionally large (∼70-75 kb genome) podoviruses, which were isolated from the same seawater sample using cellulophaga ... | 2014 | 24428166 |
| twelve previously unknown phage genera are ubiquitous in global oceans. | viruses are fundamental to ecosystems ranging from oceans to humans, yet our ability to study them is bottlenecked by the lack of ecologically relevant isolates, resulting in "unknowns" dominating culture-independent surveys. here we present genomes from 31 phages infecting multiple strains of the aquatic bacterium cellulophaga baltica (bacteroidetes) to provide data for an underrepresented and environmentally abundant bacterial lineage. comparative genomics delineated 12 phage groups that (i) e ... | 2013 | 23858439 |