| pseudovibrio denitrificans gen. nov., sp. nov., a marine, facultatively anaerobic, fermentative bacterium capable of denitrification. | two denitrifying strains of heterotrophic, facultatively anaerobic, marine bacteria, designated dn34(t) and dn33, were isolated from sea-water samples collected in nanwan bay, kenting national park, taiwan. they were gram-negative. cells in late exponential to early stationary phase of growth were predominantly straight or curved rods, but y- or v-shaped forms were also observed. they were motile by means of one to several lateral or subpolar flagella. both strains required nacl for growth and e ... | 2004 | 15545476 |
| pseudovibrio ascidiaceicola sp. nov., isolated from ascidians (sea squirts). | two bacterial strains, f423t and f10102, were isolated from two ascidians, polycitor proliferus and botryllidae sp., respectively, which were collected from a beach on the boso peninsula in japan. cells of both isolates were motile, rod-shaped and formed star-shaped aggregates in the early stage of exponential growth, but were coccoid in stationary growth phase. the results of 16s rrna gene sequence analysis, fatty acid analysis, dna-dna hybridization experiments and physiological and biochemica ... | 2006 | 16449437 |
| characterization of a culturable alphaproteobacterial symbiont common to many marine sponges and evidence for vertical transmission via sponge larvae. | a closely related group of alphaproteobacteria were found to be present in seven genera of marine sponges from several locations and were shown to be transferred between sponge generations through the larvae in one of these sponges. isolates of the alphaproteobacterium were cultured from the sponges axinella corrugata, mycale laxissima, monanchora unguifera, and niphates digitalis from key largo, florida; didiscus oxeata and monanchora unguifera from discovery bay, jamaica; an acanthostronglyoph ... | 2006 | 16672523 |
| physiological, ecological, and phylogenetic characterization of stappia, a marine co-oxidizing bacterial genus. | bacteria play a major role in marine co cycling, yet very little is known about the microbes involved. thirteen co-oxidizing stappia isolates obtained from existing cultures, macroalgae, or surf samples representing geographically and ecologically diverse habitats were characterized using biochemical, physiological, and phylogenetic approaches. all isolates were aerobic chemoorganotrophs that oxidized co at elevated (1,000 ppm) and ambient-to-subambient concentrations (<0.3 ppm). all contained t ... | 2007 | 17142374 |
| abundance and bioactivity of cultured sponge-associated bacteria from the mediterranean sea. | in this study, the search for new antibiotics was combined with quantitative ecological studies. the cultured fraction of the associated bacterial communities from ten different mediterranean sponge species was investigated. to obtain quantitative and qualitative data of sponge-associated bacterial communities and to expand the cultured diversity, different media were used. the largest morphological diversity and highest yield of isolates was obtained by using oligotrophic media, which consisted ... | 2008 | 17497228 |
| pseudovibrio japonicus sp. nov., isolated from coastal seawater in japan. | a gram-negative, motile, rod-shaped bacterium (wsf2(t)) was isolated from coastal seawater of the boso peninsula in japan. phylogenetic analysis based on 16s rrna gene sequences showed that strain wsf2(t) represented a separate lineage within the genus pseudovibrio. the dna g+c content of strain wsf2(t) was 51.7 mol%. dna-dna hybridization values between strain wsf2(t) and the type strains of pseudovibrio species were significantly lower than those accepted as the phylogenetic definition of a sp ... | 2007 | 17766853 |
| pseudovibrio denitrificans strain z143-1, a heptylprodigiosin-producing bacterium isolated from a philippine tunicate. | microbial isolate z143-1 found to be associated with an unidentified tunicate was characterized due to its significant antimicrobial activity. z143-1 is similar to pseudovibrio ascidiaceicola and pseudovibrio denitrificans in morphological, physiological and biochemical characteristics, except for its ability to ferment glucose and produce a characteristic red pigment. fatty acid methyl ester analysis revealed a predominance of the fatty acid 18:1 omega7c at 80.55%, at levels slightly lower than ... | 2007 | 18031339 |
| unnarmicins a and c, new antibacterial depsipeptides produced by marine bacterium photobacterium sp. mbic06485. | two new antibiotic depsipeptides, unnarmicins c (1) and a (2), were isolated from the fermentation broth of a marine bacterium, photobacterium sp. strain mbic06485. the structure of 1 was established by spectroscopic studies and chiral analyses of its chemical degradation/conversion products, and that of 2 by comparing its nmr, ms, and cd data with those of 1. both compounds selectively inhibited the growth of two strains belonging to the genus pseudovibrio, one of the most prevalent genera in t ... | 2008 | 18305354 |
| characterization of the microbial community and polyketide biosynthetic potential in the palmerolide-producing tunicate synoicum adareanum. | palmerolide a (1) is a macrolide isolated from the antarctic tunicate synoicum adareanum that is of interest due to its potential as an antimelanoma drug. biosynthesis is predicted to occur via a hybrid pks-nrps pathway within s. adareanum, but the identity of the palmerolide-producing organism (host or putative host-associated microorganism) has not been established. microscopic observation revealed a dense microbial community inside the tunicate, and evidence from 16s rrna gene dgge profiles a ... | 2008 | 18950228 |
| isolation and analysis of bacteria with antimicrobial activities from the marine sponge haliclona simulans collected from irish waters. | samples of the marine sponge haliclona simulans were collected from irish coastal waters, and bacteria were isolated from these samples. phylogenetic analyses of the cultured isolates showed that four different bacterial phyla were represented; bacteriodetes, actinobacteria, proteobacteria, and firmicutes. the sponge bacterial isolates were assayed for the production of antimicrobial substances, and biological activities against gram-positive and gram-negative bacteria and fungi were demonstrate ... | 2009 | 18953608 |
| microbial diversity associated with algae, ascidians and sponges from the north coast of são paulo state, brazil. | little is known about the microbial diversity associated with marine macroorganisms, despite the vital role microorganisms may play in marine ecosystems. the aim of the present study was to investigate the diversity of bacteria and fungi isolated from eight marine invertebrate and one algae samples. data derived from ardra and sequencing analyses allowed the identification of marine-derived microorganisms isolated from those samples. microbial strains identified up to the genus level revealed 14 ... | 2010 | 19879115 |
| isolation, characterization and phylogeny of sponge-associated bacteria with antimicrobial activities from brazil. | bacteria associated with marine sponges represent a rich source of bioactive metabolites. the aim of this study was to isolate and characterize bacteria with antimicrobial activities from brazilian sponges. a total of 158 colony-forming units were isolated from nine sponge species. among these, 12 isolates presented antimicrobial activities against pathogenic bacteria. based on comparative sequence analysis of their 16s rrna genes, the sponge-associated bacterial strains could be subdivided into ... | 2010 | 20600863 |
| diversity and antimicrobial activity of pseudovibrio spp. from irish marine sponges. | to evaluate the diversity and antimicrobial activity present among pseudovibrio spp. isolated from marine sponges. | 2011 | 21435124 |
| Identification of the antibacterial compound produced by the marine epiphytic bacterium Pseudovibrio sp. D323 and related sponge-associated bacteria. | Surface-associated marine bacteria often produce secondary metabolites with antagonistic activities. In this study, tropodithietic acid (TDA) was identified to be responsible for the antibacterial activity of the marine epiphytic bacterium Pseudovibrio sp. D323 and related strains. Phenol was also produced by these bacteria but was not directly related to the antibacterial activity. TDA was shown to effectively inhibit a range of marine bacteria from various phylogenetic groups. However TDA-prod ... | 2011 | 21892353 |
| diversity and antimicrobial activities of microbes from two irish marine sponges, suberites carnosus and leucosolenia sp. | aims: to evaluate the diversity and antimicrobial activity of bacteria from the marine sponges suberites carnosus and leucosolenia sp. methods and results: two hundred and thirty-seven bacteria were isolated from the sponges s. carnosus (demospongiae) and leucosolenia sp. (calcarea). isolates from the phyla actinobacteria, bacteroidetes, firmicutes and proteobacteria were obtained. isolates of the genus pseudovibrio were dominant among the bacteria from s. carnosus, whereas pseudoalteromonas a ... | 2011 | 22129274 |