| diversity and physiology of polyhydroxyalkanoate-producing and -degrading strains in microbial mats. | photosynthetic microbial mats are sources of microbial diversity and physiological strategies that reflect the physical and metabolic interactions between their resident species. this study focused on the diversity and activity of polyhydroxyalkanoate-producing and -degrading bacteria and their close partnership with cyanobacteria in an estuarine and a hypersaline microbial mat. the aerobic heterotrophic population was characterized on the basis of lipid biomarkers (respiratory quinones, sphingo ... | 2010 | 20618859 |
| Formation of polyhydroxyalkanoate in aerobic anoxygenic phototrophic bacteria and its relationship to carbon source and light availability. | Aerobic anoxygenic phototrophic bacteria (AAPB) are unique players in carbon cycling in the ocean. Cellular carbon storage is an important mechanism regulating the nutrition status of AAPB but is not yet well understood. In this paper, six AAPB species (Dinoroseobacter sp. JL1447, Roseobacter denitrificans OCh 114, Roseobacter litoralis OCh 149, Dinoroseobacter shibae DFL 12(T), Labrenzia alexandrii DFL 11(T), and Erythrobacter longus DSMZ 6997) were examined, and all of them demonstrated the ab ... | 2011 | 21908634 |
| reclassification of the polyphyletic genus prosthecomicrobium to form two novel genera, vasilyevaea gen. nov. and bauldia gen. nov. with four new combinations: vasilyevaea enhydra comb. nov., vasilyevaea mishustinii comb. nov., bauldia consociata comb. nov. and bauldia litoralis comb. nov. | species of the genus prosthecomicrobium are noted for their numerous cellular appendages or prosthecae that extend from the cells. this investigation confirms that the genus is polyphyletic based on an extensive analysis of the 16s rrna gene sequences of several named species of the genus. the analyses indicate that some prosthecomicrobium species are more closely related to non-prosthecate genera, including devosia, labrenzia, blastochloris, methylosinus, mesorhizobium and kaistia, than they ar ... | 2010 | 20118292 |
| description of labrenzia alexandrii gen. nov., sp. nov., a novel alphaproteobacterium containing bacteriochlorophyll a, and a proposal for reclassification of stappia aggregata as labrenzia aggregata comb. nov., of stappia marina as labrenzia marina comb. nov. and of stappia alba as labrenzia alba comb. nov., and emended descriptions of the genera pannonibacter, stappia and roseibium, and of the species roseibium denhamense and roseibium hamelinense. | a slightly pink-coloured strain, strain dfl-11(t), was isolated from single cells of the marine dinoflagellate alexandrium lusitanicum and was found to contain the genes encoding two proteins of the photosynthetic reaction centre, pufl and pufm. 16s rrna gene sequence analysis revealed that the novel strain belonged to the alpha-2 subgroup of the proteobacteria and was most closely related to stappia aggregata (97.7 % similarity), stappia alba (98.0 %) and stappia marina (98.0 %). dark-grown cel ... | 2007 | 17473266 |
| who is in there? exploration of endophytic bacteria within the siphonous green seaweed bryopsis (bryopsidales, chlorophyta). | associations between marine seaweeds and bacteria are widespread, with endobiotic bacterial-algal interactions being described for over 40 years. also within the siphonous marine green alga bryopsis, intracellular bacteria have been visualized by electron microscopy in the early '70s, but were up to now never molecularly analyzed. to study this partnership, we examined the presence and phylogenetic diversity of microbial communities within the cytoplasm of two bryopsis species by combining fluor ... | 2011 | 22028882 |
| rubrimonas shengliensis sp. nov. and polymorphum gilvum gen. nov., sp. nov., novel members of alphaproteobacteria from crude oil contaminated saline soil. | four bacterial strains were isolated from a crude oil contaminated saline soil in shengli oilfield, china. strains sl014b-28a2(t) and sl014b-80a1 were most closely related to rubrimonas cliftonensis och 317(t), while strains sl003b-26a1(t) and sl003b-26a2 were most closely related to but readily different from the species in the pannonibacter-labrenzia-roseibium-stappia cluster. the major fatty acids were c(18:1)ω7c, c(16:0), c(18:0) and 11-methyl c(18:1)ω7c, and c(18:1)ω7c, 11-methyl c(18:1)ω7c ... | 2011 | 21600718 |