| molecular classification of commercial spirulina strains and identification of their sulfolipid biosynthesis genes. | cyanobacterial strains of the genus spirulina have recently been identified as an excellent source of sulfolipids, some of which possess anti-hiv properties. thus, to investigate the distribution of sufolipid biosynthesis pathways in spirulina, a genetic screening/phylogentic study was performed. five different strains of spirulina [spirulina (jiangmen), spirulina sp., s. platensis, s. maxima, and spirulina seawater] sourced from different locations were initially classified via 16s rdna sequenc ... | 2011 | 21532318 |
| genotypic diversity of oscillatoriacean strains belonging to the genera geitlerinema and spirulina determined by 16s rdna restriction analysis. | genotypic diversity of several cyanobacterial strains mostly isolated from marine or brackish waters, belonging to the genera geitlerinema and spirulina, was investigated by amplified 16s ribosomal dna restriction analysis and compared with morphological features and response to salinity. cluster analysis was performed on amplified 16s rdna restriction profiles of these strains along with profiles obtained from sequence data of five spirulina-like strains, including three representatives of the ... | 2003 | 12732964 |
| bacterial community associated with the intestinal tract of p. monodon in commercial farms. | the potentially important roles of intestinal bacteria on immune response, disease resistance, and nutrition for the black tiger shrimp penaeus monodon have been increasingly investigated. however, so far, little is known about the intestinal bacterial community of the shrimp in the commercial aquaculture settings. in this study, the intestinal bacterial communities of juvenile p. monodon (70 individuals) from eight commercial farms in thailand were examined using 16s rdna pcr-dgge, and seven 16 ... | 2011 | 21915632 |
| the halotolerance and phylogeny of cyanobacteria with tightly coiled trichomes (spirulina turpin) and the description of halospirulina tapeticola gen. nov., sp. nov. | the morphologies, halotolerances, temperature requirements, pigment compositions and 16s rrna gene sequences of five culture collection strains and six novel isolates of cyanobacteria with helical, tightly coiled trichomes were investigated. all strains were very similar morphologically and could be assigned to the genus spirulina (or section euspirulina sensu geitler), according to traditional classification. however, the isolates showed significantly different requirements for salinity and tem ... | 2000 | 10843072 |
| matching molecular diversity and ecophysiology of benthic cyanobacteria and diatoms in communities along a salinity gradient. | the phylogenetic diversity of oxygenic phototrophic microorganisms in hypersaline microbial mats and their distribution along a salinity gradient were investigated and compared with the halotolerances of closely related cultivated strains. segments of 16s rrna genes from cyanobacteria and diatom plastids were retrieved from mat samples by dna extraction and polymerase chain reaction (pcr), and subsequently analysed by denaturing gradient gel electrophoresis (dgge). sequence analyses of dna from ... | 2000 | 11220307 |