| characterization of several psychrobacter strains isolated from antarctic environments and description of psychrobacter luti sp. nov. and psychrobacter fozii sp. nov. | eleven psychrophilic bacteria isolated from antarctic coastal marine environments were subjected to a polyphasic taxonomic study. the isolates were oxidase-positive, halotolerant, gram-negative, non-motile coccobacilli with a strictly oxidative metabolism. the dna g + c content ranged from 44 to 47 mol%. dna-dna hybridization experiments showed six homology groups, two of them related at the species level to the type strain of psychrobacter immobilis, lmg 7203t (70-83%). the highest dna relatedn ... | 2003 | 12892132 |
| molecular microbial diversity of a soil sample and detection of ammonia oxidizers from cape evans, mcmurdo dry valley, antarctica. | the aim of our study was to estimate the uncultured eubacterial diversity of a soil sample collected below a dead seal, cape evans, mcmurdo, antarctica by an ssu rdna gene library approach. our study by sequencing of clones from ssu rdna gene library approach revealed high diversity in the soil sample from antarctica. more than 50% of clones showed homology to cytophaga-flavobacterium-bacteroides group; sequences also belonged to alpha, beta, gamma proteobacteria, thermus-deinococcus and high gc ... | 2007 | 16517136 |
| membrane vesicles: a common feature in the extracellular matter of cold-adapted antarctic bacteria. | many gram-negative, cold-adapted bacteria from the antarctic environment produce large amounts of extracellular matter, which has potential biotechnology applications. we examined the ultrastructure of extracellular matter from five antarctic bacteria (shewanella livingstonensis nf22(t), shewanella vesiculosa m7(t), pseudoalteromonas sp. m4.2, psychrobacter fozii nf23(t), and marinobacter guineae m3b(t)) by transmission electron microscopy after high-pressure freezing and freeze substitution. al ... | 2010 | 20127086 |
| diversity and antagonistic activity of sea ice bacteria isolated from the sea of japan. | the aim of the study was to survey cultivable heterotrophic bacteria from sea ice samples collected from peter the great bay of the sea of japan, and to test the isolates for antagonistic activity. a total of 195 strains were isolated and investigated by a phenotypic approach. the 16s rrna gene sequence analysis of thirty eight strains revealed primarily representatives of the class gammaproteobacteria, phylum bacteroidetes, and phylum actinobacteria. members of the class alphaproteobacteria wer ... | 2008 | 21558710 |