Query: NC_013791:579842 Bacillus pseudofirmus OF4 chromosome, complete genome Lineage: Bacillus pseudofirmus; Bacillus; Bacillaceae; Bacillales; Firmicutes; Bacteria General Information: This strain was isolated from soil in New York State by alkaline enrichment cultures. Because of its pH range and genetic accessibility, this alkaliphile has been extensively used as the model organism for studies of the bioenergetics of life at extremely high pH. This organism is a facultative, extreme alkaliphile that grows non-fermentatively as well as fermentatively in a pH range from near neutral to above pH 11.2.
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General Information: Trichodesmium erythraeum strain IMS101 was isolated from the North Carolina coast in 1992 and grows in straight filaments. Filamentous marine cyanobacterium. This filamentous marine cyanobacterium is a nitrogen-fixing organism that contribues a significant amount of the global fixed nitrogen each year. These bacteria are unusual in that nitrogen fixation takes place in a differentiated cell called the diazocyte which is different from the nitrogen-fixing differentiated cell (heterocyst) found in other cyanobacteria. The diazocyte is developed in order to protect the oxygen-sensitive nitrogenases and includes a number of changes including production of more membranes and down-regulation of photosynthetic activity during times of peak nitrogen fixation (noontime). This organism gives the Red Sea its name when large blooms appear and is one of the organisms most often associated with large blooms in marine waters.