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= Halomonas meridiana =

Taxonomy
Halomonas meridiana is a gram-negative microorganism belonging to the kingdom of Bacteria, the phylum Proteobacteria, the class of Gammaproteobacteria, the order of Oceanospirillales, and the family of Halomonadaceae. . There are several known strains of this microbe including DSM 5425, ACAM 246, ATCC 49692, and CIP 104043. It shares many of the same characteristics as others of the same in its genus. It was placed in this genus due to its close genomic relation to other in the same taxa as well as being halophilic . This species shares a close relationship with the known species Halomonas elongate, Halomonas halmophila, and Halomonas subglaciescola .

Discovery
In 1997, James et al. published a paper describing an organism they had discovered. It was found in the hypersaline lakes located in Vestfold Hills, Antarctica, which contained many undescribed microbes including this organism. Water from the lake was placed on agar plates and incubated. After allowing time for growth, single cells were removed from colonies and grown on new agar places. After 2-4 weeks of incubation, colonies were transferred to a basal media with designed to simulate an organic lake. Many species of microorganisms and several strains of what would later be identified as Halomonus meridiana were found and tested for physical and chemical characteristics using quantitative phylogenetic techniques. .James et al tested for DNA base composition, salt tolerance, and temperature tolerance and mapped the results against those of other known organisms of the same family. After careful study, they determined that the organism found was different from the rest and called the organism Halomonas meridiana due to its close relation to the Halomonas genus. In addition to Antarctica, Halomonas meridiana was also isolated from the host of organisms found living in and on the coral Acropora across the world . The found organism was identified as Halomonas meridiana using sequences of parts of the 16S rRNA gene. The word Halomonas comes from the Greek word halos meaning "salt" and monas meaning "unit" and The word meridiana comes from the word meridian meaning “of or belonging to the south".