Saccharospirillum impatiens gen. nov., sp. nov., a novel γ-Proteobacterium isolated from hypersaline Ekho Lake (East Antarctica)
Labrenz, Matthias and Lawson, Paul A. and Tindall, Brian J. and Collins, Matthew D. and Hirsch, Peter,, 53, 653-660 (2003),
doi = https://doi.org/10.1099/ijs.0.02406-0,
publicationName = Microbiology Society,
issn = 1466-5026,
abstract= Five Gram-negative, motile, aerobic to microaerophilic spirilla were isolated from various depths of the hypersaline, heliothermal and meromictic Ekho Lake (East Antarctica). The strains are oxidase- and catalase-positive, metabolize a variety of sugars and carboxylic acids and have an absolute requirement for sodium ions. The predominant fatty acids of the organisms are C16 : 1 ω7c, C16 : 0 and C18 : 1 ω7c, with C10 : 1 3-OH, C10 : 0 3-OH, C12 : 0 3-OH, C14 : 1 3-OH, C14 : 0 3-OH and C19 : 1 present in smaller amounts. The main polar lipids are diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and phosphatidylmonomethylamine. The DNA base composition of the strains is 54–55 mol% G+C. 16S rRNA gene sequence comparisons show that the isolates are related to the genera Oceanospirillum, Pseudospirillum, Marinospirillum, Halomonas and Chromohalobacter in the γ-Proteobacteria. Morphological, physiological and genotypic differences from these previously described genera support the description of a novel genus and species, Saccharospirillum impatiens gen. nov., sp. nov. The type strain is EL-105T (=DSM 12546T=CECT 5721T).,
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