Bacterial species that are sensitive to salt can be classified as

Expert Solution

Bacterial species that are sensitive to salt can be classified as Halobacteriaceae.

Halophiles are categorized by the extent of their halotolerance: slight, moderate, or extreme. Slight halophiles prefer 0.3 to 0.8 M (1.7 to 4.8%—seawater is 0.6 M or 3.5%), moderate halophiles 0.8 to 3.4 M (4.7 to 20%), and extreme halophiles 3.4 to 5.1 M (20 to 30%) salt content.^[2] Halophiles require sodium chloride (salt) for growth, in contrast to halotolerant organisms, which do not require salt but can grow under saline conditions.

Halobacteriaceae is a family that includes a large part of halophilic archaea.The genus Halobacterium under it has a high tolerance for elevated levels of salinity. Some species of halobacteria have acidic proteins that resist the denaturing effects of salts. Halococcus is another genus of the family Halobacteriaceae.

Some hypersaline lakes are habitat to numerous families of halophiles. For example, the Makgadikgadi Pans in Botswana form a vast, seasonal, high-salinity water body that manifests halophilic species within the diatom genus Nitzschia in the family Bacillariaceae, as well as species within the genus Lovenula in the family Diaptomidae.Owens Lake in California also contains a large population of the halophilic bacterium Halobacterium halobium.

Nightingale answered 2 years ago

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