Isolation of Acidophilic Haloarchaeal Strains from Solar Salts
Author Information
Author(s): Minegishi Hiroaki, Mizuki Toru, Echigo Akinobu, Fukushima Tadamasa, Kamekura Masahiro, Usami Ron
Primary Institution: Bio-Nano Electronics Research Center, Toyo University
Hypothesis
Can haloarchaeal strains grow in acidic conditions?
Conclusion
The study successfully isolated several halophilic strains capable of growth in acidic conditions, including a new genus.
Supporting Evidence
- 28 out of 240 salt samples gave colonies on the first enrichment cultures at pH 4.5.
- The most acidophilic strain MH1-52-1 was isolated from a solar salt with a pH of 9.0.
- Growth of the strain MH1-52-1 was optimal at pH 4.4–4.6.
- More than 50 strains were isolated and tested for growth at varying pH levels.
Takeaway
Scientists found some tiny salt-loving microbes that can live in very acidic water, which is surprising because most of their relatives can't.
Methodology
The researchers collected various salt samples and tested their ability to grow in a specially designed medium at different pH levels.
Limitations
The study did not explore the full range of potential acidophilic haloarchaea that may exist in other environments.
Digital Object Identifier (DOI)
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