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Halophilic-blue-green algae

T D Brock

    Archives of Microbiology
    |February 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Researchers isolated a halophilic blue-green alga, Aphanothece halophytica, from Great Salt Lake. This organism thrives in high salinity, confirming the existence of true halophilic blue-green algae.

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    Area of Science:

    • Microbiology
    • Phycology
    • Extremophile Research

    Background:

    • Blue-green algae, also known as cyanobacteria, are microorganisms found in diverse environments.
    • Great Salt Lake is an extreme environment characterized by high salinity.
    • Previous research has debated the existence of true halophilic (salt-loving) blue-green algae.

    Purpose of the Study:

    • To isolate and characterize a blue-green alga from the hypersaline waters of Great Salt Lake.
    • To determine the salinity tolerance and growth optima of the isolated organism.
    • To provide evidence for the existence of true halophilic blue-green algae.

    Main Methods:

    • Isolation of microorganisms from Great Salt Lake water samples.
    • Culturing the isolated organism at various sodium chloride (NaC1) concentrations.

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  • Microscopic examination and physiological characterization of the alga.

    • Main Results:

    • Successful isolation of a blue-green alga, identified as Aphanothece halophytica.
    • The organism was cultured from waters with salinities up to saturated NaC1 (approximately 30% w/v).
    • Optimum growth occurred at about 16% NaC1, with very slow growth observed even in saturated NaC1.

    Conclusions:

    • Aphanothece halophytica is a true halophilic blue-green alga.
    • The findings support the existence of halophilic cyanobacteria in hypersaline environments.
    • This study contributes to understanding microbial life in extreme conditions.