Cell membrane fatty acid and pigment composition of the psychrotolerant cyanobacterium Nodularia spumigena CHS1 isolated from Hopar glacier, Pakistan View Full Text


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Article Info

DATE

2019-10-26

AUTHORS

Noor Hassan, Alexandre M. Anesio, Muhammad Rafiq, Jens Holtvoeth, Ian Bull, Christopher J. Williamson, Fariha Hasan

ABSTRACT

In the present study, cyanobacterium isolate CHS1 isolated from Hopar glacier, Pakistan, was analyzed for the first time for cell membrane fatty acids and production of pigments. Sequencing of the 16-23S intergenetic region confirmed identification of the isolate CHS1 as Nodularia spumigena. All chlorophyll and carotenoid pigments were quantified using high-performance liquid chromatography and experiments to test tolerance against a range of physico-chemical conditions were conducted. Likewise, the fatty acid profile of the cell membrane CHS1 was analyzed using gas chromatography and mass spectroscopy. The cyanobacterium isolate CHS1 demonstrated tolerance to 8 g/L% NaCl, 35°C and pH 5–9. The characteristic polyunsaturated fatty acid (PUFA) of isolate CHS1, C18:4, was observed in fatty acid methyl esters (FAMEs) extracted from the cell membrane. CHS1 was capable of producing saturated fatty acids (SFA) (e.g., C16:0), monounsaturated fatty acids (MUFA) (e.g., C18:1) and polyunsaturated fatty acids (e.g., C20:5) in the cell membrane. In this study, we hypothesize that one mechanism of cold adaptation displayed by isolate CHS1 is the accumulation of high amounts of PUFA in the cell membrane. More... »

PAGES

135-145

References to SciGraph publications

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    http://scigraph.springernature.com/pub.10.1007/s00792-019-01141-4

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    http://dx.doi.org/10.1007/s00792-019-01141-4

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    https://app.dimensions.ai/details/publication/pub.1122119199

    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/31655895


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    74 present study
    75 production
    76 production of pigments
    77 profile
    78 range
    79 region
    80 sequencing
    81 spectroscopy
    82 spumigena
    83 study
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    85 tolerance
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