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. 2023 Dec;513(Suppl 1):S10-S13.
doi: 10.1134/S0012496623700795. Epub 2023 Dec 19.

Effect of Salinity on Reproduction and Fatty Acid Profile of the Microalga Nitzschia сf. thermaloides

N S Repkina  1 , V P Voronin  2 , O I Davidovich  3 , N A Davidovich  3 , S A Murzina  4
Affiliations

Effect of Salinity on Reproduction and Fatty Acid Profile of the Microalga Nitzschia сf. thermaloides

N S Repkina et al. Dokl Biol Sci. 2023 Dec.

Abstract

The microalga Nitzschia cf. thermaloides was found in reservoirs of mud volcanoes in eastern Crimea. The species was observed to have a wide range of halotolerance and, in particular, to be capable of vegetative reproduction within a substrate salinity range of 0-110‰. The effect of salinity on the fatty acid (FA) profile was for the first time studied in N. cf. thermaloides. The quantitative and qualitative FA composition remained unchanged regardless of salinity, suggesting maintenance of a stable compacted membrane structure, which probably contributes to the species adaptation to salinity. Saturated FAs accounted for a major portion of total FAs, and the species was therefore assumed to provide a potentially valuable source of saturated FAs for biotechnology and an alternative raw material for biofuel.

Keywords: fatty acids; lipids; microalgae; salinity; tolerance.

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