Tetraedron minimum, first reported member of hydrodictyaceae to accumulate secondary carotenoids

Philipp Doppler, Christoph Kornpointner, Heidi Halbwirth, Daniel Remias, Oliver Spadiut

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

10 Zitate (Scopus)

Abstract

We isolated a novel strain of the microalga Tetraedron minimum in Iceland from a terrestrial habitat. During long-term cultivation, a dish culture turned orange, indicating the presence of secondary pigments. Thus, we characterized T. minimum for growth and possible carotenoid production in different inorganic media. In a lab-scale photobioreactor, we confirmed that nitrogen starva-tion in combination with salt stress triggered a secondary carotenoid accumulation. The development of the pigment composition and the antioxidant capacity of the extracts was analyzed through-out the cultivations. The final secondary carotenoid composition was, on average, 61.1% astaxanthin and 38.9% adonixanthin. Moreover, the cells accumulated approx. 83.1% unsaturated fatty acids. This work presents the first report of the formation of secondary carotenoids within the family Hy-drodictyaceae (Sphaeropleales, Chlorophyta).

OriginalspracheEnglisch
Aufsatznummer107
Seiten (von - bis)1-14
Seitenumfang14
FachzeitschriftLife
Jahrgang11
Ausgabenummer2
DOIs
PublikationsstatusVeröffentlicht - Feb. 2021

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