Growth, morphology and photosynthetic responses of Neochloris oleoabundans during cultivation in a mixotrophic brackish medium and subsequent starvation

• Autorzy: Baldisserotto C. , Giovanardi M. , Ferroni L. , Pancaldi S.
• Języki publikacji: EN

Abstrakty

EN

The green microalga Neochloris oleoabundans is able to grow in both low and high salinity media and is largely studied for its capability to accumulate lipids under starvation. Moreover, N. oleoabundans is a mixotrophic alga, and then organic carbon addition can promote its growth. This research aims to study the morpho-physiological aspects, with a particular attention on the photosynthetic response, both during mixotrophic growth and starvation in brackish media, more sustainable than freshwater cultivation. In the first step, the alga was cultivated mixotrophically in a brackish medium added with an apple waste product; in the second one, cells were starved also to verify lipid induction. Results indicate that growth is highly promoted during the first week of mixotrophic cultivation, while photosynthetic pigments and lipids are over-produced during the following three weeks of cultivation. In parallel, in mixotrophic cultures the maximum PSII quantum yield was enhanced during the exponential phase of growth. Interesting changes affected the mixotrophic cultures with respect to the partitioning of absorbed light energy. Starvation of both 7-day-grown mixotrophic and autotrophic cultures caused growth inhibition, pigments and photosynthesis downshifting, and concomitantly promoted evident lipid synthesis.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2014
• Tom: 36
• Numer: 02
• Opis fizyczny: p.461-472,fig.,ref.

Twórcy

autor

Baldisserotto C.

• Department of Life Sciences and Biotechnologies, University of Ferrara, Corso Ercole I d'Este 32, 44121, Ferrara, Italy

autor

Giovanardi M.

• Department of Life Sciences and Biotechnologies, University of Ferrara, Corso Ercole I d'Este 32, 44121, Ferrara, Italy

autor

Ferroni L.

• Department of Life Sciences and Biotechnologies, University of Ferrara, Corso Ercole I d'Este 32, 44121, Ferrara, Italy

autor

Pancaldi S.

• Department of Life Sciences and Biotechnologies, University of Ferrara, Corso Ercole I d'Este 32, 44121, Ferrara, Italy

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Identyfikatory

DOI

10.1007/s11738-013-1426-3