title: Growth, photosynthetic efficiency, and biochemical composition of Tetraselmis suecica F&M-M33 grown with LEDs of different colors.
abstract: The effect of light quality on cell size and cell cycle, growth rate, productivity, photosynthetic efficiency and biomass composition of the marine prasinophyte Tetraselmis suecica F&M-M33 grown in 2-L flat panel photobioreactors illuminated with light emitting diodes (LEDs) of different colors was investigated. Biomass productivity and photosynthetic efficiency were comparable between white and red light, while under blue and green light productivity decreased to less than half and photosynthetic efficiency to about one third. Differences in cell size and number correlated with the cell cycle phase. Under red light cells were smaller and more motile. Chlorophyll content was strongly reduced with red and enhanced with blue light, while carotenoids and gross biomass composition were not affected by light quality. The eicosapentaenoic acid content increased under red light. Red light can substitute white light without affecting productivity of T. suecica F&M-M33, leading to smaller and more motile cells and increased eicosapentaenoic acid content. Red LEDs can thus be profitably used for the production of this microalga for aquaculture.
authors.affiliation: Dipartimento di Scienze delle Produzioni Agroalimentari e dell'Ambiente-Sezione di Microbiologia Agraria, Università degli Studi di Firenze, Piazzale delle Cascine 24, 50144, Firenze, Italy.
authors.forename: Fabian
authors.initials: F
authors.lastname: Abiusi
authors.forename: Giacomo
authors.initials: G
authors.lastname: Sampietro
authors.forename: Giovanni
authors.initials: G
authors.lastname: Marturano
authors.forename: Natascia
authors.initials: N
authors.lastname: Biondi
authors.forename: Liliana
authors.initials: L
authors.lastname: Rodolfi
authors.forename: Massimo
authors.initials: M
authors.lastname: D'Ottavio
authors.forename: Mario R
authors.initials: MR
authors.lastname: Tredici
mesh_terms: D000704:Analysis of Variance; D018533:Biomass; D000460:Chlorophyta / Q000737:chemistry / Q000254:growth & development / Q000502:physiology / Q000528:radiation effects; D003116:Color; D015118:Eicosapentaenoic Acid; D058433:Photobioreactors; D010788:Photosynthesis / Q000502:physiology*
chemical_list: D015118:Eicosapentaenoic Acid
keywords: LED; Tetraselmis; eicosapentaenoic acid; photobioreactor; photosynthetic efficiency; red light