Nutrient stored inside Dunaliella salina cells prevents beta-carotene accumulation under its medium deficiency

Abstract

At alternating cultivation cycles under deficiencies of nitrogen or phosphorus D. salina culture grew limitedly at the first cultivation, then intense after transferring the culture. Cellular beta-carotene accumulated during the first cultivation, and then almost did not. D. salina cells are able to accumulate the available nutrient at the other nutrient deficiency and to spend the intracellular nutrient reserve for culture growth when the other nutrient re-supplied to the medium.