Fig. 2From: Modulation of the balance of fatty acid production and secretion is crucial for enhancement of growth and productivity of the engineered mutant of the cyanobacterium Synechococcus elongatus Effects of light intensity and nitrogen source on growth and FFA production. a Growth and FFA production of dAS1T. Cells grown in nitrate-containing medium under low light (50 μE m−2 s−1) were harvested and transferred to nitrate or ammonium-containing medium at t = 0 and incubated under high light (180 μE m−2 s−1) or low light (50 μE m−2 s−1). Solid lines optical density at 730 nm (OD730); dotted lines FFA concentrations in medium. Closed circles cells grown in nitrate-containing medium under low light (n = 3); Open circles cells grown in nitrate-containing medium under high light (n = 6); Open triangles cells grown in ammonium-containing medium under high light (n = 3). Data shown are the mean ± SE from the biological replicates. b Appearance of the cultures at t = 240 h, showing the growth defect of dAS1T in nitrate-containing medium under high light after prolonged cultivationBack to article page