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Bioresources and Bioprocessing
Fig. 3 | Bioresources and Bioprocessing

Fig. 3

From: Fine-tuned regulation of photosynthetic performance via γ-aminobutyric acid (GABA) supply coupled with high initial cell density culture for economic starch production in microalgae

Fig. 3

Effect of exogenous GABA supply on the specific energy fluxes per fully active PSII reaction centre (ABS/RC, a, b), relative variable fluorescence at the J-step (Vj, c, d) and I-step (Vi, e, f), and electron transport flux per RC (ET0/RC, g, h) in T. subcordiformis exposed to nitrogen deprivation under NICD (a, c, e, and g) and HICD (b, d, f, and h). *, **, and *** denote the significant differences at p < 0.1, p < 0.05, and p < 0.01 levels, respectively, under different GABA conditions (2.5–10 mM) compared to those under 0 mM GABA (means ± SD, n = 3)

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