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. 2017 Aug 4;5(3):45. doi: 10.3390/microorganisms5030045

Figure 8.

Figure 8

Comparison of both dark respiration and photosynthesis in A. circinalis strains CS534, CS537 and CS541 growing in batch culture exposed at the optimum light for growth. (A) dark respiration (Rd); (B) maximum photosynthetic rates (Pmax); (C) light harvesting efficiency (α); (D) relative electron transport rate (rETRmax); (E) light saturation parameter (Ik). Samples were taken at exponential phase (day 5). Error bars represent standard deviation of three replicates. Different letters above the bars indicate means that are significantly different at p < 0.05).