Molecular Soil Biology 2026, Vol.17, No.1, 1-11 http://bioscipublisher.com/index.php/msb 7 does not directly constitute biomass (e.g., proteins or nucleic acids), nor does it directly drive photosynthetic electron transport like iron. Its role is to provide “support” and “stability” within the cell (Thomas et al., 2023), and a stable intracellular environment is a prerequisite for efficient metabolic activities, including protein, lipid, and carbohydrate synthesis. The results of this study are consistent with previous reports highlighting the growth-promoting effects of iron on microalgae. Figure 7 Changes in Pigment Content of Microalga SA-2 Note: (a) Total pigment content of microalgae SA-2 under different EDTA-Ca concentrations; (b) Total pigment content of microalgae SA-2 under different EDTA-Fe concentrations; (c) Chlorophyll a content of microalgae SA-2 under different EDTA-Ca concentrations; (d) Chlorophyll a content of microalgae SA-2 under different EDTA-Fe concentrations; (e) Chlorophyll b content of microalgae SA-2 under different EDTA-Ca concentrations; (f) Chlorophyll b content of microalgae SA-2 under different EDTA-Fe concentrations; (g) Carotenoid content of microalgae SA-2 under different EDTA-Ca concentrations; (h) Carotenoid content of microalgae SA-2 under different EDTA-Fe concentrations. Different lowercase letters indicate a significant difference (P<0.05)
RkJQdWJsaXNoZXIy MjQ4ODYzNA==