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Bioresources and Bioprocessing
Fig. 1 | Bioresources and Bioprocessing

Fig. 1

From: Physiological and transcriptome analysis elucidates the metabolic mechanism of versatile Porphyridium purpureum under nitrogen deprivation for exopolysaccharides accumulation

Fig. 1

Growth characteristics, photosystem parameters and morphological changes of P. purpureum under normal and nitrogen-deficient conditions. a Growth curves and color changes of P. purpureum under normal and nitrogen-deficient conditions, and individual cell status under optical microscope at day 20. b Spider-plot presentation of selected parameters quantifying the behavior of PS II of P. purpureum cells exposed for 20 days to nitrogen stress. c Scanning electron microscope and transmission electron microscope images of normal and nitrogen-deficient cells on day 12. ND means nitrogen deprivation. Data are expressed as mean  ±  SD (n  =  3)

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