Fig. 2: Internal cell architecture of phytoplankton cells. | Nature Communications

Fig. 2: Internal cell architecture of phytoplankton cells.

From: Morphological bases of phytoplankton energy management and physiological responses unveiled by 3D subcellular imaging

Fig. 2: Internal cell architecture of phytoplankton cells.

a Sections through cellular 3D volumes, segmented from FIB-SEM images of whole cells of Micromonas (stack of frames in Supplementary Movie 1), Pelagomonas (Supplementary Movie 2), Nannochloropsis (Supplementary Movie 3), Galdieria (Supplementary Movie 4), Emiliania (Supplementary Movie 5), Phaeodactylum (Supplementary Movie 6) and Symbiodinium (Supplementary Movie 7). Sections are representatives micrographs of an experiment repeated three times with similar results Scale bar: 1 µm. b Segmentations highlight the main subcellular compartments: green: plastids (containing thylakoids and pyrenoids—light green—in some cell types); red: mitochondria; blue: nuclei (with different intensities of staining possibly corresponding to euchromatin—light blue—heterochromatin—blue and the nucleolus—dark blue); grey: other compartments. Segmentations are representatives tomograms of an experiment repeated three times with similar results. c Volume occupancy by the different subcellular compartments in different microalgal cells. Top plot: % of cell-volume occupation; bottom plot: absolute volume sizes. Data refer to three cells ± s.d. for every species.

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