Fig. 5 | Communications Biology

Fig. 5

From: Colonies of marine cyanobacteria Trichodesmium interact with associated bacteria to acquire iron from dust

Fig. 5

Localized Fe uptake within the core of individual Trichodesmium colonies incubated with 55ferrihydrite. Overlay of microscopic images and 55Fe radio-images of natural Trichodesmium colonies that were incubated for 24 h with 55ferrihydrite. The images show that only the cells in the colony core internalized 55Fe over this time (and hence are colored), hinting at the importance of the confined microenvironment is assisting 55ferrihydrite dissolution and uptake. The extracellular adsorbed 55Fe was removed by a Ti-EDTA-Citrate wash. Scale bar = 500 µm

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