Fig. 1: Micrographs of the diatom host (Synedra) and fungal microparasite (chytrid Zygophlyctis) at different infection stages.
From: Fungal parasitism on diatoms alters formation and bio–physical properties of sinking aggregates
a Non-infected (non-inf) healthy diatom cells. b Infected diatom with encysted zoospore (encyst, early-infected), which developed into a c mature sporangium (mat sp, maturely-infected) with new zoospores inside. The zoospores are eventually discharged into the ambient water, leaving behind an empty transparent sporangium (empty sp, post-infected) on a non-viable host cell (d). Shown are brightfield and epifluorescence (Fluorescence) images. Sporangia are displayed in blue (stained with Calcofluor White) and diatom chloroplasts in red (chlorophyll autofluorescence). Scale bar is 20 µm (applies to all panels).
