Woronin body

From Palaeos

Woronin bodies are highly refractive, electron dense, membrane bound particles found on either side of septa that divide hyphal compartments in filamentous fungi. One current theory is that Woronin bodies are peroxisomes that function to maintain cellular integrity. The septa that separate hyphal compartments are pierced by pores which allow most cytoplasmic constituents (but not nuclei) to travel freely between hyphae. However, if an adjoining hypha is ruptured, the Woronin bodies block the pore to prevent loss of cytoplasm into the ruptured compartment.

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