Dolipore septum

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hyphae of basidiomycete fungi, parenthesomes (1) "cap" a dolipore septum (2). The cell wall (3) swells around the septal pore to form a barrel-shaped ring. Perforations in the parenthesome allow cytoplasm
to flow between (4) and (5).

Dolipore septa are specialized

parenthesis-like appearance under a microscope) or simply "pore caps".[2][3]

Dolipore septa vary significantly between monokaryotic and

mitochondria, to flow through their pores;[2][3] those in monokaryotic hyphae have perforated parenthesomes, which allow cell nuclei to flow through as well.[4]

The structure was first described by Royall Moore and James McAlear in 1962.[5]

References