Assembling the Fungal Tree of Life

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Septum / Pore Cap


Location code / cell type
  • 1N, haploid mycelium
  • NN, dikaryotic mycelium
  • 2N, diploid mycelium
  • XN, mycelium of unknown nuclear status
  • MN, multinucleate
  • AC, ascocarp -- nonascogenous hyphae or ascospore
  • AS, asexual spore
  • BC, basidiocarp
  • RS, junction of rhizoid and sporangium
  • SC, sporocarp
  • SF, sporangiophore
  • ZF, zygophore
  • BC, basidiocarp
  • AH, ascogenous hypha/ascus
  • AH, ascogenous hypha/ascus
  • Hypha excluding ascogenous hypha/ascus
    • 1. Uniperforate septa
      • 0, absent, walled off pore, or apparently walled off pore
      • 1, a single central pore
    • 2. Uniperforate septal pore margin
      • 0, uniperforate septal pore absent
      • 1, unelaborated margin
      • 2, uniperforate septal pore absent but with some type of discontinuity within the septum, e.g., disruption of central layer of cross wall, wall swelling, and/or deposits within cross wall, suggestive of a blocked or disrupted pore
      • 3, septal pore swelling
      • 4, with lenticular cavity (bifurcate)
    • 3. Protruding non-membrane-bound bodies associated with septal pore(s)
      • 0, absent
      • 1, present
    • 4. Membrane-bound bodies associated with septal pore(s)
      • 0, absent
      • 1, Woronin bodies
      • 2, microbodies
      • 3, atractosomes
    • 5. Membranous structures associated with septal pore(s)
      • 0, absent
      • 1, septal pore cap
      • 2, endoplasmic reticulum not associated with plasmodesmata
      • 3, endoplasmic reticulum associated with plasmodesmata
    • 6. Non-membrane-bound, electron-dense bodies associated with septal pore(s)
      • 0, absent
      • 1, present
    • 7. Septal pore occlusion
      • 0, absent
      • 1, pulley wheel-shaped occlusion (Pucciniales type)
      • 2, thin non-membranous, non-continuous electron-dense material associated with septal swellings (Agaricomycotina)
      • 3, membranous plates continuous with plasma membrane (Tilletia)
      • 4, thickened non-membranous plate (flattened disc, biumbonate, or irregular)
      • 5, granular lamellate structure (Pezizales)
      • 6, subspherical occlusion, non-membrane-bound, starting as translucent finger-like extensions from the pore margin which matures into a multilayered plate surrounded by amorphous material
      • 7, subspherical occlusion, non-membrane-bound, lacking translucent finger-like extensions or plates (Sclerotinia)
      • 8, non-lamellate convex to somewhat flattened dense non-membranous occluding material (Orbiliales)
    • 8. Organelle trafficking
      • 0, organelle trafficking absent
      • 1, mitochondria
      • 2, nuclei
      • 3, ribosomes/small particles or organelles
    • 9. Woronin body type
      • 0, Woronin bodies absent
      • 1, globose
      • 2, hexagonal
      • 3, rectangular/cylindrical
    • 10. Septal pore cap basic structure
      • 0, pore cap absent
      • 1, elaborated cap with abseptal or adseptal extensions (cupulate, reticulate, or tubular extensions)
      • 2, simple cap (cap with unelaborated abseptal surface)
    • 11. Detailed structure of elaborated septal pore cap
      • 0, elaborated cap absent
      • 1, abseptal extensions (smooth vesicular-tubular membranous structures)
      • 2, multiple saccules
      • 3, cap reticulate
      • 4, adseptal tubular extensions
    • 12. Detailed structure of simple septal pore cap
      • 0, simple cap absent
      • 1, cap imperforate, flat
      • 2, cap imperforate or uniperforate, curved
      • 3, cap multiperforate, small pores
      • 4, cap multiperforate, large pores
    • 13. Saccules of elaborated pore cap lined with external electron-dense layer
      • 0, absent
      • 1, present
    • 14. Substructure of pore cap
      • 0, absent
      • 1, cap with uniform electron-transparent contents
      • 2, cap with uniform electron-dense contents
      • 3, cap with three internal layers (central electron-dense layer between two less electron dense layers)
    • 15. Zone of organelle exclusion at pore
      • 0, absent
      • 1, present
    • 16. Pore cap enclosed by endoplasmic reticulum
      • 0, absent
      • 1, present, not continuous with pore cap
      • 2, present, and continuous with pore cap
    • 17. Multiperforate septum
      • 0, multiperforate septum absent
      • 1, simple pores in multiperforate septum with uniform pores not solely adjacent to hyphal wall
      • 2, simple pores in multiperforate septum with variable-sized, large pores adjacent to hyphal wall
      • 3, plasmodesmata
      • 4, thickened septum with central pore closed by plasmodesmata
    • 18. Desmotubules in plasmodesmata
      • 0, absent
      • 1, present
  • Basidium/basidiocarp
    • 19. Zone of exclusion outside septal pore cap in basidiomycete sporocarp
      • 0, absent
      • 1, zone of exclusion outside (abseptal) pore cap present
    • 20. Septal pore cap enclosed by endoplasmic reticulum in basidiomycete sporocarp
      • 0, absent
      • 1, present, not continuous with pore cap
      • 2, present, and continuous with pore cap
    • 21. Zone of exclusion in simple septum bordered by microbodies
      • 0, absent
      • 1, present
    • 22. Primary septum within basidium
      • 0, primary septum within basidium absent
      • 1, without pore
      • 2, walled off pore, or apparently walled off pore
      • 3, septal pore with swellings
      • 4, incomplete septa in basidial apex
    • 23. Septal pore cap at primary septum within basidium
      • 0, absent
      • 1, present
  • Ascogenous hypha/ascus, immature
    • 24. Immature septal pore
      • 0, absent
      • 1, simple with single central pore
    • 25. Immature septal pore associated structures
      • 0, pore associated structures absent
      • 1, endoplasmic reticulum associated with toroid occlusion
    • 26. Immature septal pore occlusion
      • 0, pore occlusion absent
      • 1, non-membranous [thin non-membranous plate(s) and/or occluding material]
      • 2, toroid occlusion, i.e., donut-like with central pore
      • 3, toroid occlusion containing pulley-wheel-shaped occlusion
      • 4, occlusion a convex or biconvex band or more complex hemisphere
    • 27. Immature pore occlusion detailed structure
      • 0, pore occlusion absent
      • 1, torus with radiating tubular cisternae
      • 2, torus lacking tubular cisternae
      • 3, electron-light lamellate torus and granular matrix
      • 4, hemispherical usually with narrow, electron-opaque inner and broad, electron-light outer bands
      • 5, hemispherical with radiating tubular elements
      • 6, cone to dumbell-shaped with V-shaped striations and usually an electron-light torus
      • 7, double, electron-light-banded torus in granular matrix becoming hemispherical with dense inner zone and less opaque outer zone
      • 8, electron opaque, convex or biconvex bands
      • 9, electron-opaque, hemispherical with short radiating tubular elements
  • Ascogenous hypha/ascus, mature
    • 28. Mature septal pore
      • 0, absent
      • 1, simple with single central pore
    • 29. Mature septal pore associated structures
      • 0, pore associated structures absent
      • 1, endoplasmic reticulum associated with toroid occlusion
      • 2, endoplasmic reticulum associated with pore cap membrane
    • 30. Mature septal pore occlusion
      • 0, pore occlusion absent
      • 1, toroid occlusion, i.e., donut-like with central pore
      • 2, subspherical pore cap membrane
      • 3, occlusion a convex or biconvex band or more complex hemisphere
    • 31. Mature pore occlusion detailed structure
      • 0, pore occlusion absent
      • 1, torus lacking tubular cisternae
      • 2, electron-light lamellate torus and granular matrix
      • 3, hemispherical usually with narrow, electron-opaque inner and broad, electron-light outer bands
      • 4, hemispherical with radiating tubular elements
      • 5, cone to dumbell-shaped with V-shaped striations and usually an electron-light torus
      • 6, double, electron-light-banded torus in granular matrix becoming hemispherical with dense inner zone and less opaque outer zone
      • 7, electron opaque, convex or biconvex bands
      • 8, electron-opaque, hemispherical with short radiating tubular elements
      • 9, simple membrane enclosing cytoplasm
      • a, torus with radiating tubular cisternae




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Character list


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