Assembling the Fungal Tree of Life

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Phylum Subphylum Class Subclass Order Family Genus Species Anamorph
Basidiomycota Agaricomycotina Agaricomycetes Auriculariales Auriculariaceae Exidia crenata
Authority(Schwein.) Fr.
NoteThe strain from which the ultrastructural data was generated was initially identified as Auricularia auricula-judae (as given in the publications cited below). However, a re-examination of the material (using molecular techniques) used for study prove that the fungus is Exidia crenata (Greg Thorn, unpublished).

Nuclear Division

Cell type: (MI) mitosis

Component: Nuc Div / SPB

Centriole absent 0  
Spindle pole body form, interphase-prophase a globoid 5 Images
Spindle pole body form, metaphase-anaphase an ellipsoid that expands by more than 100% of its interphase-prophase size directly connected to spindle (Auricularia) 6 Images
Metaphase nuclear envelope partially dispersed 3 Images
Perinuclear endoplasmic reticulum absent 0  
Central spindle present 1 Images
Metaphase plate absent 0 Images
Spindle pole body cap absent 0 Images
Interphase chromatin condensation absent 0  
Nucleolus behavior nucleolus or part of it is more persistent and is discarded after metaphase 2 Images
Transient intranuclear element at late interphase-prophase present within nucleus opposite the extranuclear spindle pole body 1 Images
Character Quality high
Fixation freeze-substitution
Study Complete no
Author Lu, H. and McLaughlin, D.J.
Date 1995
Source Can. J. Bot. 73: 315-332

Septum / Pore Cap

Auricularia_auricula-judae_1225_06bf33a702a96a9193b4dc1c50489458445cc5ed Septum from dikaryotic vegetative hypha
Auricularia_auricula-judae_1226_3126478c9744d0e9ed42d2a77696f1e96556b952 Septum from dikaryotic vegetative hypha

Cell type: (NN) dikaryotic mycelium

Component: Hypha excluding ascogenous hypha/ascus

Uniperforate septa a single central pore 1 Images
Uniperforate septal pore margin septal pore swelling 3 Images
Protruding non-membrane-bound bodies associated with septal pore(s) absent 0 Images
Membrane-bound bodies associated with septal pore(s) absent 0 Images
Membranous structures associated with septal pore(s) septal pore cap 1 Images
Non-membrane-bound, electron-dense bodies associated with septal pore(s) absent 0 Images
Septal pore occlusion thin non-membranous, non-continuous electron-dense material associated with septal swellings (Agaricomycotina) 2  
Organelle trafficking organelle trafficking absent 0 Images
Woronin body type Woronin bodies absent 0 Images
Septal pore cap basic structure simple cap (cap with unelaborated abseptal surface) 2 Images
Detailed structure of elaborated septal pore cap elaborated cap absent 0 Images
Detailed structure of simple septal pore cap cap imperforate or uniperforate, curved 2 Images
Saccules of elaborated pore cap lined with external electron-dense layer absent 0  
Substructure of pore cap cap with three internal layers (central electron-dense layer between two less electron dense layers) 3 Images
Zone of organelle exclusion at pore absent 0 Images
Pore cap enclosed by endoplasmic reticulum absent 0 Images
Multiperforate septum multiperforate septum absent 0 Images
Notes Filaments of two types: fine, and 7.6-9.4 nm diam.
Character Quality High
Fixation freeze-substitution
Study Complete Yes
Author L?, H.S. and McLaughlin, D.J.
Date 1991
Source Mycologia 83: 322-334
Collector G.J. Wong
Source of character GJ Wong 855; from crosses of isolates 4 & 6; collected Eno River State Park, Orange Co. NJ
Voucher Notes GJ Wong 855; from crosses of isolates 4 & 6; collected Eno River State Park, Orange Co. NJ

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