View changelog
| Phylum | Subphylum | Class | Subclass | Order | Family | Genus | Species | Anamorph |
|---|---|---|---|---|---|---|---|---|
| Basidiomycota | Agaricomycotina | Agaricomycetes | Auriculariales | Auriculariaceae | Exidia | crenata |
| Authority | (Schwein.) Fr. |
|---|---|
| Note | The 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of the material (using molecular techniques) used for study prove that the fungus is Exidia crenata (Greg Thorn, unpublished).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
| Characteristic | State | Code | Images |
|---|---|---|---|
| Centriole | absent | 0 | |
| Spindle pole body form, interphase-prophase | a globoid | 5 |  |
| 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 | |
| Metaphase nuclear envelope | partially dispersed | 3 | |
| Perinuclear endoplasmic reticulum | absent | 0 | |
| Central spindle | present | 1 | |
| Metaphase plate | absent | 0 | |
| Spindle pole body cap | absent | 0 | |
| Interphase chromatin condensation | absent | 0 | |
| Nucleolus behavior | nucleolus or part of it is more persistent and is discarded after metaphase | 2 | |
| Transient intranuclear element at late interphase-prophase | present within nucleus opposite the extranuclear spindle pole body | 1 | |
| Sources | |
|---|---|
| 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
 |
Septum from dikaryotic vegetative hypha |
 |
Septum from dikaryotic vegetative hypha |
Cell type: (NN) dikaryotic mycelium
Component: Hypha excluding ascogenous hypha/ascus
| Characteristic | State | Code | Images |
|---|---|---|---|
| Uniperforate septa | a single central pore | 1 | |
| Uniperforate septal pore margin | septal pore swelling | 3 | |
| Protruding non-membrane-bound bodies associated with septal pore(s) | absent | 0 | |
| Membrane-bound bodies associated with septal pore(s) | absent | 0 | |
| Membranous structures associated with septal pore(s) | septal pore cap | 1 | |
| Non-membrane-bound, electron-dense bodies associated with septal pore(s) | absent | 0 | |
| Septal pore occlusion | thin non-membranous, non-continuous electron-dense material associated with septal swellings (Agaricomycotina) | 2 | |
| Organelle trafficking | organelle trafficking absent | 0 | |
| Woronin body type | Woronin bodies absent | 0 | |
| Septal pore cap basic structure | simple cap (cap with unelaborated abseptal surface) | 2 | |
| Detailed structure of elaborated septal pore cap | elaborated cap absent | 0 | |
| Detailed structure of simple septal pore cap | cap imperforate or uniperforate, curved | 2 | |
| 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 | |
| Zone of organelle exclusion at pore | absent | 0 | |
| Pore cap enclosed by endoplasmic reticulum | absent | 0 | |
| Multiperforate septum | multiperforate septum absent | 0 | |
| Sources | |
|---|---|
| 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 |