View changelog
| Phylum | Subphylum | Class | Subclass | Order | Family | Genus | Species | Anamorph |
|---|---|---|---|---|---|---|---|---|
| Basidiomycota | Ustilaginomycotina | Ustilaginomycetes | Ustilaginomycetidae | Ustilaginales | Ustilaginaceae | Ustilago | maydis |
| Authority | (Pers.) Fuckel |
|---|
Nuclear Division
Cell type: (ME) meiosis
Component: Nuc Div / SPB
| Characteristic | State | Code | Images |
|---|---|---|---|
| Centriole | absent | 0 | |
| Basic organization of the spindle pole | spindle pole body globular | 4 |  |
| Spindle pole body form, interphase-prophase | a subgloboid with internalized layer convex with respect to the spindle | 7 | |
| Spindle pole body form, metaphase-anaphase | a subgloboid with internalized layer convex with respect to the spindle and directly connected to spindle (Tilletia/Ustilago) | a | |
| Metaphase nuclear envelope | partially dispersed | 3 | |
| Perinuclear endoplasmic reticulum | absent | 0 | |
| Central spindle | present | 1 | |
| Metaphase plate | absent | 0 | |
| Spindle pole body cap | fragments of a discontinuous membrane that do not form a true cap | 3 | |
| Interphase chromatin condensation | absent | 0 | |
| Nucleolus behavior | nucleolus or part of it is more persistent and is discarded after metaphase | 2 | |
| Sources | |
|---|---|
| Character Quality | good |
| Fixation | gluteraldehyde with osmium postfix |
| Study Complete | no |
| Author | O\'Donnell, K.L. and McLaughlin, D.J. |
| Date | 1984a, b |
| Source | Mycologia 76: 468-502 |
Septum / Pore Cap
 |
Septum in a vegetative hypha of Ustilago maydis. |
Cell type: (BC) basidiocarp
Component: Basidium/basidiocarp
| Characteristic | State | Code | Images |
|---|---|---|---|
| Primary septum within basidium | septal pore with swellings | 3 | |
| Septal pore cap at primary septum within basidium | absent | 0 | |
| Sources | |
|---|---|
| Notes | Pore is closed by a membrane; evidence that pore is open is lacking. Imperforate secondary basidial septa, and pored primary and secondary sterigma septa are present. |
| Character Quality | Good |
| Fixation | glutaraldehyde; postfixed in osmium |
| Study Complete | No |
| Author | O\'Donell, K. L., and McLaughlin, D.J. |
| Date | 1984 |
| Source | Mycologia 76: 486-502 |
| Other Sources | Ramberg, J.E., and McLaughlin, D. J. Can. J. Bot. 58: 1548-1561, 1980 |
| Herbarium | MIN |
| Collector | K. L. O\'Donnell and D.J. McLaughlin |
| Collector no. | DJM 177 |
| Substrate | On Zea mays |
| Source of character | Teliospores |