Loading...
Please wait, while we are loading the content...
Similar Documents
Spindle and kinetochore morphology of Dictyostelium discoideum.
| Content Provider | Scilit |
|---|---|
| Author | Moens, P. B. |
| Copyright Year | 1976 |
| Description | The metaphase spindle of haploid Dictyostelium discoideum (n = 7) is 2 mum long. It consists of some 20 microtubules which seem continuous between the spindle pole bodies and there are about 20 chromosomal microtubules at each end of the spindle. During anaphase the central spindle elongates and the chromosomal microtubules shorten. The spindle length and structure at this stage suggests that lengthening is caused by elongation as well as parallel sliding of the nonchromosomal microtubules. The nuclear envelope remains mostly intact during mitosis, and nuclear separation through medial constriction takes place when the spindle is 6 mum long. Cytokinesis occurs when the spindle is 10 mum long. At that time the kinetochores double in size. During interphase, the spindle pole body separates from the nucleus to a distance of 0.7 mum, and it returns at the onset of the next prophase when it becomes functionally double, thereby starting the formation of a central spindle. When comparing mitosis in the cellular slime molds Polysphondylium violaceum and D. discoideum, several similarities and some differences are apparent. |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2109621/pdf http://jcb.rupress.org/content/68/1/113.full.pdf |
| Ending Page | 122 |
| Page Count | 10 |
| Starting Page | 113 |
| DOI | 10.1083/jcb.68.1.113 |
| Journal | Journal of Cell Biology |
| Issue Number | 1 |
| Volume Number | 68 |
| Language | English |
| Publisher | Rockefeller University Press |
| Publisher Date | 1976-01-01 |
| Access Restriction | Open |
| Subject Keyword | Developmental Biology Microtubules Myxomycetes Dictyostelium Discoideum Cell Division Journal: Journal of Cell Biology (Vol- 68, Issue- 1) |
| Content Type | Text |
