ISSN:
0931-1890
Schlagwort(e):
Key words Cell division
;
Cytokinesis
;
Fusiform cells
;
Mitosis
;
Robinia pseudoacacia
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
,
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
Abstract The ultrastructure of periclinally dividing fusiform cells was studied in the vascular cambium of Robinia pseudoacacia. Fusiform cell division begins in April at Madison, Wisconsin, when the cambial cells still have many characteristics of a dormant cambium. Soon afterward, the cambial cells acquire the appearance typical of an active cambium. Sequential phases of the microtubule cycle were documented: cortical microtubules bordering the cell wall during interphase, perinuclear microtubules preceding formation of the mitotic spindle, spindle microtubules, and phragmoplast microtubules. A preprophase band of microtubules was not encountered. An extended phragmosome was not encountered in periclinally dividing fusiform cells. During cytokinesis, the phragmosome is represented by a broad cytoplasmic plate which precedes the developing phragmoplast and cell plate as they migrate toward the ends of the cell.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/PL00009668
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