A "MICROTUBULE" IN PLANT CELL FINE STRUCTURE
نویسندگان
چکیده
منابع مشابه
A "microtubule" in Plant Cell Fine Structure
This paper reports an electron microscope examination of the cortices of some plant cells engaged in wall formation. Previous studies of similar material fixed in OSO(4) alone have disclosed discontinuities in the plasma membrane and other evidence of inadequate fixation. After glutaraldehyde, used as a fixative in this present study, the general preservation of cortical fine structure is great...
متن کاملMicrotubule Fine Structure
Recent studies have demonstrated the widespread occurrence of microtubules in the cytoplasm of both animal and plant cells (e.g., Burgos and Fawcett, 1955; Manton , 1959; Slautterback, 1963; Ledbetter and Porter, 1963). The microtubules have usually been examined in sectioned material after osmium tetroxide or glutaraldehyde fixation. Because of advantages in the negative staining technique, it...
متن کاملFine Structure of Negatively Stained Plant Mitochondria
Recently investigators have reported knob-like particles on mitochondrial membranes isolated from different organisms (1, 2, 4, 5). This report presents observations on the structure of plant mitochondria, negatively stained with phospho-tungstic acid, which show knob-like projections on the membranes. MATERIALS AND METHODS Castor beans (Ricinus communis) were soaked for 24 hours in distilled w...
متن کاملMicrotubule Components of the Plant Cell Cytoskeleton.
Like the skeleton of any vertebrate animal, the cytoskeleton plays a major role in detennining the three-dimensional form of a cell. However, in plants the cytoskeleton is probably more analogous to a scaffold, being directly involved in the establishment of cell morphology and less involved in the maintenance of cell shape once the relatively rigid cell walls are in place. The term "skeleton" ...
متن کاملStructure of cortical microtubule arrays in plant cells
Serial sectioning was used to track the position and measure the lengths of cortical microtubules in glutaraldehyde-osmium tetroxide-fixed root tip cells. Microtubules lying against the longitudinal walls during interphase, those overlying developing xylem thickenings, and those in pre-prophase bands are oriented circumferentially but on average are only about one-eighth of the cell circumferen...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1963
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.19.1.239