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Cell structure - Cytoskeleton - Actin - Subcortical Fibrils - Alga Nitella
Subcortical Fibrils - Alga Nitella
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| Description |
In Nitella the chloroplasts are located in the stationary subcortical protoplasm. At the boundary between the subcortical and the streaming inner protoplasm are subcortical fibrils [1], seen here with the aid of a scanning microscope [2].
Isolated droplets of protoplasm from internodial cells of Nitella show movement: groups of chloroplasts rotate. Nearby are rotating bundles of filaments, which consist of actin and frequently assume a polygonal shape [1].
With video enhanced microscopy subcortical fibrils in rhizoids can also be visualized. They consist of F-actin. Particles are transported either along the fibrils or in their immediate vicinity [3].
Duration: 00:49 min
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Sources
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Where there is Life, there is Motion - Function of Microtubules. Tokyo Cinema Inc. and Shimonaka Memorial Foundation, Encyclopaedia Cinematographica Japan Archives, OKADA, Kazuo, Tokyo. Col., com. engl., 270 m, 241/2 min. [1] DIC; [2] REM.
IWF, Göttingen: W 1975
Nitella. STROEMGRAN-ALLEN, N. Winston-Salem. N.C. USA. [3] Video enhanced DIC.
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Abbreviations
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Order |
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