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Cell structure - Plastids - Chloroplasts - Chloroplast movement - Moss (Funaria, Funariaceae)
Chloroplast - Moss (Funaria, Funariaceae)
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| Description |
In the moss Funaria bright unpolarized light, which is falling directly on the leaf, causes the chloroplasts to move towards the anticlinal cell walls, where they receive less light. The movement is shown at the 200 fold time lapse. If the bright lieght is polarized at the right angle to the longitudinal axis of the cell, the chloroplasts move to the anticlinal longitudinal walls. The chloroplasts move to those walls which are oriented at the right angle to the plane of polarization of the incident light. If the plane of polarization is parallel to the longitudinal walls, the chloroplasts migrate to the transverse anticlinal walls. There is insufficient space to accomodate all of the chloroplasts. if the cells are turned by 90 degrees to the plane of polarization, the chloroplasts which have not yet reacted, now move to the longitudinal walls. Later, those chloroplasts which had originally moved to the tranverse walls, move away, reacting again to the new angle of polarized light.
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Sources
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Chloroplast Movement to Polarized Light of High Intensity - Funaria. Hard, Trude (Göttingen). Heunert, Hans-Henning (Göttingen). Publ.: 1981. Film, 16 mm, 26 m ; F, 2 1/2 min ; stumm
IWF, Göttingen: K 124
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Abbreviations
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Order |
For further films please search the IWF media catalogue for "cell biology".
Order no.:
- title currently not available -
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