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cyclosis

cyclosis (sīklō´sĬs), streaming of cytoplasm within a living cell without deformation of the external cell membrane. In some plant cells there is a rapid rotatory cytoplasmic movement, which is limited to the peripheral parts of the cell next to the cell wall; chloroplasts and granules move in this stream. This movement may be increased by light, and is dependent on temperature and pH. Auxins, or growth hormones, may also increase the rate of movement. Specialized cell components, microtubules, may direct the flow or may serve as a framework upon which the streaming occurs. Examples of cells in which cyclosis can be seen are the leaf cells of small aquatic plants, such as Elodea, and root hair cells of many plants. In some protozoans, e.g., the ciliates, slower cyclotic movements transport digestive vacuoles through the cell body.

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"cyclosis." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

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"cyclosis." The Columbia Encyclopedia, 6th ed.. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/cyclosis

cyclosis

cyclosis A type of cytoplasmic streaming in which the organelles circulate within the cell cytoplasm (e.g. in the passage of food vacuoles in Ciliatea).

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"cyclosis." A Dictionary of Zoology. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

"cyclosis." A Dictionary of Zoology. . Encyclopedia.com. (July 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/cyclosis-0

"cyclosis." A Dictionary of Zoology. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/cyclosis-0

cyclosis

cyclosis The circulation of protoplasm within a cell; the protoplasm moves at about 1–5cm/h. See also CYTOPLASMIC STREAMING.

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"cyclosis." A Dictionary of Plant Sciences. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

"cyclosis." A Dictionary of Plant Sciences. . Encyclopedia.com. (July 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/cyclosis

"cyclosis." A Dictionary of Plant Sciences. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/cyclosis