Cytoplasmic streaming
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2008-06-16T16:17:38Z
Empco
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'''Cytoplasmic streaming''' is the flowing of [[cytoplasm]] in [[eukaryotic cells]]. This occurs in both [[plant]] and [[animal]] cells. It creates cytoplasmic reorganization during cell reproduction. In some unicellular [[eukaryotes]], such as [[amoeba]], it provides the mechanism for cell locomotion. It aids in the delivery of nutrients, metabolites, and genetic information to all parts of larger [[plant]] [[cell (biology)|cell]]s. It vigorously "stirs" these components about the cytoplasm, allowing them to flow to all parts of the cell. As membrane-bound [[organelle]]s crawl along the inner [[cell wall]] they set the cytoplasm into motion. This streaming allows other [[organelle]]s and nutrients to flow in the stream created. Actin filaments play a role in streaming.
''Cyclosis'' is the circulation or streaming of the [[cytoplasm]] within some living [[Cell (biology)|cell]]s. In plant cells, [[chloroplast]]s may be moved around with the stream. The rate of motion is usually affected by light exposure, [[temperature]], and [[pH]] levels.
The flow of cytoplasm may be stopped by:
*Adding [[Lugol's iodine solution]]
*Adding [[Cytochalasin D]] (dissolved in [[dimethyl sulfoxide]])
==Chloroplasts==
[[Chloroplasts]] make use of cytoplasmic streaming to move to optimum position within the cell for maximum light absorption used in [[photosynthesis]].
==See also==
* [[Cytoplasm]]
* [[Plant cell]]
==References==
*[http://www.britannica.com/eb/article-9028448 Britannica]
*[http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=ce2.section.448 Establishment of Polarity in the One-Cell Embryo]
*[http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=mcb.figgrp.5242 Cytoplasmic streaming in cylindrical giant algae.]
*[http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=mcb.section.5230#5241 Actin and Myosin in Nonmuscle Cells]
==External links==
* [http://www.pearson-college.uwc.ca/pearson/biology/cyclosis.htm Measurement of Cyclosis in Elodea]
* [http://www.microscopy-uk.net/mag/artnov00/dwelodea.html Video of Cyclosis in Canadian Pondweed]
* [http://www.dailymotion.com/video/x492em_cellules-de-chlorophile_tech Video of Cyclosis (Elodea)].
{{Cell-biology-stub}}
[[Category: Cellular processes]]
[[bn:সাইটোপ্লাজমীয় প্রবাহ]]
[[es:Ciclosis]]
[[fr:Cyclose]]
[[pt:Ciclose]]