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- W2077833903 endingPage "467" @default.
- W2077833903 startingPage "441" @default.
- W2077833903 abstract "Various methods have been used to study cytoplasmic streaming in giant algal cells during the past three decades. Simple techniques can be used with characean internodal cells to modify the cell constitution in various ways to gain insight into the mechanism of cytoplasmic streaming. Another method involves isolatingin vitro a huge drop of uninjured endoplasm, to examine its physical and dynamic properties. The motive force responsible for streaming has been measured by three different techniques with similar results. Subcortical fibrils consisting of bundles of F-actin with the same polarity are indispensable for streaming. Differential treatment of the endoplasm and ectoplasm has shown that putative characean myosin is localized in the endoplasm. Studies of the roles of ATP, Mg2+, Ca2+, H+ etc. in the streaming have been conducted by cellular perfusion, which allows removal of the tonoplast, or by techniques permeabilizing the protoplasmic membrane. A slow version of the movement can even be artificially reproduced by combining characean actinin situ and exogenous myosin in the presence of Mg-ATP. The findings thus far obtained support the hypothesis that cytoplasmic streaming in characean cells is caused by an active shearing force produced by interaction of the actin filament bundles on the cortex with myosin in the endoplasm." @default.
- W2077833903 created "2016-06-24" @default.
- W2077833903 creator A5015525814 @default.
- W2077833903 date "1986-12-01" @default.
- W2077833903 modified "2023-09-27" @default.
- W2077833903 title "Cytoplasmic streaming in giant algal cells: A historical survey of experimental approaches" @default.
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- W2077833903 doi "https://doi.org/10.1007/bf02488723" @default.
- W2077833903 hasPublicationYear "1986" @default.