A physical perspective on cytoplasmic streaming
نویسندگان
چکیده
منابع مشابه
A physical perspective on cytoplasmic streaming
Organisms show a remarkable range of sizes, yet the dimensions of a single cell rarely exceed 100 µm. While the physical and biological origins of this constraint remain poorly understood, exceptions to this rule give valuable insights. A well-known counterexample is the aquatic plant Chara, whose cells can exceed 10 cm in length and 1 mm in diameter. Two spiralling bands of molecular motors at...
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INTRODUCTION ........................................................................................................ 206 SHUTI’LE STREAMING IN THE MYXOMYCETE PLASMODIUM ................ 207 General ...................................................................................................................... 207 Contractile Properties of the Plasmodial Strand ..............................
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Cytoplasmic streaming in characean algae is thought to be generated by interaction between subcortical actin bundles and endoplasmic myosin . Most of the existing evidence supporting this hypothesis is of a structural rather than functional nature . To obtain evidence bearing on the possible function of actin and myosin in streaming, we used perfusion techniques to introduce a number of contrac...
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Plant cells are surrounded by a cell wall composed of polysaccharides and hence can change neither their form nor their position. However, active movement of organelles (cytoplasmic streaming or protoplasmic streaming) is observed in plant cells, and involvement of the actin/myosin system in these processes has been suggested. Successful biochemical and biophysical approaches to studying myosin...
متن کاملCellular Subcompartments through Cytoplasmic Streaming.
Cytoplasmic streaming occurs in diverse cell types, where it generally serves a transport function. Here, we examine streaming in multicellular fungal hyphae and identify an additional function wherein regimented streaming forms distinct cytoplasmic subcompartments. In the hypha, cytoplasm flows directionally from cell to cell through septal pores. Using live-cell imaging and computer simulatio...
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ژورنال
عنوان ژورنال: Interface Focus
سال: 2015
ISSN: 2042-8898,2042-8901
DOI: 10.1098/rsfs.2015.0030