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The cytoskeleton in plant cell growth: lessons from root hairs
Author(s) -
Ketelaar Tijs,
Emons Anne Mie C.
Publication year - 2001
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1046/j.0028-646x.2001.00278.x
Subject(s) - root hair , cytoskeleton , cytoplasm , microtubule , microbiology and biotechnology , biology , plant cell , actin , tip growth , actin cytoskeleton , botany , cytoplasmic streaming , biophysics , cell , biochemistry , pollen , pollination , gene , pollen tube
Summary In this review, we compare expansion of intercalary growing cells, in which growth takes place over a large surface, and root hairs, where expansion occurs at the tip only. Research that pinpoints the role of the cytoskeleton and the cytoplasmic free calcium in both root hairs and intercalary growing cells is reviewed. From the results of that research, we suggest experiments to be carried out on intercalary growing cells to test our hypotheses on plant cell expansion. Our main hypothesis is that instability of the cortical actin cytoskeleton determines the location where expansion takes place and the amount of expansion.ContentsSummary 409 I. How do plant cells expand their surface? 409 II. Immunolocalization of epitopes in fixed root hairs for light‐microscopy 410 III. The cytoskeleton in growing root hairs 4121. Microtubules 4122. Actin filaments 4133. Free cytoplasmic calcium concentration 413 IV. The role of cytoskeletal elements and cytoplasmic free alcium in intercalary expanding root cells 4141. Microtubules 4142. Actin filaments 4153. Free cytoplasmic calcium concentration 416Acknowledgements 416References 416