Contemplating the plasmalemmal control center model+

SummaryAn abundant epidermal mechanosensory calcium-selective ion channel appears able not only to detect mechanical stimuli such as those that initiate gravitropism but also to detect thermal, electrical, and various chemical stimuli. Because it responds to multimodal input with a second messenger output, this channel system seems likely to be an integrator that can engage in feedbacks with many other systems of the cell — and feedback is the hallmark of regulation. In general, the mechanical tension required for channel activation is likely transmitted from the relatively rigid cell wall to the plasma membrane system via linkage or adhesion sites that display antigenicities recognized by antibodies to animal β-1 integrin, vitronectin, and fibronectin and which have mechanical connections to the cytoskeleton. Thus, functionally, leverage exerted against any given adhesion site will tend to control channels within a surrounding domain. Reactions initiated by passage of calcium ions through the channels could presumably be more effectively regulated if channels within the domains were somewhat clustered and if appropriate receptors, kinases, porters, pumps, and some key cytoskeletal anchoring sites were in turn clustered about them. Accumulating evidence suggests not only that activity of clusters of channels may contribute to control of cytoskeletal architecture and of regulatory protein function within their domain, but also that both a variety of regulatory proteins and components of the cortical cytoskeleton may contribute to control of channel activity. The emerging capabilities of electronic optical microscopy are well suited for resolving the spatial distributions of many of these cytoskeletal and regulatory molecules in living cells, and for following some of their behaviors as channels are stimulated to open and cytosolic calcium builds in their vicinity. Such microscopy, coupled with biochemical and physiological probing, should help to establish the nature of the feedback loops putatively controlled by the linkage sites and their channel domains.

[1]  S. Strugger.  Praktikum der Zell- und Gewebephysiologie der Pflanze , 1949 .

[2]  F Sachs,et al.  Stretch‐activated single ion channel currents in tissue‐cultured embryonic chick skeletal muscle. , 1984, The Journal of physiology.

[3]  B. Pickard.  Voltage transients elicited by brief chilling. , 1984, Plant, cell & environment.

[4]  B. Pickard.  Voltage transients elicited by sudden step-up of auxin. , 1984, Plant, cell & environment.

[5]  B. Pickard,et al.  Detection and Transduction of Physical Stimuli in Plants , 1987 .

[6]  A. Hofmann,et al.  Shape and movement of the endoplasmic reticulum in onion bulb epidermis cells: possible involvement of actin , 1987 .

[7]  N. Allen,et al.  Dynamics of the endoplasmic reticulum in living onion epidermal cells in relation to microtubules, microfilaments, and intracellular particle movement , 1988 .

[8]  D. Cheresh,et al.  RGD-dependent linkage between plant cell wall and plasma membrane: consequences for growth , 1989, The Journal of cell biology.

[9]  C. Lloyd,et al.  Reconstitution of intermediate filaments from a higher plant. , 1989, The Biochemical journal.

[10]  D. Flanders,et al.  Computer-aided 3-D reconstruction of interphase epidermal cells of Datura stramonium reveals assembly , 1989 .

[11]  C. Lloyd,et al.  A Monoclonal Antibody Raised Against Cytoplasmic Fibrillar Bundles from Carrot Cells, and its Cross-Reaction with Animal Intermediate Filaments , 1989 .

[12]  E. Schnepf,et al.  Mobile and immobile endoplasmic reticulum in onion bulb epidermis cells: short- and long-term observations with a confocal laser scanning microscope. , 1990, European journal of cell biology.

[13]  S. Assmann,et al.  Evidence for G-Protein Regulation of Inward K+ Channel Current in Guard Cells of Fava Bean. , 1991, The Plant cell.

[14]  L. C. Sanders,et al.  A Homolog of the Substrate Adhesion Molecule Vitronectin Occurs in Four Species of Flowering Plants. , 1991, The Plant cell.

[15]  F Sachs,et al.  Quantitative video microscopy of patch clamped membranes stress, strain, capacitance, and stretch channel activation. , 1991, Biophysical journal.

[16]  F Sachs,et al.  Stretch-sensitive ion channels: an update. , 1992, Society of General Physiologists series.

[17]  W. J. Lucas,et al.  Expression of an inward-rectifying potassium channel by the Arabidopsis KAT1 cDNA. , 1992, Science.

[18]  F. Gaymard,et al.  Cloning and expression in yeast of a plant potassium ion transport system. , 1992, Science.

[19]  A. Harmon,et al.  Calcium-Modulated Proteins: Targets of Intracellular Calcium Signals in Higher Plants , 1992 .

[20]  O. Hamill,et al.  Rapid adaptation of single mechanosensitive channels in Xenopus oocytes. , 1992, Proceedings of the National Academy of Sciences of the United States of America.

[21]  J. Ding,et al.  Gravity Sensing by Higher Plants , 1992 .

[22]  K. Palme,et al.  Molecular analysis of an auxin binding protein gene located on chromosome 4 of Arabidopsis. , 1992, The Plant cell.

[23]  M. Driscoll,et al.  Molecular genetics of cell death in the nematode Caenorhabditis elegans. , 1992, Journal of neurobiology.

[24]  M. Saunders,et al.  Purification and immunological detection of pea nuclear intermediate filaments: evidence for plant nuclear lamins. , 1992, Journal of cell science.

[25]  K. Palme,et al.  5'-Azido-[3,6-3H2]-1-napthylphthalamic acid, a photoactivatable probe for naphthylphthalamic acid receptor proteins from higher plants: identification of a 23-kDa protein from maize coleoptile plasma membranes. , 1992, Proceedings of the National Academy of Sciences of the United States of America.

[26]  K. Oparka,et al.  Direct evidence for pressure-generated closure of plasmodesmata , 1992 .

[27]  P. Hepler,et al.  Microtubule and F-actin dynamics at the division site in living Tradescantia stamen hair cells , 1992 .

[28]  H. Goodman,et al.  Expression of antisense or sense RNA of an ankyrin repeat-containing gene blocks chloroplast differentiation in arabidopsis. , 1992, The Plant cell.

[29]  B. Pickard,et al.  Mechanically activated ion channels occur in vacuoles of onion bulb scale parenchyma , 1992 .

[30]  J. Ding,et al.  The mechanosensory calcium-selective ion channel: key component of a plasmalemmal control centre? , 1993, Australian journal of plant physiology.

[31]  S. Diamond,et al.  Mechanical perturbation of cultured human endothelial cells causes rapid increases of intracellular calcium. , 1993, The American journal of physiology.

[32]  N. Carpita,et al.  Enrichment of vitronectin- and fibronectin-like proteins in NaCI-adapted plant cells and evidence for their involvement in plasma membrane-cell wall adhesion. , 1993, The Plant journal : for cell and molecular biology.

[33]  M. Humphries,et al.  Integrins: a review of their structure and mechanisms of ligand binding. , 1993, Symposia of the Society for Experimental Biology.

[34]  M. Fricker,et al.  Modulation of K+ channels in Vicia stomatal guard cells by peptide homologs to the auxin-binding protein C terminus. , 1993, Proceedings of the National Academy of Sciences of the United States of America.

[35]  B. Gunning,et al.  Cytoskeletal dynamics in living plant cells , 1993 .

[36]  J. Ding,et al.  Mechanosensory calcium-selective cation channels in epidermal cells. , 1993, The Plant journal : for cell and molecular biology.

[37]  N. Ruijter,et al.  Immunodetection of spectrin antigens in plant cells , 1993 .

[38]  M. Pasdar,et al.  Disorganization of microfilaments and intermediate filaments interferes with the assembly and stability of desmosomes in MDCK epithelial cells. , 1993, Cell motility and the cytoskeleton.

[39]  D. Gilligan,et al.  The spectrin-based membrane skeleton and micron-scale organization of the plasma membrane. , 1993, Annual review of cell biology.

[40]  R. M. Spanswick,et al.  Evidence for a membrane skeleton in higher plants , 1993, FEBS letters.

[41]  D. M. Shotton.  Electronic light microscopy : the principles and practice of video-enhanced contrast, digital intensified fluorescence, and confocal scanning light microscopy , 1993 .

[42]  W. T. Mason,et al.  Fluorescent and luminescent probes for biological activity : a practical guide to technology for quantitative real-time analysis , 1993 .

[43]  J. McNally,et al.  Wall‐to‐membrane linkers in onion epidermis: some hypotheses , 1993 .

[44]  H. Cantiello,et al.  Activation of epithelial Na+ channels by protein kinase A requires actin filaments. , 1993, The American journal of physiology.

[45]  N. Carpita,et al.  The plant cytoskeleton-cell-wall continuum. , 1993, Trends in cell biology.

[46]  O. Hamill,et al.  Molecular clues to mechanosensitivity. , 1993, Biophysical journal.

[47]  Anthony Charles Neville,et al.  Biology of Fibrous Composites: Development beyond the Cell Membrane , 1993 .

[48]  P. Hepler,et al.  Microinjection of fluorescent brain tubulin reveals dynamic properties of cortical microtubules in living plant cells , 1993 .

[49]  John J. Lemasters,et al.  Optical microscopy: emerging methods and applications , 1993 .

[50]  N. Battey,et al.  The control of exocytosis in plant cells. , 1993, The New phytologist.

[51]  H. Cantiello,et al.  Actin-binding protein contributes to cell volume regulatory ion channel activation in melanoma cells. , 1993, The Journal of biological chemistry.

[52]  J. Ding,et al.  Modulation of mechanosensitive calcium-selective cation channels by temperature. , 1993, The Plant journal : for cell and molecular biology.

[53]  M. Schwartz,et al.  A 50-kDa integrin-associated protein is required for integrin-regulated calcium entry in endothelial cells. , 1993, The Journal of biological chemistry.

[54]  P. Hepler,et al.  Quantification of microtubule dynamics in living plant cells using fluorescence redistribution after photobleaching. , 1994, Journal of cell science.

[55]  A. Hitt,et al.  Membrane interactions with the actin cytoskeleton. , 1994, Current opinion in cell biology.

[56]  R. Lew,et al.  Cytoskeletal regulation of ion channel distribution in the tip-growing organism Saprolegnia ferax. , 1994, Journal of cell science.

[57]  K. Oparka.  Plasmolysis: new insights into an old process , 1994 .

[58]  M. Adams,et al.  Three types of Ca2+ channel trigger secretion with different efficacies in chromaffin cells , 1994, Nature.

[59]  C. Ware,et al.  Two Classes of Proteins and mRNAs in Lilium longiflorum L. Identified by Human Vitronectin Probes , 1994, Plant physiology.

[60]  P. Shaw,et al.  Microinjected profilin affects cytoplasmic streaming in plant cells by rapidly depolymerizing actin microfilaments , 1994, Current Biology.

[61]  M. Cahalan,et al.  Membrane chloride conductance and capacitance in Jurkat T lymphocytes during osmotic swelling. , 1994, Biophysical journal.

[62]  J. Crawford,et al.  Behaviour of plasma membrane, cortical ER and plasmodesmata during plasmolysis of onion epidermal cells , 1994 .

[63]  L. Schild,et al.  Amiloride-sensitive epithelial Na+ channel is made of three homologous subunits , 1994, Nature.

[64]  W. Webb,et al.  Transduction of membrane tension by the ion channel alamethicin. , 1994, Biophysical journal.

[65]  J. Mills,et al.  Actin-based cytoskeleton regulates a chloride channel and cell volume in a renal cortical collecting duct cell line. , 1994, The Journal of biological chemistry.

[66]  E. Hay,et al.  Guidebook to the extracellular matrix and adhesion proteins , 1995 .

[67]  Z. Zhai,et al.  Intermediate filaments in higher plant cells and their assembly in a cell-free system , 1992, Protoplasma.

[68]  K. Thimann,et al.  Actin and the elongation of plant cells , 1992, Protoplasma.