Roger Spanswick, Ph.D.   Professor   V Profile and CV	316 Riley Robb   rms6@cornell.edu   Web site
Plant metabolic engineering, ion transport, amino acid transport, sugar transport, photosynthate   partitioning, heavy metal transport, electrophysiology

 

Research Interests

Professional CV

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Education

• B.Sc. (Physics), University of Birmingham, England, 1960.
• Diploma in Biophysics, University of Edinburgh, Scotland, 1961.
• Ph.D. (Biophysics), University of Edinburgh, Scotland, 1964.

Appointments

• Assistant Lecturer, Department of Natural Philosophy, University of Edinburgh, 1962-64.
• Postdoctoral Research Fellow in Plant Biophysics, Botany School, University of Cambridge, 1964-67.
• Assistant Professor of Plant Physiology, Cornell University, 1967-73.
• Associate Professor, Cornell University, 1973-79.
• Professor, Cornell University, 1979-2001
• Professor, Biological and Environmental Engineering, Cornell University, 2001-present

Professional Societies

• American Association for the Advancement of Science
• American Biophysical Society
• American Society of Plant Biologists
• Institute of Biological Engineering
• Society for Experimental Biology (U.K.)
• Canadian Society of Plant Physiologists

Awards

• N.Y.S. College of Agriculture and Life Sciences, Traveling Fellowship 1973
• Science Research Council (U.K.) Senior Visiting Fellowship. (Botany School, University of Cambridge, 1973-74)
• Guggenheim Fellowship. (University of California, Davis, 1981-82)

Editorial Activities

• Member of the Editorial Board of Plant Physiology, 1974-88.
• Member of the Review Board of Plant, Cell and Environment, 1977-92.
• Guest Reviewer for the Biophysical Journal; Journal of Membrane Biology; Biochimica Biophysica Acta; Journal of Experimental Botany; Canadian Journal of Botany; Australian Journal of Plant Physiology; Planta; Plant, Cell and Environment; Plant Physiology; Plant Physiology and Biochemistry; Plant Science; Physiologia Plantarum; The Plant Journal.

Meeting Organization

• Chairman of Workshop on Electrophysiology and Membrane Transport, American Society of Plant Physiologists Annual Meeting, 1978.
• Organizing and Program Committees of the International Workshop on Membrane Transport in Plants, University of Toronto, July 1979.
• International Program Committee, Workshop on Plant Membrane Transport, Sydney, 1986.

Federal Grant Panels

• NSF Plant Biology Postdoctoral Fellowships, 1987
• USDA/GRGO Environmental Stress, 1987
• USDA/CRGO Developmental Plant Biology, 1988

Teaching

• Biological and Environmental Engineering 484 Metabolic Engineering
• Biological and Environmental Engineering 647 Transport of Water in Plants
• Biological and Environmental Engineering 649 Transport of Solutes in Plants

Administrative

• Graduate Faculty Representative, Field of Botany, 1974-1977 and 1987
• Policy Committee, College of Agriculture and Life Sciences, 1992-1995
• Agriculture Council, College of Agriculture and Life Sciences, 1996-1999

Publications

Lomer, T.R. and Spanswick, R.M. (1961) A new crystalline form of lauric acid. Acta Crystallographica, 14, 312.

Spanswick, R.M. and Williams, E.J. (1964) Electrical potentials and Na, K, and Cl concentrations in the vacuole and cytoplasm of Nitella translucens. Journal of Experimental Botany, 15, 193-200.

Bowling, D.J.F. and Spanswick, R.M. (1964) Active transport of ions across the root of Ricinus communis. Journal of Experimental Botany, 15, 422-427.

Spanswick, R.M. and Williams, E.J. (1965) Ca fluxes and membrane potentials in Nitella translucens. Journal of Experimental Botany, 16, 463-473.

Bowling, D.J.F., Macklon, A.E.S. and Spanswick, R.M. (1966) Active and passive transport of the major nutrient ions across the root of Ricinus communis. Journal of Experimental Botany, 17, 410-416.

Spanswick, R.M., Stolarek, J. and Williams, E.J. (1967) The membrane potential of Nitella translucens. Journal of Experimental Botany, 18, 1-16.

Spanswick, R.M. and Costerton, J.W.F. (1967) Plasmodesmata in Nitella translucens: structure and electrical resistance. Journal of Cell Science, 2, 451-464.

Spanswick, R.M. (1968) Measurements of potassium ion activity in the cytoplasm of the Characeae as a test of the sorption theory. Nature, 218, 357.

Spanswick, R.M. (1970) The effects of bicarbonate ions and external pH on the membrane potential and resistance of Nitella translucens. Journal of Membrane Biology, 2, 59-70.

Spanswick, R.M. (1970) Electrophysiological techniques and the magnitudes of the membrane potentials and resistances of Nitella translucens. Journal of Experimental Botany, 21, 617-627.

Spanswick, R.M. (1972) Electrical coupling between the cells of higher plants: a direct demonstration of intercellular transport. Planta, 102, 215-227.

Spanswick, R.M. (1972) Evidence for an electrogenic ion pump in Nitella translucens. I. The effects of pH, K⁺, Na+, light and temperature on the membrane potential and resistance. Biochimica et Biophysica Acta, 288, 73-89.

Spanswick, R.M. (1973) Electrogenesis in photosynthetic tissues. In: Workshop on Ion Transport in Plants (Anderson, W.P., ed.), London: Academic Press, pp. 113-128.

Spanswick, R.M. (1974) Hydrogen ion transport in giant algal cells. Canadian Journal of Botany, 52, 1029-1034.

Spanswick, R.M. (1974) Evidence for an electrogenic ion pump in Nitella translucens. II. Control of the light-stimulated component of the membrane potential. Biochimica et Biophysica Acta, 332, 387-398.

Spanswick, R.M. (1974) Symplasmic transport in plants. Symposia of the Society for Experimental Biology, 28, 127-137.

Spanswick, R.M. (1976) Plasmodesmata and symplasmic transport. In: Encyclopedia of Plant Physiology, New Series. Berlin: Springer-Verlag., Vol IIB, pp. 35-53.

Williams, S.E. and Spanswick, R.M. (1976) Propagation of the neuroid action potential of the carnivorous plant Drosera. Journal of Comparative Physiology, 108, 211-223.

Spanswick, R.M. and Miller, A.G. (1977) The effect of CO₂ on the Cl^- influx and electrogenic pump in Nitella translucens. In: Transmembrane Ionic Exchanges in Plants, C.N.R.S., Paris, pp. 239-240.

Spanswick, R.M. and Miller, A.G. (1977) Measurement of the cytoplasmic pH in Nitella translucens: comparison of the values obtained by the microelectrode and weak acid methods. Plant Physiology, 59, 664-666.

Etherton, B., Keifer, D.A. and Spanswick, R.M. (1977) Comparison of three methods for the measurement of the electrical resistances of plant cell membranes. Plant Physiology, 60, 684-688.

Lucas, W.J., Spanswick, R.M. and Dainty, J. (1978) HCO₃^- influx across the plasmalemma of Chara corallina: physiological and biophysical influence of 10 mM K⁺. Plant Physiology, 61, 487-493.

Keifer, D.W. and Spanswick, R.M. (1978) The activity of the electrogenic pump in Chara corallina as inferred from measurements of the membrane potential, conductance and potassium permeability. Plant Physiology, 62, 653-661.

Walton, J.D., Earle, E.D., Yoder, O.C. and Spanswick, R.M. (1979) Reduction of the steady-state ATP levels in susceptible corn mesophyll protoplasts by Helminthosporium maydis race T toxin. Plant Physiology, 63, 806-810.

Keifer, D.W. and Spanswick, R.M. (1979) Correlation of ATP levels in Chara corallina with the activity of the electrogenic pump. Plant Physiology, 64, 165-168.

Spanswick, R.M. (1980) Biophysical control of electrogenic pumps in the Characeae. In: Plant Membrane Transport (Spanswick, R.M., Lucas, W.J. and Dainty, J., eds.), Amsterdam: Elsevier/North Holland Biomedical Press, pp. 305-313.

Lichtner, F.T. and Spanswick, R.M. (1980) Sucrose/proton cotransport in developing soybean cotyledons. In: Plant Membrane Transport (Spanswick, R.M., Lucas, W.J. and Dainty, J., eds.), Amsterdam: Elsevier/North Holland Biomedical Press, pp. 545-546.

Perlin, D.S. and Spanswick, R.M. (1980) Proton transport in plasma membrane vesicles. In: Plant Membrane Transport (Spanswick, R.M., Lucas, W.J. and Dainty, J., eds.), Amsterdam: Elsevier/North Holland Biomedical Press, pp. 529-530.

Perlin, D.S. and Spanswick, R.M. (1980) Labeling and isolation of plasma membranes from corn leaf protoplasts. Plant Physiology, 65, 1053-1057.

DuPont, F.M., Burke, L.L. and Spanswick, R.M. (1981) Characterization of a partially purified adenosine triphosphatase from a corn root plasma membrane fraction. Plant Physiology, 67, 59-63

Lichtner, F.T. and Spanswick, R.M. (1981) Electrogenic sucrose transport in developing soybean cotyledons. Plant Physiology, 67, 869-874.

Lichtner, F.T. and Spanswick, R.M. (1981) Sucrose uptake by developing soybean cotyledons. Plant Physiology, 68, 693-698.

Spanswick, R.M. (1981) Electrogenic ion pumps. Annual Review of Plant Physiology, 32, 267-289.

Perlin, D.S. and Spanswick, R.M. (1981) Characterization of ATPase activity associated with corn leaf plasma membranes. Plant Physiology, 68, 521-526.

Lichtner, F.T., Lucas, W.J. and Spanswick, R.M. (1981) Effect of sulfhydryl reagents on the biophysical properties of the plasmalemmma of Chara corallina. Plant Physiology, 68, 899-904.

Spanswick, R.M. (1982) The electrogenic pump in the plasma membrane of Nitella. Current Topics in Membranes and Transport, 16, 35-47.

DuPont, F.M., Bennett, A.B. and Spanswick, R.M. (1982) Proton transport in microsomal vesicles from corn roots. In: Plasmalemma and Tonoplast: Their Functions in the Plant Cell (Ed. D. Marmé, E. Marrè and R. Hertel). Amsterdam: Elsevier Biomedical Press, pp. 409-416.

Perlin, D.S. and Spanswick, R.M. (1982) Isolation and assay of corn root membrane vesicles with reduced proton permeability. Biochimica et Biophysica Acta, 690, 178-186.

DuPont, F.M., Bennett, A.B. and Spanswick, R.M. (1982) Localization of a proton-translocating ATPase on sucrose gradients. Plant Physiology, 70, 1115-1119.

DuPont, F.M., Giorgi, D. and Spanswick, R.M. (1982) Characterization of a proton-translocating ATPase in microsomal vesicles from corn roots. Plant Physiology, 70, 1649-1699.

Bennett, A.B. and Spanswick, R.M. (1983) Optical measurements of ΔpH and ΔY in corn root membrane vesicles. Kinetic analysis of Cl^- effects on a proton-translocating ATPase. Journal of Membrane Biology, 71, 95-107.

Bennett, A.B. and Spanswick, R.M. (1983) Solubilization and reconstitution of an anion-sensitive H⁺-ATPase from corn roots. Journal of Membrane Biology, 75, 21-31.

Lew, R. and Spanswick, R.M. (1983) Chlorpromazine induces membrane potential depolarization, ATP loss and inhibits microsomal ATPase in soybean (Glycine max L.) roots. Biochimica et Biophysica Acta, 731, 421-427.

Bennett, A.B. and Spanswick, R.M. (1983) Derepression of amino acid/H⁺ cotransport in developing soybean embryos. Plant Physiology, 72, 781-786.

O'Neill, S.D., Bennett, A.B. and Spanswick, R.M. (1983) Characterization of a NO₃^-- sensitive ATPase from corn roots. Plant Physiology, 72, 837-846.

Spanswick, R.M. and Bennett, A.B. (1984) Electrogenic pumps in higher plants. In: Electrogenic Transport: Fundamental Principles and Physiological Implications (M.P. Blaustein and M. Lieberman, eds.), New York: Raven Press, pp. 331-344.

Bennett, A.B., Sweger, B.L. and Spanswick, R.M. (1984) Sink to source translocation in soybean. Plant Physiology, 74, 434-436.

Bennett, A.B., O'Neill, S.D. and Spanswick, R.M. (1984) H⁺-ATPase activity from storage tissue of Beta vulgaris. I. Identification and characterization of an anion-sensitive H⁺-ATPase. Plant Physiology, 74, 538-544.

Bennett, A.B. and Spanswick, R.M. (1984) H⁺-ATPase activity from storage tissue of Beta vulgaris. II. H⁺+/ATP stoichiometry of an anion-sensitive H⁺-ATPase. Plant Physiology, 74, 545-548.

Hsu, F.C., Bennett, A.B. and Spanswick, R.M. (1984) Concentrations of sucrose and nitrogenous compounds in the free space of developing soybean seed coats and embryos. Plant Physiology, 75, 181-186.

Lew, R.R. and Spanswick, R.M. (1984) Characterization of the electrogenicity of soybean (Glycine max L.) roots: ATP dependence and effect of ATPase inhibitors. Plant Physiology, 75, 1-6.

O'Neill and Spanswick, R.M. (1984) Solubilization and reconstitution of a vanadate-sensitive H⁺-ATPase from the plasma membrane of Beta vulgaris. Journal of Membrane Biology, 79, 231-243.

O'Neill, S.D. and Spanswick, R.M. (1984) Characterization of native and reconstituted plasma membrane H⁺-ATPase from the plasma membrane of Beta vulgaris. Journal of Membrane Biology, 79, 245-256.

Spanswick, R.M., O'Neill, S.D. and Bennett, A.B. (1984) Plasma membrane and tonoplast ATPases: characteristics, H⁺ transport and reconstitution. In: Membrane Transport in Plants (W.J. Cram, K. Janacek, R. Rybova, and K. Sigler, eds.), Prague: Academia, pp. 519-524.

Bennett, A.B. and Spanswick, R.M. (1984) Non-saturating mechanisms of solute uptake by developing soybean embryos. In: Membrane Transport in Plants (W.J. Cram, K.Janacek, R. Rybova and K. Sigler,eds.), Prague: Academia, pp. 381-382.

Morse, M.J. and Spanswick, R.M. (1984) Effect of lead acetate on the K⁺ influx in Nitella translucens. In: Membrane Transport in Plants (W.J. Cram, K.Janacek, R. Rybova and K. Sigler, eds.), Prague: Academia, pp. 336-337.

Bennett, A.B. and Spanswick, R.M. (1984) Energetics of H⁺ transport in tonoplast membrane vesicles. In: Membrane Transport in Plants (W.J. Cram, K.Janacek, R. Rybova and K. Sigler, eds.), Prague: Academia, pp. 540-541.

O'Neill, S.D., Bennett, A.B. and Spanswick, R.M.(1984) NO₃^--sensitive ATPase activity: a new tonoplast marker. In: Membrane Transport in Plants (W.J. Cram, K. Janacek, R. Rybova and K. Sigler, eds.), Prague: Academia, pp. 565-566.

O'Neill, S.D. and Spanswick, R.M. (1984) Solubilization and reconstitution of the plasma membrane proton-translocating ATPase of red beet. In: Membrane Transport in Plants (W.J. Cram, K. Janacek, R. Rybova and K. Sigler, eds.), Prague: Academia, pp. 567-568.

O'Neill, S.D. and Spanswick, R.M. (1984) The effects of vanadate on the plasma membrane ATPase of red beet and corn. Plant Physiology, 75, 586-591.

Spanswick, R.M. (1984) Characterization and reconstitution of H⁺- ATPases from plant cell membranes. Current Topics in Plant Biochemistry and Physiology, 3, 108-119.

Lew, R.R. and Spanswick, R.M. (1984) Proton pumping activities of soybean (Glycine max L.) root microsomes: localization and sensitivity to nitrate and vanadate. Plant Science Letters, 36, 187-193.

Spanswick, R.M. (1985) The role of H⁺-ATPases in plant nutrient transport. In: Frontiers of Membrane Research in Agriculture (J.B. St. John, E. Berlin and P.C. Jackson, eds.), Totowa: Rowman & Allanheld, pp. 243-256.

Bennett, A.B. and Spanswick, R.M. (1985) The use of optical probes to monitor formation of pH gradients and membrane potential in tonoplast membrane vesicles. In: Biochemistry and Function of Vacuolar ATPase in Fungi and Plants (B.P. Marin, ed.), Berlin: Springer-Verlag, pp. 119-128.

Lew, R.R. and Spanswick, R.M. (1985) Characterization of anion effects on the nitrate-sensitive ATP-dependent proton pumping activity of soybean (Glycine max L.) seedling root microsomes. Plant Physiology, 77, 352-357.

Bennett, A.B., O'Neill, S.D., Eilmann, M. and Spanswick, R.M. (1985) H⁺-ATPase activities from storage tissue of Beta vulgaris. III. Modulation of ATPase activity by reaction substrates and products. Plant Physiology, 78, 495-499.

Lew, R.R., Bushunow, N. and Spanswick, R.M. (1985) ATP-dependent proton-pumping activities of zucchini fruit microsomes. A study of tonoplast and plasma membrane activities. Biochimica et Biophysica Acta, 821, 341-347.

Tucker, E.B. and Spanswick, R.M. (1985) Translocation in staminal hairs of Setcreasea purpurea. II. Kinetics of intercellular transport. Protoplasma, 128, 167-172.

Morse, M.J. and Spanswick, R.M. (1985) ATP requirements for the electrogenic pump in perfused Nitella cells. Biochimica et Biophysica Acta, 818, 386-390.

De Michelis, M.I. and Spanswick, R.M. (1986) H⁺-pumping driven by the vanadate-sensitive ATPase in membrane vesicles from corn roots. Plant Physiology, 81, 542-547.

Spanswick, R.M. (1986) Proton-translocating ATPases and sugar transport: involvement and regulation. In: Phloem Transport (J. Cronshaw, W.J. Lucas and R.T. Giaquinta, eds.), New York: Alan R. Liss, pp. 93-101.

Anthon, G.E. and Spanswick, R.M. (1986) Purification and properties of the H⁺-translocating ATPase from the plasma membrane of tomato roots. Plant Physiology, 81, 1080-1085.

Vreugdenhil, D. and Spanswick, R.M. (1987) The effect of vanadate on sucrose-proton cotransport in Ricinus cotyledons. Plant Physiology, 84, 605-608.

Ellis, E.C. and Spanswick, R.M. (1987) Sugar efflux from attached seed coats of Glycine max (L.) Merr. Journal of Experimental Botany, 38, 1470-1483.

Spanswick, R.M. (1987) Properties of proton-pumping ATPases and their involvement in growth. In: Physiology of Cell Expansion During Plant Growth. Proceedings of the Second Annual Penn State Symposium in Plant Physiology (Cosgrove, D.J. and Knievel, P., eds.), Rockville: American Society of Plant Physiologists, pp. 101-108

Bennett, A.B., Leigh, R.A. and Spanswick, R.M. (1988) The H⁺-ATPase from vacuolar membranes of higher plants. Methods in Enzymology, 157, 579-590.

Wrona, A.F., Spanswick, R.M. and Aist, J.R. (1988) Calcium transport in protoplasts isolated from ml-o barley mutants resistant and susceptible to powdery mildew. Plant Physiology, 88, 1157-1162.

Vreugdenhil, D. and Spanswick, R.M. (1988) Measurements of the trans-cotyledon potential in Ricinus. Journal of Plant Physiology, 133, 567-571.

Minorsky, P.V. and Spanswick, R.M. (1989) Electrophysiological evidence for a role for calcium in temperature sensing by roots of cucumber seedlings. Plant, Cell and Environment, 12, 137-143.

Spanswick, R.M. (1989) Some problems concerning proton cotransport at the plasma membrane. In: Plant Membrane Transport (J. Dainty et al., eds.), Amsterdam: Elsevier Science Publishers, pp. 13-18.

Spanswick, R.M. (1989) Light-induced hyperpolarization in Nitella. Methods in Enzymology, 174, 479-489.

Spanswick, R.M. (1989) Vacuolar and cell membrane H⁺-ATPases of plant cells. Annals of the New York Academy of Sciences, 574, 180-188.

McClure, P.R., Kochian, L.V., Spanswick, R.M. and Shaff, J.E. (1990) Evidence for cotransport of nitrate and protons in maize roots. I. Effects of nitrate on the membrane potential. Plant Physiology, 93, 271-280.

McClure, P.R., Kochian, L.V., Spanswick, R.M. and Shaff, J.E. (1990) Evidence for cotransport of nitrate and protons in maize roots. II. Measurement of NO₃^- and H⁺ fluxes with ion-selective microelectrodes. Plant Physiology, 93, 281-289.

Henriksen, G.H., Bloom, A.J. and Spanswick, R.M. (1990) Measurement of net fluxes of ammonium and nitrate at the surface of barley roots with ion-selective microelectrodes. Plant Physiology, 93, 290-294.

Spanswick, R.M. and Anthon, G.E. (1990) Purification, reconstitution and kinetic properties of the plasma membrane ATPase of tomato roots. In: Membrane Transport in Plants and Fungi (M.J. Beilby, N.A. Walker and R.J. Smith, eds.), pp. 162-165. University of Sydney, Sydney.

Lackney, V.K., Spanswick, R.M., Hirasuna, T.J. and Shuler, M.L. (1990) PEG-enhanced, electric field-induced fusion of tonoplast and plasmalemma of grape protoplasts. Plant Cell, Tissue and Organ Culture, 23, 107-114.

Loper, M.T. and Spanswick, R.M. (1991) Auxin transport in suspension-cultured soybean root cells. I. Characterization. Plant Physiology, 96, 184-191.

Loper, M.T. and Spanswick, R.M. (1991) Auxin transport in suspension-cultured soybean root cells. II. Anion effects on carrier-mediated uptake. Plant Physiology, 96, 192-197.

Hirasuna, T.J., Shuler, M.L., Lackney, V.K. and Spanswick, R.M. (1991) Enhanced anthocyanin production in grape cell cultures. Plant Science, 78, 107-120.

Meissner, S.T. and Spanswick, R.M. (1992) Use of the stability of vacuoles isolated from the storage parenchyma cells of dormant and freshly harvested red beets (Beta vulgaris L.) to test for population differences. Plant Science, 82, 251-260.

Henriksen, G.H., Raman, D.R., Walker, L.P. and Spanswick, R.M. (1992) Measurement of net fluxes of ammonium and nitrate at the surface of barley roots using ion-selective microelectrodes. II. Patterns of uptake along the root axis and evaluation of the microelectrode flux estimation technique. Plant Physiology, 99, 734-737.

Ellis, E.C., Turgeon, R. and Spanswick, R.M. (1992) Quantitative analysis of photosynthate unloading in developing seeds of Phaseolus vulgaris L. I. The use of steady state labeling. Plant Physiology, 99, 635-642.

Ellis, E.C., Turgeon, R. and Spanswick, R.M. (1992) Quantitative analysis of photosynthate unloading in developing seeds of Phaseolus vulgaris L. II. Pathway and turgor-sensitivity. Plant Physiology, 99, 643-651.

Ellis, E.C., Turgeon, R. and Spanswick, R.M. (1992) Changes in photosynthate unloading from perfused seed coats of Phaseolus vulgaris L. induced by osmoticum and ethylenediaminetetraacetate (EDTA). Journal of Experimental Botany, 43, 1235-1241.

Faraday, C.D. and Spanswick, R.M. (1992) Maize root plasma membranes isolated by aqueous polymer two-phase partitioning: assessment of residual tonoplast ATPase and pyrophosphatase activities. Journal of Experimental Botany. 43, 1583-1590.

Faraday, C.D. and Spanswick, R.M. (1993) Evidence for a membrane skeleton in higher plants: a spectrin-like polypeptide co-isolates with rice root plasma membranes. FEBS Letters, 318, 313-316.

Fromm, J. and Spanswick, R.M. (1993) Characteristics of action potentials in willow (Salix viminalis L.) Journal of Experimental Botany, 44, 1119-1125.

Henriksen, G.H. and Spanswick, R.M. (1993) Investigations of the apparent induction of nitrate uptake in barley using NO₃^--selective microelectrodes. Modulation of coarse regulation of NO₃^- uptake by exogenous application of downstream metabolites in the NO₃^- assimilatory pathway. Plant Physiology, 103, 885-892.

Meissner, S.T. and Spanswick, R.M. (1994) Growth of storage organ and parenchyma cells in red beet (Beta vulgaris L.) Flux estimates and a hypothesis for lower sugar concentrations with increasing cell size. International Journal of Plant Sciences, 155, 36-48.

Faraday, C.D. and Spanswick, R.M. (1995) Differential stimulation by Cl^- of H⁺ transport and ATPase activity in purified plasma membrane vesicles from maize (Zea mays L.) roots. Journal of Experimental Botany, 46, 1169?1176.

Raman, D.R., Spanswick, R.M. and Walker, L.P. (1995) High temporal resolution of nitrate uptake from flowing solutions. Bioresource Technology, 53, 113?123.

Raman, D.R., Spanswick, R.M. and Walker, L.P. (1995) The kinetics of nitrate uptake from flowing solution by rice: influence of pretreatment and light. Bioresource Technology, 53, 125?132.

Faraday, C.D., Spanswick, R.M. and Bisson, M.A. (1996) Plasma membrane isolation from freshwater and salt-tolerant species of Chara: antibody cross-reactions and phosphohydrolase activities. Journal of Experimental Botany, 47, 589-594.

Tse, T.Y., Spanswick, R.M. and Jelinski, L.W. (1996) Quantitative evaluation of NMR and MRI methods to measure sucrose concentrations in plants. Protoplasma, 194, 54?62.

Kelly, M.O. and Spanswick, R.M. (1997) Maternal, single-gene regulation of assimilate partitioning in pea. Plant Physiology, 114, 1055-1059.

Wheeler, E.F., Albright, L.D., Spanswick, R.M., Walker, L.P. and Langhans, R.W. (1998) Nitrate uptake kinetics in lettuce as influenced by light and nitrate nutrition. Transactions of the ASAE, 41, 859-867.

Hay, J.O. and Spanswick, R.M. (2006) Mechanical and enzymatic separation of ripening rice (Oryza sativa L.) caryopsis tissues. Seed Science Research, 16, 223-227.

Spanswick, R.M. (2006) Electrogenic pumps. In: Plant Electrophysiology – Theory and Methods (A.G. Volkov, ed.), pp. 221-246. Berlin and Heidelberg: Springer-Verlag.K/font>

Mathieu, J., Linker, R., Levine, L., Albright, L., Both, A.J., Spanswick, R.M., Wheeler, R., deVilliers,D. and Langhans, R. (2006) Evaluation of the NiCoLet model for simulation of short-term hydroponic lettuce growth and nitrate uptake. Biosystems Engineering, 95, 323-337.K/font>

Hay, J.O. and Spanswick, R.M. (2006) Computational analysis of rice (Oryza sativa L.) panicle topology and ripening. Seed Science Research, 16, 243-250.

Hay, J.O. and Spanswick, R.M. (2007) Isolation of ripening rice (Oryza sativa L.) aleurone protoplasts for uptake studies. Plant Science, 172, 659-664.

Chang, K.N., Dees, N.H., Spanswick, R.M. and Ahner, B.A. Phytochelatin-mediated Cd transport in vacuolar membranes isolated from oat (Avena sativa L.) roots is induced by Cd and nutrient limitation. (In preparation)K/font>

Presented Papers, with written copy

Wheeler, E.F., L.D. Albright, L.P. Walker, R.M. Spanswick and R.W. Langhans. (1994) Plant growth and nitrogen uptake, Part I: Beyond the Michaelis-Menten relationship. Paper No. 947506. ASAE, The society for engineering in agricultural, food and biological systems, St. Joseph, MI. 15 pp.

Wheeler, E.F., L.D. Albright, L.P. Walker, R.M. Spanswick and R.W. Langhans. (1994) Plant growth and nitrogen uptake, Part II: Effects of light level and nitrate nutrition. Paper No. 947505. ASAE, The society for engineering in agricultural, food and biological systems, St. Joseph, MI. 14 pp.

Articles

Spanswick, R.M. (1974) Salt uptake and the hydrogen ion pump. Food and Life Sciences Quarterly, 7, 11-13.

Spanswick, R.M. (1983) Citation classic (Spanswick and Williams, 1964). Current Contents (AB and ES), 14, 18.

Spanswick, R.M. (1993) Citation classic (Spanswick, 1981). Creating plant proticity. Current Contents (A, B & ES), 24, 8.

Book

Spanswick, R.M., Lucas, W.J. and Dainty, J. (Eds.) (1980) Plant Membrane Transport: Current Conceptual Issues. International Workshop on Membrane Transport in Plants, Toronto, 1979. Amsterdam: Elsevier/North Holland. xviii + 670 pp.