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REFERENCES

  • Ageorges A., Issaly N., Picaud S., Delrot S. & Romieu C. (2000) Identification and functional expression in yeast of a grape berry sucrose carrier. Plant Physiology and Biochemistry 38, 177185.
  • Almon E., Horowitz M., Wang H.-L., Lucas W.J., Zamski E. & Wolf S. (1997) Phloem-specific expression of the tobacco mosaic virus movement protein alters carbon metabolism and partitioning in transgenic potato plants. Plant Physiology 115, 15991607.
  • Altus D.P. & Canny M.J. (1982) Loading of assimilates in wheat leaves. I. The specialisation of vein types for separate activities. Australian Journal of Plant Physiology 9, 571581.
  • Altus D.P. & Canny M.J. (1985) Loading of assimilates in wheat leaves. II. The path from chloroplast to vein. Plant, Cell and Environment 8, 275285.
  • Aoki N., Hirose T., Takahashi S., Ono K., Ishimaru K. & Ohsugi R. (1999) Molecular cloning and expression analysis of a gene for a sucrose transporter in maize (Zea mays L.). Plant and Cell Physiology 40, 10721078.
  • Atkins C. (2000) Biochemical aspects of assimilate transfers along the phloem path: N-solutes in lupins. Australian Journal of Plant Physiology 27, 531537.
  • Bagnall N., Wang X.-D., Scofield G.N., Furbank R.T., Offler C.E. & Patrick J.W. (2000) Sucrose transport-related genes are expressed in both maternal and filial tissues of developing wheat grains. Australian Journal of Plant Physiology 27, 10091020.
  • Baluska F., Cvrckova F., Kendrick-Jones J. & Volkmann D. (2001) Sink plasmodesmata as gateways for phloem unloading. Myosin VIII and calreticulin as molecular determinants of sink strength? Plant Physiology 126, 3946.
  • Barker L.K., Kühn C., Weise A., Schulz A., Gebhardt C., Hirner B., Hellmann H., Schulze W., Ward J.M. & Frommer W.B. (2000) SUT2, a putative sucrose sensor in sieve elements. Plant Cell 12, 11531164.
  • Beebe D.U. & Russin W.A. (1999) Plasmodesmata in the phloem-loading pathway. In Plasmodesmata. Structure, Function, Role in Cell Communication. (eds A. J. E. van Bel & W. J. P. van Kesteren) pp. 261294. Springer-Verlag, Berlin, Germany.
  • Van Bel A.J.E. (1993) Strategies of phloem loading. Annual Review of Plant Physiology and Plant Molecular Biology 44, 253281.
  • Van Bel A.J.E. (1996a) Interaction between sieve element and companion cell and the consequences for photoassimilate distribution. Two structural hardware frames with associated physiological software packages in dicotyledons. Journal of Experimental Botany 47, 11291140.
  • Van Bel A.J.E. (1996b) VIII. Carbohydrate processing in the mesophyll trajectory in symplasmic and apoplasmic phloem loading. Progress in Botany 57, 140167.
  • Van Bel A.J.E. & Oparka K.J. (1992) Pathways of phloem loading and unloading: a plea for uniform technology Carbon Partitioning Within and Between Organisms. (eds C. J. Pollock, J. F. Farrar & A. J. Gordon), pp. 249254. Bios Scientific Publishers, Oxford, UK.
  • Van Bel A.J.E., Ammerlaan A. & Van Dijk A.A. (1994) A three-step screening procedure to identify the mode of phloem loading intact leaves. Planta 192, 3139.
  • Van Bel A.J.E., Gamalei Y.V., Ammerlaan A. & Bik L.P.M. (1992) Dissimilar phloem loading in leaves with symplastic or apoplasmic minor-vein configurations. Planta 186, 518526.
  • Van Bel A.J.E., Mol F. & Ammerlaan A. (1986) Comparison of the uptake kinetics of valine and sucrose and their light-reactivity in mesophyll cells of Commelina benghalensis. Journal of Plant Physiology 123, 3744.
  • Bentwood B.J. & Cronshaw J. (1978) Cytochemical localization of adenosine triphosphate in the phloem of Pisum sativum and its relation to the function of transfer cells. Planta 140, 111120.
  • Botha C.E.J. & Cross R.H.M. (1997) Plasmodesmatal frequency in relation to short-distance transport and phloem loading in leaves of barley (Hordeum vulgare). Phloem is not loaded directly from the symplast. Physiologia Plantarum 99, 355362.
  • Botha C.E.J. & Cross R.H.M. (2000) Towards reconciliation of structure with function in plasmodesmata- who is the gatekeeper? Micron 31, 713721.
  • Botha C.E.J., Cross R.H.M., Van Bel A.J.E. & Peter C.E. (2000) Phloem loading in the sucrose export-defective (SXD-1) mutant maize is limited by callose deposition of plasmodesmata in bundle sheath vascular parenchyma interface. Protoplasma 214, 6572.
  • Bouché-Pillon S., Fleurat-Lessard P., Fromont J.-C., Serrano R. & Bonnemain J.-L. (1994) Immunolocalisation of the plasma membrane H+-ATPase in minor veins of Vicia faba in relation to phloem loading. Plant Physiology 105, 691697.
  • Bourquin S., Bonnemain J.-L. & Delrot S. (1990) Inhibition of loading of 14C-assimilates by p-chloromercuribenzenesulfonic acid. Localization of the apoplastic pathway in Vicia faba. Plant Physiology 92, 97102.
  • Bret-Harte M.S. & Silk W.K. (1994) Nonvascular, symplastic diffusion of sucrose cannot satisfy the carbon demands of growth in the primary root tip of Zea mays. Plant Physiology 105, 1933.
  • Brown B.B., Hall J.L. & Ho L.C. (1997) Sugar uptake by protoplasts isolated from tomato fruit tissues during various stages of fruit growth. Physiologia Plantarum 101, 533539.
  • Brown S.M., Oparka K.J., Sprent J.I. & Walsh K.B. (1995) Symplastic transport in soybean root nodules. Soil Biology and Biochemistry 27, 387399.
  • Bush D.R. (1993) Proton-coupled sugar and amino acid transporters in plants. Annual Review of Plant Physiology and Plant Molecular Biology 44, 513542.
  • Bürkle L., Hibberd J.M., Quick W.P.K., Kühn C., Hirner B. & Frommer W.B. (1998) The H+-sucrose cotransporter NtSUT1 is essential for sugar export from tobacco leaves. Plant Physiology 118, 5968.
  • Cantrill L.C., Overall R.L. & Goodwin P.B. (1999) Cell-to-cell communication via plant endomembranes. Cell Biology International 23, 653661.
  • Chiou T.-J. & Bush D.R. (1998) Sucrose is a signal molecule in assimilate partitioning. Proceedings of the National Academy of Science USA 95, 47844788.
  • Cosgrove D.J. (1999) Enzymes and other agents that enhance cell wall extensibility. Annual Review of Plant Physiology and Plant Molecular Biology 50, 391418.
  • D’Aoust M.-A., Yelle S. & Nguyen-Quoc B. (1999) Antisense inhibition of tomato fruit sucrose synthase decreases fruit setting and the sucrose unloading capacity of young fruit. Plant Cell 11, 24072418.
  • Daie J. (1987) Interaction of cell turgor and hormones on sucrose uptake in isolated phloem of celery. Plant Physiology 84, 10331037.
  • Dannenhoffer J.M., Ebert W. & Evert R.F. (1990) Leaf vasculature in barley, Hordeum vulgare (Poaceae). American Journal of Botany 636653.
  • Darussalam, Cole M.A. & Patrick J.W. (1998) Auxin control of photoassimilate transport to and within developing grains of wheat. Australian Journal of Plant Physiology 25, 6977.
  • Davies C., Wolf T. & Robinson S.P. (1999) Three putative sucrose transporters are differentially expressed in grapevine tissues. Plant Science 147, 93100.
  • Day D.A., Kaiser B.N., Thomson R., Udvardi M.K., Moreau S. & Puppo A. (2001) Nutrient transport across symbiotic membranes from legume nodules. Australian Journal of Plant Physiology 28, 667674.
  • De Jong A., Koerselman-Kooij J.W., Schuurmans J.A.M.J. & Borstlap A.C. (1996) Characterisation of the uptake of sucrose and glucose by isolated seed coat halves of developing pea seeds. Evidence that a sugar facilitator with diffusional kinetics is involved in seed coat unloading. Planta 199, 486492.
  • De Jong A., Koerselman-Kooij J.W., Schuurmans J.A.M.J. & Borstlap A.C. (1997) The mechanisms of amino acid efflux from seed coats of developing pea seeds as revealed by uptake experiments. Plant Physiology 114, 731736.
  • Delrot S., Faucher M., Bonnemain J.-L. & Bonmort J. (1983) Nycthemeral changes in intracellular and apoplastic sugars in Vicia faba leaves. Physiology of Vegetables 21, 459467.
  • Delrot S., Rochat C., Tegeder M. & Frommer W.B. (2001) Amino acid transport. In Plant Nitrogen. (eds P. Lea & J. F. M. Gaudry), pp. 215235. INRA-Springer, Paris, France.
  • Despeghel J. & Delrot S. (1983) Energetics of amino acid uptake by Vicia faba leaf tissues. Plant Physiology 71, 16.
  • DeWitt N.D. & Sussman M.R. (1995) Immunocytological localisation of an epitope-tagged plasma membrane proton pump (H+-ATPase) in phloem. Plant Cell 7, 20532067.
  • Ding B., Handenshield J.S., Willmitzer L. & Lucas W.J. (1993) Correlation between arrested secondary plasmodesmal development and onset of accelerated leaf senescence in yeast invertase transgenic tobacco plants. Plant Journal 4, 179189.
  • Ding B., Parthasarathy M.V., Niklas K. & Turgeon R. (1988) A morphometric analysis of the phloem-unloading pathway in developing tobacco leaves. Planta 176, 307318.
  • Dreier L.P., Hunter J.J. & Ruftner H.P. (1998) Invertase activity, grape berry development and cell compartmentation. Plant Physiology and Biochemistry 36, 865872.
  • Emery R.J.N., Ma Q. & Atkins C.A. (2000) The forms and sources of cytokinins in developing white lupine seeds and fruits. Plant Physiology 123, 15931604.
  • Erickson R.O. (1986) Symplastic growth and symplastic transport. Plant Physiology 82, 11531160.
  • Erwee M.G., Goodwin P.B. & Van Bel A.J.E. (1985) Cell-cell communication in the leaves of Commelina cyanea and other plants. Plant, Cell and Environment. 8, 173178.
  • Eschrich W. (1980) Free space invertase, its possible role in phloem unloading.Berichte der Deutschen Botanischen Gesellschaft 93, 363378.
  • Evert R.F. & Russin W.A. (1993) Structurally, phloem unloading in the maize leaf cannot be symplastic. American Journal of Botany 80, 13101317.
  • Farrar J.F., Minchin P.E.H. & Thorpe M.R. (1995) Carbon import into barley roots: effects of sugars and relation to cell expansion. Journal of Experimental Botany 46, 18591867.
  • Farrar J., Van Der Schoot C., Drent P. & Van Bel A.J.E. (1992) Symplastic transport of lucifer yellow in mature leaf blades of barley: potential mesophyll-to-sieve transfer. New Phytologist 120, 191197.
  • Fieuw S. & Patrick J.W. (1993) Mechanism of photosynthate efflux from Vicia faba L. seed coats. I. Tissue studies. Journal of Experimental Botany 44, 6574.
  • Filion L., Ageorges A., Picaud S., Coutos-Thevenot P., Lemoine R., Romieu C. & Delrot S. (1999) Cloning and expression of a hexose transporter gene expressed during ripening of grape berry. Plant Physiology 120, 10831093.
  • Fischér W.N., Andre B., Rentsch D., Krolkiewicz S., Tegeder M., Breitkreuz K. & Frommer W.B. (1998) Amino acid transport in plants. Trends in Plant Science 3, 188195.
  • Fisher D.B. (1988) Movement of lucifer yellow in leaves of Coleus blumei Benth. Plant, Cell and Environment 11, 639644.
  • Fisher D.B. & Cash-Clark C.E. (2000a) Sieve tube unloading and post-phloem transport of fluorescent tracers and proteins injected into sieve tubes via severed aphid stylets. Plant Physiology 123, 125137.
  • Fisher D.B. & Cash-Clark C.E. (2000b) Gradients in water potential and turgor pressure along the translocation pathway during grain filling in normally watered and water-stressed wheat plants. Plant Physiology 123, 139147.
  • Fisher D.B. & Wang N. (1993) A kinetic and microautoradiographic analysis of [14C] sucrose import by developing wheat grains. Plant Physiology 101, 391398.
  • Fisher D.B. & Wang N. (1995) Sucrose concentration gradients along the post-phloem transport pathway in the maternal tissues of developing wheat grains. Plant Physiology 109, 587592.
  • Fliege R., Flügge U.-I., Werdan K. & Heldt H.W. (1978) Specific transport of inorganic phosphate, 3-PGA and triosephosphates across the inner membrane of the envelope in spinach chloroplasts. Biochimica et Biophysica Acta 502, 232247.
  • Flora L.L. & Madore M.A. (1996) Significance of minor-vein anatomy to carbohydrate transport. Planta 198, 171178.
  • Fritz D., Evert R.F. & Nasse H. (1989) Loading and transport of assimilates in different maize leaf bundles. Planta 178, 19.
  • Gamalei Y.V. (1989) Structure and function of leaf minor veins in trees and herbs. A taxonomic review. Trees 3, 96110.
  • Gamalei Y.V., Pakhomova M.V., Syutkina A.V. & Voitsekhovskaja O.V. (2000) Compartmentation of assimilate fluxes in leaves. I. Ultrastructural responses of mesophyll and companion cells to the alteration of assimilate export. Plant Biology 2, 98106.
  • Gamalei Y.V., Van Bel A.J.E., Pakhomova M.V. & Sjutkina A.V. (1994) Effects of temperature on the conformation of the endoplasmic reticulum and on starch accumulation in leaves with the symplastic minor-vein configuration. Planta 194, 443454.
  • Gear M.L., McPhillips M.L., Patrick J.W. & McCurdy D.W. (2000) Hexose transporters of tomato: molecular cloning, expression analysis and functional characterisation. Plant Molecular Biology 44, 687697.
  • Geiger D.R. (1975) Phloem loading. In Transport in Plants 1. Phloem Transport (eds M. H. Zimmerman & J. A. Milburn), pp. 395431. Springer-Verlag, Heidelberg, Germany.
  • Geiger D.R. & Cataldo D.A. (1969) Leaf structure and translocation in sugar beet. Plant Physiology 44, 4554.
  • Giaquinta R.T. (1976) Evidence for phloem loading from the apoplast. Chemical modification of membrane sulfhydryl groups. Plant Physiology 57, 872875.
  • Giaquinta R.T. (1983) Phloem loading of sucrose. Annual Review of Plant Physiology 34, 347387.
  • Giaquinta R.T., Lin W., Sadler N.L. & Franceschi V.R. (1983) Pathway of phloem unloading of sucrose in corn roots. Plant Physiology 72, 362367.
  • Gifford R.M. & Thorne J.H. (1985) Sucrose concentration at the apoplastic interface between seed coat and cotyledons of developing soybean seeds. Plant Physiology 77, 863868.
  • Goggin F.L., Medville R. & Turgeon R. (2001) Phloem loading in the tulip tree. Mechanisms and evolutionary implications. Plant Physiology 125, 891899.
  • Gottwald J.R., Krysan P.J., Young J.C., Evert R.F. & Sussman M.R. (2000) Genetic evidence for the in planta role of phloem-specific plasma membrane sucrose transporters. Proceedings of the National Academy of Science USA 97, 1397913984.
  • Grodzinski B., Jiao J. & Leonardos E.D. (1998) Estimating photosynthesis and concurrent export rates in C3 and C4 species at ambient and elevated CO2. Plant Physiology 116, 207215.
  • Hall J.L. & Williams L.E. (2000) Assimilate transport and partitioning in fungal biotrophic interactions. Australian Journal of Plant Physiology 27, 549560.
  • Haritatos E., Ayre B.G. & Turgeon R. (2000a) Identification of phloem involved in assimilate loading in leaves by the activity of the galactinol synthase promoter. Plant Physiology 123, 929937.
  • Haritatos E., Keller F. & Turgeon R. (1996) Raffinose oligosaccharide concentrations measured in individual cell and tissue types in Cucumis melo L. leaves: implications for phloem loading. Planta 198, 614622.
  • Haritatos E., Medville R. & Turgeon R. (2000b) Minor vein structure and sugar transport in Arabidopsis thaliana. Planta 211, 105111.
  • Harms K., Wohner R.V., Schulz B. & Frommer W.B. (1994) Isolation and characterisation of P-type H+-ATPase gene from potato. Plant Molecular Biology 26, 979988.
  • Harrington G.N., Franceschi V.R., Offler C.E., Patrick J.W., Tegeder M., Frommer W.B., Harper J.F. & Hitz W.D. (1997) Cell specific expression of three genes involved in plasma membrane sucrose transport in developing Vicia faba seed. Protoplasma 197, 160173.
  • Harrison M.J. (1999) Biotrophic interfaces and nutrient transport in plant/fungal symbioses. Journal of Experimental Botany 50, 10131022.
  • Haupt S., Duncan G.H., Holzberg S. & Oparka K.J. (2001) Evidence for symplastic phloem unloading in sink leaves of barley. Plant Physiology 125, 209218.
  • Hirner B., Fischer W.N., Rentsch D., Kwart M. & Frommer W.B. (1998) Developmental control of H+/ amino acid permease gene expression during seed development of Arabidopsis. Plant Journal 14, 535544.
  • Hoffmann-Thoma G., Van Bel A.J.E. & Ehlers K. (2001) Ultrastructure of minor-vein phloem and assimilate export in summer and winter leaves of the symplasmically loading evergreens. Ajuga reptans L., Aucuba japonica Thumb, and Hedera helix L. Planta 212, 231242.
  • Holdaway-Clarke T.L., Walker N.A., Hepler P.K. & Overall R.L. (2000) Physiological elevations in cytoplasmic free calcium by cold or ion injection result in transient closure of higher plant plasmodesmata. Planta 210, 329335.
  • Imlau A., Truernit E. & Sauer N. (1999) Cell-to-cell and long-distance trafficking of the green fluorescent protein in the phloem and symplastic unloading of the protein into sink tissues. Plant Cell 11, 309322.
  • Jeschke W.D. & Pate J.S. (1991) Modelling of the partitioning, assimilation and storage of nitrate within root and shoot organs of castor bean (Ricinus communis L.). Journal of Experimental Botany 42, 10911103.
  • Van Kesteren W.J.P., Van Der Schoot C. & Van Bel A.J.E. (1988) Symplastic transfer of fluorescent dyes from mesophyll to sieve tube in stripped leaf tissue and partly isolated minor veins of Commelina benghalensis. Plant Physiology 88, 667670.
  • Komor E. (2000) Source physiology and assimilate transport: the interaction of sucrose metabolism, starch storage and phloem export in source leaves and the effects on sugar status in plants. Australian Journal of Plant Physiology 27, 497505.
  • Koroleva O.A., Farrar J.F., Tomos A.D. & Pollock C.J. (1998) Carbohydrates in individual cells of epidermis, mesophyll, and bundle sheath in barley leaves with changes export on photosynthetic rate. Plant Physiology 118, 15251532.
  • Kühn C., Franceschi V.R., Schulz A., Lemoine R. & Frommer W.B. (1997) Macromolecular trafficking indicated by localisation and turnover of sucrose transporters in enucleate sieve elements. Science 275, 12981300.
  • Kühn C., Quick W.P., Schulz A., Riesmeier J.W., Sonnewald U. & Frommer W.B. (1996) Companion cell-specific inhibition of the potato sucrose transporter SUt1. Plant, Cell and Environment 19, 11151123.
  • Kuo J., O'Brien T.P. & Canny M.J. (1974) Pit-field distribution, plasmosdesmatal frequency, and assimilate flux in the mestome sheath cells of wheat leaves. Planta 121, 97118.
  • Laloi M., Delrot S. & M’Batchi B. (1993) Characterisation of sugar efflux from sugar beet leaf plasma membrane vesicles. Plant Physiology and Biochemistry 31, 731741.
  • Lanfermeijer F.C., Van Oene M.A. & Borstlap A.C. (1992) Compartmental analysis of amino-acid release from attached and detached pea seed coats. Planta 187, 7583.
  • Lang A. & Düring H. (1991) Partitioning control by water potential gradients: evidence for compartmentation breakdown in grape berries. Journal of Experimental Botany 42, 11171123.
  • Lansing A.J. & Franceschi V.R. (2000) The paraveinal mesophyll: a specialised path for intermediary transfer of assimilates in legume leaves. Australian Journal of Plant Physiology 27, 757767.
  • Lemoine R. (2000) Sucrose transporters in plants: update on function and structure. Biochimica et Biophysica Acta Biomembrane 1465, 246262.
  • Lemoine R.K., Kühn C., Thiele N., Delrot S. & Frommer W.B. (1996) Antisense inhibition of the sucrose transporter in potato: effects on amount and activity. Plant, Cell and Environment 19, 11241131.
  • Leonardos E.D. & Grodzinski B. (2000) Photosynthesis, immediate export and carbon partitioning in source leaves of C3, C3-C4 intermediate, and C4Panicum and Flaveria species at ambient and elevated CO2 levels. Plant, Cell and Environment 23, 839852.
  • Loescher W.H. & Everard J.D. (1996) Sugar alcohol metabolism in sinks and sources. In Photoassimilate Distribution in Plants and Crops. (eds E. Zamski & A. A. Schaffer), pp. 185208. Marcel Dekker Inc., New York, USA.
  • Lohaus G. & Moellers C. (2000) Phloem transport of amino acids in two Brassica napus L. genotypes and one B. Carinata genotype in relation to their seed protein content. Planta 211, 833840.
  • Lohaus G., Buker M., Hubman M., Soave C. & Heldt H.-W. (1998) Transport of amino acids with special emphasis on the synthesis and transport of aspargine in the Illinois low protein Illinois high proteins strains of maize. Planta 205, 181188.
  • Lohaus G., Winter H., Riens B. & Heldt H.W. (1995) Further studies of the phloem loading process in leaves of barley and spinach. The comparison of metabolite concentrations in the apoplastic compartment with those in the cytosolic compartment and in the sieve tubes. Botanica Acta 108, 270275.
  • Lucas W.J. (1985) Phloem-loading: A metaphysical phenomenon. In Regulation of Carbon Partitioning in Photosynthetic Tissue (eds R. L. Heath & J. Preiss), pp. 254272. American Society of Plant Physiologists, Rockville, MD, USA.
  • Lush W.M. (1976) Leaf structure and translocation of dry matter in a C3 and C4 grass. Planta 130, 235241.
  • Madore M.A. & Lucas W.J. (1987) Control of photoassimilate movement in source leaf tissues of Ipomoea tricolor cau. Planta 171, 197204.
  • Madore M.A., Oross J.W. & Lucas W.J. (1986) Symplastic transport in Ipomea tricolor source leaves. Plant Physiology 82, 432442.
  • Martinoia E., Massonneau A. & Frangne N. (2000) Transport processes of solutes across the vacuolar membrane of higher plants. Plant Cell Physiology 41, 11751186.
  • Meyer S., Melzer M., Truernit E.H., Hümmer C., Besenbeck R., Stadler R. & Sauer N. (2000) AtSUC3, a gene encoding a new Arabidopsis sucrose transporter, is expressed in cells adjacent to the vascular tissue and in a carpel cell layer. Plant Journal 24, 869882.
  • Mezitt-Provencher L., Miao L., Sinha N. & Lucas W.J. (2001) Sucrose export defective 1 encodes a novel protein implicated in chloroplast-to-nucleus signaling. Plant Cell 13, 11271141.
  • Moing A., Carbonne F., Zipperlin B., Svanella L. & Gaudillère J.P. (1997) Phloem loading in peach: Symplastic or apoplastic? Physiologia Plantarum 101, 489496.
  • Moing A., Escobar-Gutierrez A. & Gaudillère J.P. (1994) Modelling carbon export out of mature peach leaves. Plant Physiology 106, 591600.
  • Moorby J., Troughton J.H. & Currie B.G. (1974) Investigations of carbon transport in plants. II. The effects of light and darkness and sink activity on translocation. Journal of Experimental Botany 25, 937944.
  • Moore P.H. (1995) Temporal and spatial regulation of sucrose accumulation in the sugarcane stem. Australian Journal of Plant Physiology 22, 661679.
  • Münch E. (1930) Die Stoffbewegungen in der Pflanze. Fischer, Jena, Germany.
  • Murray D.R. (1987) Nutritive role of seed coats in developing legume seeds. American Journal of Botany 74, 11221137.
  • Ng C.K.Y. & Hew C.S. (1996) Pathway of phloem loading in C3 tropical orchid hybrid Oncidium goldiana. Journal of Experimental Botany 47, 19351940.
  • Noiraud N., Delrot S. & Lemoine R. (2000) The sucrose transporter of celery. Identification and expression during salt stress. Plant Physiology 122, 14471455.
  • Noiraud N., Maurousset L. & Lemoine R. (2001) Identification of a mannitol transporter, AgMaT1, in celery phloem. Plant Cell 13, 695705.
  • Offler C.E. & Horder B. (1992) The cellular pathway of short distance transfer of photoassimilates in developing tomato fruit. Plant Physiology 99S, 41.
  • Offler C.E. & Patrick J.W. (1984) Cellular structures, plasma membrane surface areas and plasmodesmatal frequencies of seed coats of Phaseolus vulgaris L. in relation to photosynthate transfer. Australian Journal of Plant Physiology 11, 7999.
  • Offler C.E. & Patrick J.W. (1993) Pathway of photosynthate transfer in the developing seed of Vicia faba L. A structural assessment of the role of transfer cells in unloading from the seed coat. Journal of Experimental Botany 44, 711724.
  • Oparka K.J. (1986) Phloem unloading in the potato tuber. Pathways and sites of ATPase. Protoplasma 131, 201210.
  • Oparka K.J. & Prior D.A.M. (1987) 14C sucrose efflux from the perimedulla of growing potato tubers. Plant, Cell and Environment 10, 667675.
  • Oparka K. & Prior D.A.M. (1992) Direct evidence for pressure-generated closure of plasmodesmata. Plant Journal 2, 741750.
  • Oparka K.J., Duckett C.M., Prior D.A.M. & Fisher D.B. (1994) Real-time imaging of phloem unloading in the root tip of Arabidopsis. Plant Journal 6, 759766.
  • Oparka K.J., Roberts A.G., Boevink P., Santa Cruz S., Roberts I., Pradel K.S., Imlau A., Kotlizky G., Sauer N. & Epel B. (1999) Simple, but not branched, plasmodesmata allow the nonspecific trafficking of proteins in developing tobacco leaves. Cell 97, 743754.
  • Ortiz-Lopez A., Chang H.-C. & Bush D.R. (2000) Amino acid transporters in plants. Biochimistry et Biophysica Acta Biomembrane 1465, 275280.
  • Orlich G., Hofbruckl M. & Schulz A. (1998) A symplasmic flow of sucrose contributes to phloem loading in Ricinus cotyledons. Planta 206, 108116.
  • Outlaw W.H., Fisher D.B. & Christy A.L. (1975) Compartmentation in Vicia faba leaves. II. Kinetics of 14C-sucrose redistribution among individual tissues following pulse labelling. Plant Physiology 55, 704711.
  • Pao S.S., Paulsen I.T. & Saier M.H. (1998) Major facilitator superfamily. Microbiology, Molecular Biology Review 62, 134.
  • Pate J.S. & Gunning B.E.S. (1969) Vascular transfer cells in angiosperm leaves. A taxonomic and morphological survey. Protoplasma 68, 135156.
  • Patrick J.W. (1987) Are hormones involved in assimilate transport? In Hormone Action in Plant Development – a Critical Appraisal. (eds G. V. Hoad, J. R. Lenton, M. B. Jackson & R. K. Atkin), pp. 175187. Butterworths, London, UK.
  • Patrick J.W. (1990) Sieve element unloading: cellular pathway, mechanism and control. Physiologia Plantarum 78, 298308.
  • Patrick J.W. (1993) Osmotic regulation of assimilate unloading from seed coats of Vicia faba. Role of turgor and indentification of turgor-dependent fluxes. Physiologia Plantarum 89, 8796.
  • Patrick J.W. (1994) Turgor-dependent unloading of assimilates from coats of developing legume seed. Assessment of the significance of the phenomenon in the whole plant. Physiologia Plantarum 90, 645654.
  • Patrick J.W. (1997) Phloem unloading: Sieve element unloading and post-sieve element transport. Annual Review of Plant Physiology and Plant Molecular Biology 28, 165190.
  • Patrick J.W. & Offler C.E. (1996) Post-sieve element transport of photoassimilate in sink regions. Journal of Experimental Botany 47, 11651177.
  • Patrick J.W. & Offler C.E. (2001) Compartmentation of transport and transfer events in developing seeds. Journal of Experimental Botany 52, 551564.
  • Patrick J.W., Offler C.E. & Wang X.-D. (1995) Cellular pathway of photosynthate transport in coats of developing seed of Vicia faba L. & Phaseolus vulgaris L. I. Extent of transport through the coat symplast. Journal of Experimental Botany 46, 3547.
  • Patrick J.W., Zhang W., Tyerman S.D., Offler C.E. & Walker N.A. (2001) Role of membrane transport in phloem translocation of assimilates and water. Australian Journal of Plant Physiology 28, 695707.
  • Paul M.J. & Foyer C.H. (2001) Sink regulation of photosynthesis. Journal of Experimental Botany 52, 13831401.
  • Porter G.A., Knievel D.P. & Shannon J.C. (1987) Assimilate unloading from maize (Zea Mays L.) Pedical tissues I. Evidence for regulation of unloading by cell turgor. Plant Physiology 83, 131136.
  • Pritchard J. (1996) Aphid stylectomy reveals an osmotic step between sieve tube and cortical cells in barley roots. Journal of Experimental Botany 47, 15191524.
  • Pritchard J., Winch S. & Gould N. (2000) Phloem water relations and root growth. Australian Journal of Plant Physiology 27, 539548.
  • Quick P.W. & Schaffer A.A. (1996) Sucrose metabolism in sinks and sources. In Photoassimilate Distribution in Plants and Crops, Source–Sink Relationships. (eds E. Zamski & A. Schaffer), pp. 407420. Marcel Dekker Inc, New York, USA.
  • Riesmeier J.W., Hirner B. & Frommer W.B. (1993) Potato sucrose transporter expression in minor veins indicate a role in phloem loading. Plant Cell 5, 15911598.
  • Riesmeier J.W., Willmitzer L. & Frommer W.B. (1994) Evidence for an essential role of the sucrose transporter in phloem loading and assimilate partitioning. EMBO Journal 13, 17.
  • Roberts A.G., Santa Cruz S., Roberts I.M., Prior D.A.M., Turgeon R. & Oparka K.J. (1997) Phloem unloading in sink leaves of Nicotiana benthamiana: comparison of a fluorescent solute with a fluorescent virus. Plant Cell 9, 13811396.
  • Roblin G., Sakr S., Bonmort J. & Delrot S. (1998) Regulation of a plant plasma membrane sucrose transporter by phosphorylation. FEBS Letters 424, 165168.
  • Rochat C. & Boutin J.P. (1991) Metabolism of phloem-borne amino acids in maternal tissues of fruit of nodulated or nitrate-fed pea plants (Pisum sativum L.). Journal of Experimental Botany 42, 207215.
  • Roitsch T. & Ehneβ R. (2000) Regualtion of source/sink relations by cytokinins. Plant Growth Regulation 32, 359367.
  • Roitsch T., Ehneβ R., Goetz M., Hause B., Hofmann M. & Sinha A.K. (2000) Regulation and function of extracellular invertase from higher plants in relation to assimilate partitioning, stress responses and sugar signalling. Australian Journal of Plant Physiology 27, 815825.
  • Rosche E., Blackmore D., Tegeder M., Richardson T., Schroeder H., Higgins T.J.V., Frommer W.B., Offler C.E. & Patrick J.W. (2002) Seed-specific overexpression of a potato sucrose transporter increases sucrose uptake and growth rates of developing pea cotyledons. Plant Journal 30, in press.
  • Ruan Y.-L. & Patrick J.W. (1995) The cellular pathway of postphloem sugar transport in developing tomato fruit. Planta 196, 434444.
  • Ruan Y.-L., Patrick J.W. & Brady C.J. (1997) Protoplast hexose carrier activity is a determinate of genotypic difference in hexose storage in tomato fruit. Plant, Cell and Environment 20, 341349.
  • Ruan Y.-L., Llewellyn D.J. & Furbank R.T. (2001) The control of single-celled cotton fibre elongation by developmentally reversible gating of plasmodesmata and coordinated expression of sucrose and K+ transporters and expansin. Plant Cell 13, 4760.
  • Ruiz-Medrano R., Xoconostle-Cázares B. & Lucas W.J. (1999) Phloem long-distance transport of CmNACP mRNA: Implications for supracellular regulation in plants. Development 126, 44054419.
  • Russin W.A., Evert R.F., Vanderveer P.J., Sharkey T.D. & Briggs S.P. (1996) Modification of a specific class of plasmodesmata and loss of sucrose export ability in the sucrose export defective1 maize mutant. Plant Cell 8, 645658.
  • Sauer N. & Stadler R. (1993) A sink-specific H+/monosaccharide co-transporter from Nicotiana tabacum: cloning and heterologous expression in baker's yeast. Plant Journal 4, 601610.
  • Schmalstig J.G. & Cosgrove D.J. (1990) Coupling of solute transport and cell expansion in pea stems. Plant Physiology 94, 16251634.
  • Schmalstig J.G. & Geiger D.R. (1985) Phloem unloading in developing leaves of sugar beet. I. Evidence for pathway through the symplast. Plant Physiology 79, 237241.
  • Schobert C., Zhong W.-J. & Komor E. (1998) Inorganic ions modulate the path of phloem loading of sucrose in Ricinus communis L. seedlings. Plant, Cell and Environment 21, 10471054.
  • Schulz A. (1994) Phloem transport and differential unloading in pea seedlings after source and sink manipulations. Planta 192, 239249.
  • Schulz A. (1995) Plasmodesmatal widening accompanies the short-term increase in symplastic phloem unloading in pea root tips under osmotic stress. Protoplasma 188, 2237.
  • Schulz A. (1998) Phloem. Structure related to function. Cell Biology and Physiology 59, 429475.
  • Schulz A. (1999) Physiological control of plasmodesmal gating. In Plasmodesmata. Structure, Function, Role in Cell Communication. (eds A. J. E. van Bel & W. J. P. van Kestren), pp. 173204. Springer-Verlag, Berlin, Germany.
  • Schulze W., Weise A., Frommer W.B. & Ward J.M. (2000) Function of the cytosolic N-terminus of sucrose transporter AtSUT2 in substrate affinity. FEBS Letters 485, 189194.
  • Servaites J.C., Schrader L.E. & Jung D.M. (1979) Energy-dependent loading of amino acids and sucrose into the phloem of soybean. Plant Physiology 64, 546550.
  • Smith J.A.C. & Milburn J.A. (1980a) Osmoregulation and the control of phloem-sap composition in Ricinus communis L. Planta 148, 2834.
  • Smith J.A.C. & Milburn J.A. (1980b) Phloem transport, solute flux and kinetics of sap exudation in Ricinus communis L. Planta 148, 3541.
  • Smith J.A.C. & Milburn J.A. (1980c) Phloem turgor and the regulation of sucrose loading in Ricinus communis L. Planta 148, 4248.
  • Smith S.E., Dickson S. & Smith F.A. (2001) Nutrient transfer in arbuscular mycorrhizas: how are fungal and plant processes integrated? Australian Journal of Plant Physiology 28, 683694.
  • Stadler R. & Sauer N. (1996) The Arabidopsis thaliana AtSUC2 gene is specifically expresed in companion cells. Botanica Acta 109, 209306.
  • Stadler R., Brandner J., Schulz A., Gahrtz M. & Sauer N. (1995) Phloem loading by the PmSUC2 sucrose carrier from Plantago major occurs into companion cells. Plant Cell 7, 15451554.
  • Sweetlove L.J. & Hill S.A. (2000) Source metabolism dominates the control of source to sink carbon flux in tuberising potato plants throughout the diurnal cycle and under a range of environmental conditions. Plant, Cell and Environment 23, 525533.
  • Sze H., Li X. & Palmgren M.G. (1999) Energisation of plant cell membranes by H+-pumping ATPases: regulation and biosynthesis. Plant Cell 11, 677689.
  • Tang G.-Q., Luscher M. & Sturm A. (1999) Antisence repression of vacuolar and cell wall invertase in transgenic carrot alters early plant development and sucrose partitioning. Plant Cell 11, 177189.
  • Tegeder M., Thomas M., Hetherington L., Wang X.-D., Offler C.E. & Patrick J.W. (2000a) Genotypic differences in seed growth rates of Phaseolus vulgaris L. II. Factors contributing to cotyledon sink activity and sink size. Australian Journal of Plant Physiology 27, 119128.
  • Tegeder M., Offler C.E., Frommer W.B. & Patrick J.W. (2000b) Amino acid transporters are localised to transfer cells of developing pea seeds. Plant Physiology 122, 319325.
  • Tegeder M., Wang X.-D., Frommer W.B., Offler C.E. & Patrick J.W. (1999) Sucrose transport into developing seeds of Pisum sativum L. Plant Journal 18, 151161.
  • Tetlow I.J. & Farrar J.F. (1993) Apoplastic sugar concentration and pH in barley leaves infected with brown rust. Journal of Experimental Botany 44, 929937.
  • Thomas P.A., Felker F.C. & Crawford C.G. (1992) Sugar uptake and metabolism in the developing endosperm of Tassel seed Tunicate (Ts-5Tu). Plant Physiology 99, 15401546.
  • Thomas M., Hetherington L. & Patrick J.W. (2000) Genotypic differences in seed growth rates of Phaseolus vulgaris L. General characteristics, seed coat factors and comparative roles of seed coats and cotyledons. Australian Journal of Plant Physiology 27, 109118.
  • Thompson R.G. & Dale J.E. (1981) Export of 14C and 11C labelled assimilate from wheat and maize leaves: effects of parachloromercurobenzylsulfonic acid and fusicoccin and of potassium deficiency. Canadian Journal of Botany 59, 24392444.
  • Truernit E. & Sauer N. (1995) The promoter of the Arabidopsis thaliana SUC 2 sucrose-H+ symporter gene directs expression of β-glucuronidase to the phloem: evidence for phloem loading by SUC2. Planta 196, 564570.
  • Tucker E.B. & Tucker J.E. (1993) Cell-to-cell diffusion selectivity in staminal hairs of Setcreasea purpurea. Protoplasma 174, 3645.
  • Turgeon R. (1987) Phloem unloading in tobacco sink leaves: insensitivity to anoxia indicates a symplastic pathway. Planta 171, 7381.
  • Turgeon R.T. (1989) The sink-source transition in leaves. Annual Review of Plant Physiology and Plant Molecular Biology 40, 119138.
  • Turgeon R. (1996) Phloem loading and plasmodesmata. Trends in Plant Science 1, 418423.
  • Turgeon R. (2000) Plasmodesmata and solute exchange in the phloem. Australian Journal of Plant Physiology 27, 521529.
  • Turgeon R. & Gowan E. (1990) Phloem loading in Coleus blumei in the absence of carrier-mediated uptake of export sugar from the apoplast. Plant Physiology 94, 12441249.
  • Turgeon R. & Hepler P.K. (1989) Symplastic continuity between mesophyll and companion cells in minor veins of mature Cucurbita pepo L. leaves. Planta 179, 2431.
  • Turgeon R. & Medville R. (1998) The absence of phloem loading in willow leaves. Proceedings of National Academy of Science USA 95, 1205512060.
  • Turgeon R. & Wimmers L.E. (1988) Different patterns of vein loading of exogenous (14C) -sucrose in leaves of Pisum sativum and Coleus blumei. Plant Physiology 87, 179182.
  • Viola R., Roberts A.G., Haupt S., Gazzani S., Hancock R.D., Marmiroli N., Machray G.C. & Oparka K.J. (2001) Tuberisation in potato involves a switch from apoplastic to symplastic phloem unloading. Plant Cell 13, 385398.
  • Voitsekhovskaja O.V., Pakhomova M.V., Syutkina A.V., Gamalei Y.V. & Heber U. (2000) Compartmentation of assimilate fluxes in leaves. II. Apoplastic sugar levels in leaves of plants with different companion cell types. Plant Biology 2, 107112.
  • Walker N.A., Patrick J.W., Zhang W.-H. & Fieuw S. (1995) Efflux of photosynthate and acid from developing seed coats of Phaseolus vulgaris L.: a chemiosmotic analysis of pump-derived efflux. Journal of Experimental Botany 46, 539549.
  • Walker N.A., Zhang W.-H., Harrington G., Holdaway N. & Patrick J.W. (2000) Effluxes of solutes from developing seed coats of Phaseolus vulgaris L. & Vicia faba L.: locating the effect of turgor in a coupled chemiosmotic system. Journal of Experimental Botany 51, 10471056.
  • Wang N. & Fisher D.B. (1994a) Monitoring phloem unloading and post-phloem transport by microperfusion of attached wheat grains. Plant Physiology 104, 717.
  • Wang N. & Fisher D.B. (1994b) The use of fluorescent tracers to characterise the post-phloem transport pathway in maternal tissues of developing wheat grains. Plant Physiology 104, 1727.
  • Wang N. & Fisher D.B. (1995) Sucrose release into the endosperm cavity of wheat grains apparently occurs by facilitated diffusion across the nucellar cell membranes. Plant Physiology 109, 579586.
  • Wang H.L., Offler C.E. & Patrick J.W. (1995a) Cellular pathway of photosynthate transfer in the developing wheat grain. II. A structural analysis and histochemical studies of the transfer pathway from the crease phloem to the endosperm cavity. Plant, Cell and Environment 18, 373388.
  • Wang H.L., Offler C.E., Patrick J.W. & Ugalde T.D. (1994) The cellular pathway of photosynthate transfer in the developing wheat grain. I. Delineation of a potential transfer pathway using fluorescent dyes. Plant, Cell and Environment 17, 257266.
  • Wang H.L., Patrick J.W., Offler C.E. & Wang X.-D. (1995b) The cellular pathway of photosynthate transfer in the developing wheat grain. III. A structural analysis and physiological studies of the pathway from the endosperm cavity to the starchy endosperm. Plant, Cell and Environment 18, 389407.
  • Wardlaw I.F. (1990) The control of carbon partitioning in plants. New Phytologist 116, 341381.
  • Warmbrodt R.D. (1987) Solute concentrations in the phloem and apex of the root Zea mays. American Journal of Botany 74, 394402.
  • Weber H., Borisjuk L., Sauer N. & Wobus U. (1997) A role for sugar transporters during seed development: molecular characterisation of a hexose and a sucrose carrier in Faba bean seeds. Plant Cell 9, 895908.
  • Weber A., Servaites J.C., Geiger D.R., Kofler H., Hille D., Groner F., Hebbeker U. & Flügge U.-I. (2000) Identification, purification, and molecular cloning of a putative plastidic glucose translocator. Plant Cell 12, 787801.
  • Weise A., Barker L.K., Kühn C., Lalonde S., Buschmann H., Frommer W.B. & Ward J.M. (2000) A new subfamily of sucrose transporters, SUT4, with low affinity/high capacity localised in enucleate sieve elements of plants. Plant Cell 12, 13451355.
  • Weston K., Hall J.L. & Williams L.E. (1995) Characterisation of amino-acid transport in Ricinus communis roots using isolated membrane vesicles. Planta 196, 166174.
  • Williams L.E. & Miller A.J. (2001) Transporters responsible for the uptake and partitioning of nitrogenous solutes. Annual Review of Plant Physiology and Plant Molecular Biology 52, 659688.
  • Williams J.H.H., Minchin P.E.H. & Farrar J.F. (1991) Carbon partitioning in split root systems of barley: the effect of osmotica. Journal of Experimental Botany 42, 453461.
  • Wimmers L.E. & Turgeon R. (1991) Transfer cells and solute uptake in minor veins of Pisum sativum leaves. Planta 186, 213.
  • Winch S. & Pritchard J. (1999) Acid-induced wall loosening is confined to the accelerating region of the root growing zone. Journal of Experimental Botany 50, 14811488.
  • Winkler R.G., Blevins D.G., Polacco J.C. & Randall D.D. (1988) Ureide catabolism in nitrogen fixing legumes. Trends in Biochemical Science 13, 97100.
  • Winter H., Robinson D.G. & Heldt H.W. (1993) Subcellular volumes and metabolite concentrations in barley leaves. Planta 191, 180191.
  • Wipf D., Ludewig U., Tegeder M., Rentsch D., Koch W. & Frommer W.B. (2002) Amino acid transporters are highly conserved between fungi, plants, and animals. Trends in Biochemical Sciences 27, 148153.
  • Wolswinkel P. (1992) Transport of nutrients into developing seeds: a review of physiological mechanisms. Seed Science Research 2, 5973.
  • Wright K.M. & Oparka K.J. (1996) The fluorescent probe HPTS as a phloem-mobile, symplastic tracer: an evaluation using confocal laser scanning microscopy. Journal of Experimental Botany 47, 421430.
  • Wylie R.B. (1939) Relations between tissue organisation and vein distribution in dicotyledon leaves. American Journal of Botany 26, 219225.
  • Xia J. & Saglio H. (1988) Characterization of the hexose transport system in maize root tips. Plant Physiology 88, 10151020.
  • Yuasa T., Okazaki Y., Iwasaki N. & Muto S. (1997) Involvement of a calcium-dependent protein kinase in hypoosmotic turgor regulation in a brackish water Characeae Lamprothamnium succinctum. Plant and Cell Physiology 38, 586594.
  • Zhang W.-H., Skerrett M.N., Walker N.A., Patrick J.W. & Tyerman S.D. (2002) Non-selective channels in plasma membranes of protoplasts derived from coats of developing seeds of Phaseolus vulgaris L. Plant Physiology 128, 388399.
  • Zhu T., Lucas W.J. & Rost T.L. (1998) Direction cell-to-cell communication in the Arabidopsis root apical meristem. I. An ultrastructural and functional analysis. Protoplasma 203, 3547.
  • Zimmermann M.H. & Ziegler H. (1975) List of sugars and sugar alcohols in sieve-tube exudates. In Transport in Plants: Phloem Transport (eds M. H. Zimmermann & J. A. Milburn), pp. 480503. Springer-Verlag, Heidelberg, Germany.
  • Zrenner R., Salanoubat M., Willmitzer L. & Sonnewald U. (1995) Evidence of the crucial role of sucrose synthase for sink strength using transgenic potato plants (Solanum tuberosum L.). Plant Journal 7, 97107.