Search Results - "Wegner, L H"

Towards a medically approved technology for alginate-based microcapsules allowing long-term immunoisolated transplantation by Zimmermann, H, Zimmermann, D, Reuss, R, Feilen, P J, Manz, B, Katsen, A, Weber, M, Ihmig, F R, Ehrhart, F, Gessner, P, Behringer, M, Steinbach, A, Wegner, L H, Sukhorukov, V L, Vásquez, J A, Schneider, S, Weber, M M, Volke, F, Wolf, R, Zimmermann, U

“…The concept of encapsulated-cell therapy is very appealing, but in practice a great deal of technology and know-how is needed for the production of long-term…”
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Properties of two outward-rectifying channels in root xylem parenchyma cells suggest a role in K+ homeostasis and long-distance signaling by Wegner, L.H, Boer, A.H. de

“…Xylem parenchyma cells (XPCs) control the composition of the transpiration stream in plants and are thought to play a role in long-distance signaling as well…”
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Distribution and function of epistomatal mucilage plugs by Westhoff, M, Zimmermann, D, Zimmermann, G, Gessner, P, Wegner, L. H, Bentrup, F.-W, Zimmermann, U

“…Investigation of 67 gymnosperm and angiosperm species belonging to 25 orders shows that epistomatal mucilage plugs are a widespread phenomenon. Measurements of…”
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Foliar water supply of tall trees: evidence for mucilage-facilitated moisture uptake from the atmosphere and the impact on pressure bomb measurements by Zimmermann, D, Westhoff, M, Zimmermann, G, Geßner, P, Gessner, A, Wegner, L. H, Rokitta, M, Ache, P, Schneider, H, Vásquez, J. A, Kruck, W, Shirley, S, Jakob, P, Hedrich, R, Bentrup, F.-W, Bamberg, E, Zimmermann, U

“…The water supply to leaves of 25 to 60 m tall trees (including high-salinity-tolerant ones) was studied. The filling status of the xylem vessels was determined…”
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Turgor pressure changes trigger characteristic changes in the electrical conductance of the tonoplast and the plasmalemma of the marine alga Valonia utricularis by HEIDECKER, M., WEGNER, L. H., BINDER, K.‐A., ZIMMERMANN, U.

“…ABSTRACT The giant marine alga Valonia utricularis is capable of regulating its turgor pressure in response to changes in the osmotic pressure of the sea…”
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Ion channels in the xylem parenchyma of barley roots. A procedure to isolate protoplasts from this tissue and a patch-clamp exploration of salt passageways into xylem vessels by Wegner, L.H, Raschke, K

“…To identify mechanisms for the simultaneous release of anions and cations into the xylem sap in roots, we investigated voltage-dependent ion conductances in…”
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Regulatory mechanisms of ion channels in xylem parenchyma cells by de Boer, A.H., Wegner, L.H.

“…Xylem parenchyma cells surround the xylem vessels and control the composition of the transpiration stream which flows through the vessels. In the plasma…”
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Simultaneous recording of xylem pressure and trans‐root potential in roots of intact glycophytes using a novel xylem pressure probe technique by Wegner, L. H., Zimmermann, U.

“…The radial electrical potential difference between the root xylem and the bathing solution, i.e. the so‐called trans‐root potential, was measured in intact…”
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Effects of environmental parameters and irrigation on the turgor pressure of banana plants measured using the non-invasive, online monitoring leaf patch clamp pressure probe by Zimmermann, U., Rüger, S., Shapira, O., Westhoff, M., Wegner, L. H., Reuss, R., Gessner, P., Zimmermann, G., Israeli, Y., Zhou, A., Schwartz, A., Bamberg, E., Zimmermann, D.

“…Turgor pressure provides a sensitive indicator for irrigation scheduling. Leaf turgor pressure of Musa acuminate was measured by using the so-called leaf patch…”
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Impact of hypoosmotic challenges on spongy architecture of the cytoplasm of the giant marine alga Valonia utricularis by Mimietz, S, Heidecker, M, Krohne, G, Wegner, L-H, Zimmermann, U

“…The ultrastructure of the several micrometers thick cytoplasmic layer of the giant marine alga Valonia utricularis displays characteristics which are…”
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Structural peculiarities dominate the turgor pressure response of the marine alga Valonia utricularis upon osmotic challenges by Heidecker, M, Mimietz, S, Wegner, L H, Zimmermann, U

“…The pressure response of (plant) cells to osmotic challenges depends on the reflection coefficient, sigma, of osmotically active solutes; it is less than…”
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A non-invasive probe for online-monitoring of turgor pressure changes under field conditions by Westhoff, M., Reuss, R., Zimmermann, D., Netzer, Y., Gessner, A., Geßner, P., Zimmermann, G., Wegner, L. H., Bamberg, E., Schwartz, A., Zimmermann, U.

“…An advanced non-invasive, field-suitable and inexpensive leaf patch clamp pressure probe for online-monitoring of the water relations of intact leaves is…”
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Trans‐root potential, xylem pressure, and root cortical membrane potential of ‘low‐salt’ maize plants as influenced by nitrate and ammonium by Wegner, L. H., Sattelmacher, B., Läuchli, A., Zimmermann, U.

“…ABSTRACT Upon addition of nitrate and ammonium, respectively, to the bath of intact ‘low salt’ maize plants, the cortical membrane potential and the trans‐root…”
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Gating of Cl- currents in protoplasts from the marine alga Valonia utricularis depends on the transmembrane Cl- gradient and is affected by enzymatic cell wall degradation by Binder, K-A, Wegner, L H, Heidecker, M, Zimmermann, U

“…The electrical properties of protoplasts of the turgor pressure-regulating giant marine alga Valonia utricularis were investigated by using the patch-clamp…”
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Properties of the K+ inward rectifier in the plasma membrane of xylem parenchyma cells from barley roots: effects of TEA+, Ca2+, Ba2+ and La3 by Wegner, L.H. (Vrije Universiteit Amsterdam, Amsterdam, The Nethelands), Boer, A.H. de, Raschke, K

“…Xylem parenchyma cells are situated around the (apoplastic) xylem vessels and are involved in the control of the composition of the xylem sap by exporting and…”
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The mechanisms of refilling of xylem conduits and bleeding of tall birch during spring by Westhoff, M., Schneider, H., Zimmermann, D., Mimietz, S., Stinzing, A., Wegner, L.H., Kaiser, W., Krohne, G., Shirley, St, Jakob, P., Bamberg, E., Bentrup, F.-W., Zimmermann, U.

“…Seasonal variations in osmolality and components of xylem sap in tall birch trees were determined using several techniques. Xylem sap was extracted from branch…”
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A patch-clamp study of ion channels in protoplasts prepared from the marine alga Valonia utricularis by Heidecker, M, Wegner, L H, Zimmermann, U

“…The giant marine alga Valonia utricularis is a classical model system for studying the electrophysiology and water relations of plant cells by using…”
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Activation kinetics of the K+ outward rectifying conductance (KORC) in xylem parenchyma cells from barley roots by Wegner, L.H, Boer, A.H. de

“…The activation kinetics of outward currents in protoplasts from barley root xylem parenchyma was investigated using the patch-clamp technique. The K(+) outward…”
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Evidence for discontinuous water columns in the xylem conduit of tall birch trees by Westhoff, M., Zimmermann, D., Schneider, H., Wegner, L. H., Geßner, P., Jakob, P., Bamberg, E., Shirley, St, Bentrup, F.-W., Zimmermann, U.

“…The continuity of the xylem water columns was studied on 17- to 23-m tall birch trees (trunk diameter about 23 cm; first branching above 10 m) all year round…”
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Two inward K(+) channels in the xylem parenchyma cells of barley roots are regulated by G-protein modulators through a membrane-delimited pathway by Wegner, L.H, Boer, A.H. de

“…In order to study the mechanism and regulation of K+ resorption from the xylem by the cells that border the xylem vessels (the xylem parenchyma cells), K+…”
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