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A non-invasive measurement of phloem and xylem water flow in castor bean seedlings by nuclear magnetic resonance microimaging

W. Kockenberger ; J. Pope ; Y. Xia ; K. Jeffrey ; E. Komor ; P. Callaghan | 1997

A flow-sensitive nuclear magnetic resonance (NMR) microimaging technique was applied to measure directly the in-vivo water flow in 6-d-old castor bean seedlings. The achieved in-plane resolution of the technique allowed discrimination between xy[...]

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Phloem loading - Not metaphysical, only complex: Towards a unified model of phloem loading

E. Komor ; G. Orlich ; A. Weig ; W. Kockenberger | 1996

Phloem loading comprises the entire pathway of phloem-mobile solutes from their place of generation (or delivery) to the sieve tubes in a sequence of transport steps across or passing by several different cell types. Each of these steps can be c[...]

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The kinetics of sucrose concentration in the phloem of individual vascular bundles of the Ricinus communis seedling measured by nuclear magnetic resonance microimaging

J. Verscht ; B. Kalusche ; J. Kohler ; W. Kockenberger ; A. Metzler ; A. Haase ; E. Komor | 1998

The sucrose concentration was measured at 70-min intervals in the phloem of individual bundles of the hypocotyl of Ricinus seedlings by H-1 nuclear magnetic resonance (NMR) spectroscopic imaging. The sucrose concentration stayed fairly constant [...]

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