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© 1987 Oxford University Press

RESEARCH-ARTICLE

High Resolution Imaging of Plant Tissues10

A. CONNELLY1, J. A. B. LOHMAN1,, B. C. LOUGHMAN2, H. QUIQUAMPOIX2 3 and R. G. RATCLIFFE2,

1Oxford Research Systems Limited Nuffield Way, Abingdon, Oxon. 0X14 1RY, U.K.
2Department of Plant Sciences, University of Oxford, Agricultural Science Building Parks Road, Oxford 0X1 3PF, U.K.

Author to whom correspondence should be addressed

Connelly, A., Lohman, J. A. B., Loughman, B. C., Quiquampoix, H. and Ratcliffe, R. G. 1987. High resolution imaging of plant tissues by NMR.—J. exp. Bot. 38: 1713–1723.

NMR images of living plant tissues were recorded at a 1H frequency of 200 MHz using a high resolution imaging technique that gave an in-plane pixel resolution of 50 µm x 50 µm or better. Images with interpretable contrast were obtained from germinating seeds, the roots of seedlings and the stems of young plants. The expected structural features of these tissues were readily observed including, in Mn2+ loaded tissue, the xylem vessels of maize root sections. Preliminary experiments on H2O-D2O exchange in maize roots, on the uptake of Mn2+ by maize roots and on the germination of seeds in situ demonstrate that the non-invasive method of NMR mini-imaging has the potential to complement existing techniques for physiological investigations in plant tissues.

Key words: NMR imaging, water content, ion uptake


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