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. 1985 Nov;48(5):687–694. doi: 10.1016/S0006-3495(85)83826-1

A theory and a model for interpreting the proton nuclear magnetic resonance spectra of water in plant leaves.

D C McCain, J L Markley
PMCID: PMC1329393  PMID: 4074830

Abstract

Some plant leaves display complex, orientation-dependent, proton nuclear magnetic resonance (1H NMR) spectra. The spectral patterns vary as the angle between the leaf surface and the applied magnetic field is varied. They also vary with temperature and with the quantity of absorbed manganous ions, but they are independent of magnetic field strength. In this paper, we propose a theory to explain the origin of the spectra and a model from which the patterns can be calculated. The theory shows how heterogeneous magnetic susceptibilities and local dipolar magnetic fields in chloroplasts can shift the water-proton resonance field. The model describes a simplified leaf structure in which the chloroplasts are nonrandomly aligned with respect to the leaf surface. Model calculations are tested by comparison with experimental spectra from hawthorn leaves (Crataegus sp.).

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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