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. 1987 Oct;85(2):331–334. doi: 10.1104/pp.85.2.331

Quantitative Estimates of Phosphorus Concentrations within Lupinus luteus Leaflets by Means of Electron Probe X-ray Microanalysis 1

Michael T Treeby 1,2, Reinhard F M van Steveninck 1, Hilde M de Vries 1
PMCID: PMC1054255  PMID: 16665697

Abstract

Phosphorus contents of epidermal vacuoles and mesophyll cells of Lupinus lutens leaflets were measured by electron probe x-ray microanalysis of fully hydrated, bulk frozen samples. Quantitation was achieved using standard solutions containing colloidal graphite to simulate cell contents and the derived nonlinear relationship between peak over background ratio and concentration improved the accuracy of the analytical procedure. Inorganic phosphate contents of mesophyll cells were shown to be highly dependent on phosphate nutrition. Comparison with data obtained from conventional analysis leads to the suggestion that in heterogeneous tissues the inorganic phosphate concentrations of the cytoplasm may show greater variation than observed in the cytoplasm of simple plant systems such as cell suspension and root tips.

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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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