Positron Emitting Radiotracers for in Vivo Plant Research

  • Ali M. Emran
  • Yohanna Fares
  • John D. Goeschl
  • Malcolm C. Drew


Physiological studies in plants have been carried out to determine certain metabolic pathways along with mode of transport of major nutrients in various species. The question whether photosynthesis or translocation controls carbon partitioning and hence productivity is of great agronomic importance, because many efforts are directed at selecting plant varieties with high rates of photosynthesis via genetic engineering and/or selective breeding (1). Concepts were introduced and verified on engineering the photosynthetic productivity and carbon dioxide involvement (2). As well, nitrogen abundance and deficiency were studied (3). Studies on such physiological parameters in plants advanced greatly because of the introduction of tracer methodology including nuclear magnetic resonance (NMR), using 14N-NMR (4), stable isotopes such as 15N with mass spectrometry (5) or radioactive isotopes with radiation detection (6). By use of short-lived positron emitting isotopes, such as 11C and 13N, coupled with time-dependent and steady-state compartmental kinetic models, such dynamic biophysical plant problems are being unravelled.


Phloem Transport Target Water Nitrogen Abundance Proton Bombardment Tracer Methodology 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • Ali M. Emran
    • 1
  • Yohanna Fares
    • 2
  • John D. Goeschl
    • 3
  • Malcolm C. Drew
    • 4
  1. 1.Positron Diagnostic and Research CenterThe University of Texas Health Science CenterHoustonUSA
  2. 2.Department of Biophysics, School of MedicineUnited Arab Emirates UniversityAl-AinUAE
  3. 3.Biosystems Technologies, Inc.DurhamUSA
  4. 4.Department of HorticultureTexas A&M UniversityCollege StationUSA

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