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The influence of dinitrophenol on phloem transport along the stolon of Saxifraga sarmentosa

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Summary

Dinitrophenol in concentrations of 5×10-3 M applied to the centre 30 cm of 60–70 cm stolons of Saxifraga produces a strong and reversible inhibition of the phloem transport of 137Cs or 14C-assimilates. There is every reason to believe that this effect is localised in the sieve tubes; callose formation does not occur. This evidence is very difficult to reconcile with the Münch hypothesis; it seems on the contrary to demand a theory of active pumping.

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References

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Authors and Affiliations

  1. Botany Department, Bedford College, NW1 4NS, London, U.K.

    F. A. Qureshi & D. C. Spanner

Authors
  1. F. A. Qureshi
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  2. D. C. Spanner
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This work formed part of that submitted for the degree of Ph.D. of London University.

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Qureshi, F.A., Spanner, D.C. The influence of dinitrophenol on phloem transport along the stolon of Saxifraga sarmentosa . Planta 111, 1–12 (1973). https://doi.org/10.1007/BF00386729

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  • DOI: https://doi.org/10.1007/BF00386729

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