Enhancement of Phloem exudation from cut petioles by chelating agents.

@article{King1974EnhancementOP,
  title={Enhancement of Phloem exudation from cut petioles by chelating agents.},
  author={Rod W. King and Jan A. D. Zeevaart},
  journal={Plant physiology},
  year={1974},
  volume={53 1},
  pages={
          96-103
        }
}
The photosynthetic assimilates in leaves of Perilla crispa attached to the plant were labeled by treating the leaves with (14)CO(2). When subsequently detached, these leaves exuded a negligible amount of radioactivity from the cut petiole into water. Ethylenediaminetetraacetate (EDTA), citric acid, and ethyleneglycol-bis (beta-aminoethyl ether) N,N'-tetraacetate greatly increased exudation of labeled assimilates into a solution bathing the petioles. The optimal concentration of EDTA was 20 mm… CONTINUE READING
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