Abstract
PREVIOUS investigations of differences in nutrient uptake along plant roots occurring during short intervals of time have recorded sites of influx, but to obtain net flux it is also necessary to study efflux1. This has been done in current studies of ion uptake along roots of Pinus radiata seedlings, and findings on the loss of chloride at different parts of the root are presented here. This seems to be the first such study with inorganic ions. Qualitative and semi-quantitative studies of organic exudates2–4 have variously reported the zone of elongation of roots, sites of lateral emergence and older parts of roots to be the most important areas of loss.
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References
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Bowen, G. D., and Rovira, A. D., Austral. J. Biol. Sci., 20, 369 (1967).
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BOWEN, G. Chloride Efflux along Pinus radiata Roots. Nature 218, 686–687 (1968). https://doi.org/10.1038/218686a0
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DOI: https://doi.org/10.1038/218686a0
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