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. 1968 Nov;43(11):1747–1754. doi: 10.1104/pp.43.11.1747

Determination of Root Exudates in a Steril Continuous Flow Culture. II. Short-Term and Long-Term Variations of Exudation Intensity 1

Martin Richter 1, Werner Wilms 1, Fritz Scheffer 1
PMCID: PMC1087074  PMID: 16656967

Abstract

The exudate production of alfalfa under the conditions of the sterile flow culture was quantitatively measured. In the first 40 days 3.10−3 μmoles amino-N, 2.5 μequivalents of organic acids and approximately 10−4 μmoles of reducing sugars were liberated per plant and per day into the percolating nutrient solution. The amino acid concentration in the outflow varies according to a daily periodicity. The exudation of a colored substance also shows daily periodical variations. This pattern is different from the pattern of the amino acid exudation, however, and directly coupled to shoot illumination. Short-term 2,4-dinitrophenol additions to the nutrient lower the liberation of amino acids into the percolating solution.

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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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