Summary
The presence of a mucilaginous layer adhering to the epidermal cells of young citrus roots was noted. Washing the roots with 1N NH4Cl for 1 minute removed this layer and the micro-organisms embedded in it. Chemical analysis of this extract yielded from 2–20% of the total specific root cations. It is thought that the mucilagenous layer and associated micro-organisms are a part of the rhizopshere and can act as a reservoir and supply of nutrients for the plant.
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References
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Brams, E. The mucilaginous layer of citrus roots — Its delineation in the rhizosphere and removal from roots. Plant Soil 30, 105–108 (1969). https://doi.org/10.1007/BF01885266
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DOI: https://doi.org/10.1007/BF01885266