Root: shoot

Immunogold localization of the pectic epitope has been performed on different types of cells cell suspensions, roots, shoots, meristems, coleoptiles, pollen grains, protoplasts from different species carrot, sugar beet, tobacco, oat... The pattern of labeling was always the same polygalacturonic acid was essentially located on the material expanded at three-way junctions between cells or lining intercellular space, but was not found in primary walls. No epitope could be located close to the plasma membrane (Fig. lO.a). Middle lamellae far from junction zones and walls of meristematic cells were never labeled. 

M. van Noordwijk and S. C. van de Geijn, Root, shoot and soil parameters required for proeess-oriented models of crop growth limited by water or nutrients. Plant Soil I8S (1996). 

Groot IT, van Bodegom PM, Meijer HAJ, Harren FJM. Gas transport through the root-shoot transition zone of rice tillers. Plant Soil. 2005 277 107-116. 

Experimental Soil Root Length (mm) Shoot Length Inhibition % Root Shoot Amount of Crude Organic Extract (mg/seed) Amount of Soil Extracted (g/seed)... 

Method of Obtaining Organics from Experimental Soil Root Shoot Inhibition % Amount of Crude Amount of... 

V in recent and -0.24 V for two-year-old needles, V. myrtillus -0.26 and D.flexuosa -0.165 V), similar to values for polycarboxylate ligands rather than amino acids. This suggests that, for a variety of only loosely related plant species which in addition are supported by quite unlike kinds of mykorrhiza, sigifificant parts of transport and metal fractionation occur beyond the roots (where the doubly labeled C- + N-glycine was recovered (Nasholm et al. 1998)), with the root/shoot interfacial region being the most probable bottleneck or site of control. 

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