FIGURE 6.

Immunolocalization of polysaccharide epitopes in plants growing on NH₄⁺ and NO₃^–. Distribution of xyloglucan in cell walls, sections labeled with LM25 antibody. Distribution of highly methylesterified homogalacturonans in cell walls – labeled with the LM20 antibody and low-methylesterified homogalacturonans – labeled with the LM19 antibody. Immunocytochemistry of plant cell walls was performed in the (A) petiole (scale bar = 200 μm), (B) leaf blade (scale bar = 200 μm) and (C) a close up of a leaf cell (scale bar = 20 μm) was performed. Representative results from four independent biological replicates are shown.