The Presence of Callose in Cork Cells


  • John D. Litvay
  • Robert L. Krahmer


<i>Pseudotsuga menziesii</i>, <i>Abies</i> spp., <i>Tsuga heterophylla</i>, <i>Acer macrophyllum</i>, <i>Quercus suber</i>, cork, callose, phellem, ultraviolet microscopy, transmission electron microscopy


Observations of fluorescence with ultraviolet microscopy and staining with transmission electron microscopy indicate that a substance reacting like callose is present as a plugging material in pitlike areas in the walls of mature cork (phellem) cells.


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