Abscission layer, light micrograph

Abscission layer, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Abscission layer. Light micrograph of a longitudinal section through a stem from the flame nettle (Solenostemon scutellarioides), showing a developing abscission layer (purple, left). At this point a meristem of cork cambium (phellogen, light purple line) has formed from small cells, which will form a cork layer (phellem). When the leaf falls off this leaf scar of cork prevents the ingress of pathogens, loss of water and insulates the stem against fire damage. Magnification: x45 when printed at 10 centimetres wide.

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Keywords: abscission, abscission layer, anatomical, biological, biology, botanical, botany, cell, cells, cellular, deciduous, flame nettle, flora, internal structure, leaf fall, light micrograph, light microscope, lm, longitudinal, nature, part, parts, plant, plant anatomy, section, sectioned, solenostemon scutellarioides, stem, structural, tissue

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