Growth and Permeability of Century-Old Cells

@article{MacdougalGrowthAP,
  title={Growth and Permeability of Century-Old Cells},
  author={Daniel Trembly Macdougal},
  journal={The American Naturalist},
  volume={60},
  pages={393 - 415}
}
  • D. Macdougal
  • Published 1 September 1926
  • Biology
  • The American Naturalist
(1) Cells of the medulla of Carnegiea gigantea may continue to grow for nearly a century and to be active until the death of the tree. (2) Parenchymatous cells of the medulla retain their meristematic condition during the longer period mentioned. (3) Great numbers of parenchymatous cells of all ages are transformed into vascular bundles forming strands connecting with the woody cylinder. (4) The estimated rate of enlargement of medullary cells is greater in the second than in the first half… 

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References

The Composition of the Cell-Wall at the Apical Meristem of Stem and Root

It is a striking feature of the growth of any highly organised plant body that the construction of new protoplasm and consequent formation of new cells is usually strictly localised to certain