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Official Journal of the Japan Wood Research Society

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Relation between developmental changes on anatomical structure and on protein pattern in differentiating xylem of tension wood

Abstract

Tension wood was induced inEucalyptus camaldulensis L. by fixing the stem at an angle. Proteins in the differentiating tissue of tension wood were compared to those of normal wood on sodium dodecyl sulfate polyacrylamide gel electrophoresis. An obvious difference was found in the salt-soluble fraction of 14 days after inclination. At least five bands (19,22,37,41, and 55kDa) were specific in the differentiating tissue of tension wood. These proteins were bound to the cell wall, plasma membrane, or both by their electric charge; they were undetectable until 14 days after inclination. Mature tension wood was observed in the tissue at 14 days. Thus, all differentiating tissue at 14 days was produced after inclination. On the other hand, the differentiating zone at 7 days contained the same tissue, as in tension wood estimated by the vessel number and diameter during the early phase; and the tissue was indistinguishable from normal wood during the late phase. The proteins found here were related to the phenomenon occurring in the late stage of xylem differentiation.

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Correspondence to Kei'ichi Baba.

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Baba, K., Asada, T. & Hayashi, T. Relation between developmental changes on anatomical structure and on protein pattern in differentiating xylem of tension wood. J Wood Sci 46, 1–7 (2000). https://doi.org/10.1007/BF00779546

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Key words

  • Cell wall
  • Eucalyptus
  • Tension wood
  • Protein
  • Xylem