The Bordered Pit Membrane in Differentiating Balsam Fir

Authors

  • R. A. Parham
  • W. M. Baird

Keywords:

<i>Abies balsamea</i>, wood structure, electron microscopy

Abstract

Bordered pit membranes in the cambial zone of balsam fir [Abies balsamea (L.) Mill.] were studied via surface replica and transverse section. An initially solid membrane is gradually perforated at tracheid maturity to yield a peripherally permeable margo bounded by a denser annulus and centrally thickened torus. Large, radially directed microfibrils in the margo are present at an early stage of pit development and do not arise as a result of pit aspiration. Relevance of findings to recent literature and viewpoints is discussed.

References

Bauch, J., W. Liese, and R. Schultz. 1972. The morphological variability of the bordered pit membranes in gymnosperms. Wood Sci. Technol. 6(3):165-184.nCôté, W. A., Z. Koran, and A. C. Day. 1964. Replica techniques for electron microscopy of wood and paper. Tappi 47(8):477-484.nDunning, C. E. 1968. Cell-wall morphology of longleaf pine latewood. Wood Sci. 1(2):65-76.nFengel, D. 1966. Development and ultrastructure of bordered pits in the Pinaceae (in German). Sven. Papperstidn. 69(7):232-244.nFengel, D. 1972. Structure and function of the membrane in softwood bordered pits. Holz-forschung 26(1):1-9.nFujikawa, S., and S. Ishida. 1972. Study on the pit of wood cells using scanning electron microscopy. (3). Structural variation of bordered pit membrane on the radial wall between tracheids in Pinaceae species. J. Jap. Wood Res. Soc. 18(10):477-483.nJohansen, D. A. 1940. Plant microtechnique. McGraw-Hill Book Co., New York.nMurmanis, L., and I. B. Sachs. 1969. Structure of pit border in Pinus strobus L. Wood Fiber 1(1):7-17.nO'Brien, T. P. 1970. Further observations on hydrolysis of the cell wall in the xylem. Protoplasma 69(1):1-14.nPanshin, A. J., and C. deZeeuw. 1970. Textbook of wood technology. v. I, 3rd edition. McGraw-Hill Book Co., New York.nSachs, I. B., and R. E. Kinney. 1972. An "ultrafilter" in the margo of mature bordered pits. Pages 206-207 in Proc. 30th Annual EMSA Meeting. Claitor's Publishing Division, Baton Rouge, La.nSpurr, A. R. 1969. A low-viscosity epoxy resin embedding medium for electron microscopy. J. Ultrastruct. Res. 26:31-43.nSpurr, A. R. 1969. The ultrastructure of southern pine bordered pit membranes as revealed by specialized drying techniques. Wood Fiber 1(2):110-123.nSpurr, A. R. 1970. Origin of pit margo microfibrils. Wood Fiber 2(3):285-288.nSpurr, A. R. 1972. The ultrastructure of differentiating and mature bordered pit membranes from cypress (Taxodium distichum L. Rich.). Wood Fiber 4(2):87-94.nThomas, R. J. 1968. The development and ultra-structure of the bordered pit membrane in the Southern yellow pines. Holzforschung 22(2):38-44.n

Downloads

Published

2007-06-05

Issue

Number 1 / Spring 1973

Section

Research Contributions

License

The copyright of an article published in Wood and Fiber Science is transferred to the Society of Wood Science and Technology (for U. S. Government employees: to the extent transferable), effective if and when the article is accepted for publication. This transfer grants the Society of Wood Science and Technology permission to republish all or any part of the article in any form, e.g., reprints for sale, microfiche, proceedings, etc. However, the authors reserve the following as set forth in the Copyright Law:

1. All proprietary rights other than copyright, such as patent rights.

2. The right to grant or refuse permission to third parties to republish all or part of the article or translations thereof. In the case of whole articles, such third parties must obtain Society of Wood Science and Technology written permission as well. However, the Society may grant rights with respect to Journal issues as a whole.

3. The right to use all or part of this article in future works of their own, such as lectures, press releases, reviews, text books, or reprint books.