Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Silicon in the Roots of Higher Plants

A. G. Sangster
American Journal of Botany
Vol. 65, No. 9 (Oct., 1978), pp. 929-935
Stable URL: http://www.jstor.org/stable/2442679
Page Count: 7
  • Read Online (Free)
  • Download ($12.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Silicon in the Roots of Higher Plants
Preview not available

Abstract

Silicon (Si) distribution in the roots of Sorghastrum nutans (L) Nash and Sorghum bicolor (L) Moench. was investigated by means of the electron-probe microanalyzer and scanning electron microscope In both species, Si was confined to the inner tangential wall of the tertiary-phase endodermal cells in the form of nodular silica aggregates of similar morphology and X-ray intensity The results are compared to those for six closely related genera, as well as to studies of Si in the roots of species of other tribes of the family Poaceae The various types of root deposits occurring in the family are described, and their relationships discussed. It is concluded that the type of Si distribution exhibited is determined largely by the phylogenetic status of the genus, rather than by the basic pattern of root anatomy.

Page Thumbnails

  • Thumbnail: Page 
929
    929
  • Thumbnail: Page 
930
    930
  • Thumbnail: Page 
931
    931
  • Thumbnail: Page 
932
    932
  • Thumbnail: Page 
933
    933
  • Thumbnail: Page 
934
    934
  • Thumbnail: Page 
935
    935