In:
Canadian Journal of Botany, Canadian Science Publishing, Vol. 58, No. 23 ( 1980-12-01), p. 2459-2466
Abstract:
Scanning electron microscopy and X-ray microanalysis of the ventral leaves of Selaginella emmeliana demonstrated high levels of silicon in the marginal sclereids and about one-half the abaxial epidermal cells. Although both of these cell types bear rows of knobs or warts on the outer tangential wall, the X-ray spectra indicate that silicon is distributed throughout the wall and that it is not concentrated in these projections. In S. emmeliana, stomata are confined to a band of low silicon cells overlying the midrib on the abaxial side of the leaf. A small proportion of these stomata also contain high levels of silicon and are characterized by a constricted stomatal aperture. A preliminary survey of three other species of Selaginella indicates that accumulation of silicon in the leaf epidermis is characteristic for each.
Type of Medium:
Online Resource
ISSN:
0008-4026
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
1980
detail.hit.zdb_id:
218116-2
detail.hit.zdb_id:
1481926-0
SSG:
12
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