Electron-probe Microanalysis Studies of Silicon in the Elongating Basal Internodes of Avena sativa (L.), Hordeum sativum (Jess.) and Triticum aestivum (L.)

Autor:	D. M. Bennett, D. Wynn Parry
Rok vydání:	1980
Předmět:	food.ingredient Silicon food and beverages chemistry.chemical_element Plant Science Plant anatomy Biology biology.organism_classification Vascular bundle Avena food Sativum chemistry Botany Endodermis Hordeum Plant stem
Zdroj:	Annals of Botany. 45:541-547
ISSN:	1095-8290 0305-7364
DOI:	10.1093/oxfordjournals.aob.a085858
Popis:	Silicon deposits in the elongating basal internodes of almost mature, field grown specimens of Avena sativa , Hordeum sativum and Triticum aestivum were investigated using electron-probe microanalysis. In A. sativa and H. sativum silicon was found to be confined to the cells in the endodermal layer, being present within the inner tangential and radial walls, and occasionally in the outer tangential wall. In T. aestivum some silicon was also located in walls of cells surrounding the vascular bundles. The anatomy of the internodal tissues is discussed for the three species from light micrographs. The endodermal layer is discontinuous in A. sativa and H. sativum , in the former species it partly extends around individual vascular bundles. In T. aestivum it forms a complete cylinder around the stelar region and also shows considerably more thickening of the inner tangential wall than in the other species. The results are discussed in relation to the anatomy of the internodal tissues and the possible function of silicon in the endodermis.
Databáze:	OpenAIRE
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