Results 181 to 190 of about 6,732 (212)

Functions of passage cells in the endodermis and exodermis of roots

Physiologia Plantarum, 1996
Passage cells frequently occur in the endodermis and exodermis but are not ubiquitous in either layer. Passage cells occur in the form of short cells in the dimorphic type of exodermis. In both layers, Casparian bands are formed in all cells, but the subsequent development of suberin lamellae and thick, cellulosic walls are delayed or absent in the ...
Carol A. Peterson, Daryl E. Enstone
exaly   +2 more sources

Cluster root development in Grevillea robusta (Proteaceae). II. The development of the endodermis in a determinate root and in an indeterminate, lateral root

New Phytologist, 1998
Light, fluorescence and electron microscopy were employed to follow the development of the endodermis in cluster roots and lateral roots of Grevillea robusta A. Cunn. ex R. Br.
Keith Skene
exaly   +2 more sources

Auxin reflux between the endodermis and pericycle promotes lateral root initiation [PDF]

EMBO Journal, 2013
Lateral root (LR) formation is initiated when pericycle cells accumulate auxin, thereby acquiring founder cell (FC) status and triggering asymmetric cell divisions, giving rise to a new primordium.
Tom Beeckman, Peter Marhavý, Eva Benkova   +2 more
exaly   +2 more sources

The endodermis as a checkpoint for nutrients

New Phytologist, 2016
SummaryPlant roots forage the soil for nutrients and transport them upwards to the aerial parts. Nutrients entering the plant are transported through the concentric layers of epidermis, cortex and endodermis before reaching the central vasculature. The endodermis is the innermost cortical cell layer that surrounds the vasculature.
openaire   +3 more sources

The root endodermis in Ranunculus acris. II. Histochemistry of the endodermis and the synthesis of phenolic compounds in roots

Canadian Journal of Botany, 1979
Results of histochemical tests performed on fresh root tissue of Ranunculus acris provide the following information on the chemical nature of the root endodermis: (i) the Casparian strip is impregnated with lipid and possibly lignin, (ii) the suberin lamellae stain positively for lipid and phenols with free hydroxyl groups, and (iii) the tertiary wall
M. G. Scott, R. L. Peterson
openaire   +1 more source

The mechanical role of the endodermis in Equisetum plant stems

American Journal of Botany, 2004
The endodermis of different species of the genus Equisetum has different configurations, two or one continuous layers or a sheath only around the vascular bundles. The question whether the endodermis contributes to the mechanical stability of the aerial shoots is investigated in two ways: In a direct approach, the endodermis of segments of E.
H-Ch, Spatz, A, Emanns
openaire   +2 more sources

The structure of the stem endodermis in etiolated pea seedlings

Canadian Journal of Botany, 1987
Differentiation of the endodermis was examined in third internodes of etiolated Pisum sativum L. cv. Alaska seedlings. The endodermis in young internodes contains large, sedimented amyloplasts; in older internodes, a casparian strip differentiates and the endodermis becomes depleted of starch except for the proximal region of the stem, which retains ...
openaire   +2 more sources

Secondary dilatation growth in the root endodermis

2001
Early secondary growth of roots with persisting cortex is the result of two different growth processes: Cambial growth and dilatation growth. Vascular cambium forms the secondary vascular tissues of the thickening vascular cylinder. At the same time, reactivated, peripherally situated cortex is adequately expanding by the dilatation growth.
Alexander Lux, Mária Luxová
openaire   +1 more source

An Oxidation and Adsorption Reaction for Differentiating the Endodermis and the Collenchyma

Stain Technology, 1946
A method is presented for a study of the endodermis and collenchyma in vascular plants. The method is useful in histologically isolating these tissues, particularly where the accepted anatomical features and the usual staining reactions are not definitive.
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XVIII.—A Study of the Foliar Endodermis in the Plantaginaceae

Transactions of the Royal Society of Edinburgh, 1933
While an endodermis in the leaf is a relatively rare occurrence amongst the Angiosperms, its presence has been noted as being fairly constant in a number of families; but it is only in the case of a few of these families that it has been treated in sufficient detail to indicate its representation generically. Mylius (8), in particular, has examined the
openaire   +1 more source