The University of Southampton
University of Southampton Institutional Repository

Water pathways in higher plants - I. free space in wheat leaves

Tanton, T.W. and Crowdy, S.H. (1970) Water pathways in higher plants - I. free space in wheat leaves Journal of Experimental Botany, 101, (1), pp. 102-111. (doi:10.1093/jxb/21.1.102).

Record type: Article


A technique has been developed for the study of pathways of water movement in the xylem and free space of wheat leaves. Plants were treated with Lead-EDTA chelate through either the roots or the leaves; after treatment the lead was precipitated in situ as lead sulphide with hydrogen sulphide gas and its location determined by light and electron microscopy.

Bulk water movement was in the lumen of the xylem, where there was always a heavy deposit of lead sulphide after root treatments. Outside the xylem the deposits were confined to the cell walls and were most dense in the middle lamella. Deposits were not found in the cells themselves. The main zones of water loss, marked by heavy deposits of lead sulphide, were associated with the stomata, the junctions of the periclinal walls of the epidermal cells, and the cuticle, leaf hairs, and specialized epidermal cells with pitted walls associated with the vascular bundles.

Entry of lead chelate into the leaves was adequately described by a diffusion model. The free space seemed to be located mainly in the water of hydration of the pectin middle lamella and was esmated to occupy 3 to 5 per cent of the volume of the tissue.

Full text not available from this repository.

More information

Published date: February 1970


Local EPrints ID: 75594
ISSN: 0022-0957
PURE UUID: 04f8b2d8-bc38-40ca-ad91-8174fbee2821

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:42

Export record


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.