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Xylem ABA controls the stomatal conductance of field-grown maize subjected to soil compaction and soil drying.

Tardieu, F. and Zhang, J. and Katerji, N. and Bethenod, O. and Palmer, S. and Davies, W. J. (1992) Xylem ABA controls the stomatal conductance of field-grown maize subjected to soil compaction and soil drying. Plant, Cell and Environment, 15 (2). pp. 193-198. ISSN 0140-7791

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Abstract

Stomatal conductance of individual leaves was measured in a maize field, together with leaf water potential, leaf turgor, xylem ABA concentration and leaf ABA concentration in the same leaves. Stomatal conductance showed a tight relationship with xylem ABA, but not with the current leaf water status or with the concentration of ABA in the bulk leaf. The relationship between stomatal conductance and xylem [ABA] was common for variations in xylem [ABA] linked to the decline with time of the soil water reserve, to simultaneous differences between plants grown on compacted, non-compacted and irrigated soil, and to plant-to-plant variability. Therefore, this relationship is unlikely to be fortuitous or due to synchronous variations. These results suggest that increased concentration of ABA in the xylem sap in response to stress can control the gas exchange of plants under field conditions.

Item Type: Article
Journal or Publication Title: Plant, Cell and Environment
Uncontrolled Keywords: stomatal conductance • ABA • leaf water potential • soil water status • maize • soil compaction
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > School of Computing & Communications
Faculty of Science and Technology > Lancaster Environment Centre
VC's Office
ID Code: 22863
Deposited By: ep_ss_importer
Deposited On: 06 Jan 2009 11:53
Refereed?: No
Published?: Published
Last Modified: 17 Sep 2013 08:18
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22863

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