Accounting for sap flow from different parts of the root system improves the prediction of xylem ABA concentration in plants grown with heterogeneous soil moisture

IC Dodd, G Egea, WJ Davies - Journal of Experimental botany, 2008 - academic.oup.com
When soil moisture is heterogeneous, sap flow from, and ABA status of, different parts of the
root system impact on leaf xylem ABA concentration ([X-ABA] leaf). The robustness of a …

Root water potential integrates discrete soil physical properties to influence ABA signalling during partial rootzone drying

IC Dodd, G Egea, CW Watts… - Journal of Experimental …, 2010 - academic.oup.com
To investigate the influence of different growing substrates (two mineral, two organic) on root
xylem ABA concentration ([ABA] root) and the contribution of the drying root system to total …

Sap fluxes from different parts of the rootzone modulate xylem ABA concentration during partial rootzone drying and re-wetting

JG Pérez-Pérez, IC Dodd - Journal of Experimental Botany, 2015 - academic.oup.com
Previous studies with partial rootzone drying (PRD) irrigation demonstrated that alternating
the wet and dry parts of the rootzone (PRD-Alternated) increased leaf xylem ABA …

Long‐distance abscisic acid signalling under different vertical soil moisture gradients depends on bulk root water potential and average soil water content in the root …

J Puertolas, R Alcobendas, JJ Alarcon… - Plant, Cell & …, 2013 - Wiley Online Library
To determine how root‐to‐shoot abscisic acid (ABA) signalling is regulated by vertical soil
moisture gradients, root ABA concentration ([ABA] root), the fraction of root water uptake …

Abscisic acid signalling when soil moisture is heterogeneous: decreased photoperiod sap flow from drying roots limits abscisic acid export to the shoots

IC Dodd, G Egea, WJ Davies - Plant, Cell & Environment, 2008 - Wiley Online Library
To investigate the contribution of different parts of the root system to total sap flow and leaf
xylem abscisic acid (ABA) concentration ([X‐ABA] leaf), individual sunflower (Helianthus …

Soil moisture heterogeneity during deficit irrigation alters root-to-shoot signalling of abscisic acid

IC Dodd - Functional Plant Biology, 2007 - CSIRO Publishing
The effects of different irrigation techniques on leaf xylem ABA concentration ([X-ABA] leaf)
were compared in tomato (Lycopersicon esculentum Mill.). During partial rootzone drying …

Sequential response of whole plant water relations to prolonged soil drying and the involvement of xylem sap ABA in the regulation of stomatal behaviour of sunflower …

J Zhang, WJ Davies - New phytologist, 1989 - Wiley Online Library
Sunflower plants (Helianihus animus cv. Tall Single Yellow} were grown in the greenhouse
in drain pipes (100 mm inside diameter and 1 m long) rilled with John Innes No. 2 compost …

Stomatal control by both [ABA] in the xylem sap and leaf water status: a test of a model for draughted or ABA‐fed field‐grown maize

F Tardieu, J Zhang, DJG Gowing - Plant, Cell & Environment, 1993 - Wiley Online Library
ABSTRACT A model of maize stomatal behaviour has been developed, in which stomatal
conductance is linked to the concentration of abscisic acid ([ABA]) in the xylem sap, with a …

Accumulation rate of ABA in detached maize roots correlates with root water potential regardless of age and branching order

T Simonneau, P Barrieu, F Tardieu - Plant, Cell & Environment, 1998 - Wiley Online Library
How much ABA can be supplied by the roots is a key issue for modelling the ABA‐mediated
influence of drought on shoot physiology. We quantified accumulation rates of ABA (SABA) …

Changes in the concentration of ABA in xylem sap as a function of changing soil water status can account for changes in leaf conductance and growth

J Zhang, WJ Davies - Plant, Cell & Environment, 1990 - Wiley Online Library
Maize seedlings (Zea mays L. John Innes F1 hybrid) were grown in a greenhouse in l‐m‐
long tubes of soil. When the plants were well established, water was withheld from half of the …