TY  - JOUR
AU  - Draye, X.
AU  - Kim, Y.
AU  - Lobet, G.
AU  - Javaux, M.
TI  - Model-assisted integration of physiological and environmental constraints affecting the dynamic and spatial patterns of root water uptake from soils
JO  - The journal of experimental botany
VL  - 61
SN  - 0022-0957
CY  - Oxford
PB  - Univ. Press
M1  - PreJuSER-11694
SP  - 2145 - 2155
PY  - 2010
N1  - This work was supported by the Inter-University Attraction Pole Programme - Belgian Science Policy (PAI), and the Communaute Francaise de Belgique - Actions de Recherches Concertees (ARC).
AB  - Due in part to recent progress in root genetics and genomics, increasing attention is being devoted to root system architecture (RSA) for the improvement of drought tolerance. The focus is generally set on deep roots, expected to improve access to soil water resources during water deficit episodes. Surprisingly, our quantitative understanding of the role of RSA in the uptake of soil water remains extremely limited, which is mainly due to the inherent complexity of the soil-plant continuum. Evidently, there is a need for plant biologists and hydrologists to develop together their understanding of water movement in the soil-plant system. Using recent quantitative models coupling the hydraulic behaviour of soil and roots in an explicit 3D framework, this paper illustrates that the contribution of RSA to root water uptake is hardly separable from the hydraulic properties of the roots and of the soil. It is also argued that the traditional view that either the plant or the soil should be dominating the patterns of water extraction is not generally appropriate for crops growing with a sub-optimal water supply. Hopefully, in silico experiments using this type of model will help explore how water fluxes driven by soil and plant processes affect soil water availability and uptake throughout a growth cycle and will embed the study of RSA within the domains of root hydraulic architecture and sub-surface hydrology.
KW  - Environment
KW  - Kinetics
KW  - Models, Theoretical
KW  - Plant Roots: chemistry
KW  - Plant Roots: growth & development
KW  - Plant Roots: physiology
KW  - Plant Transpiration
KW  - Soil: analysis
KW  - Water: metabolism
KW  - Soil (NLM Chemicals)
KW  - Water (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:20453027
UR  - <Go to ISI:>//WOS:000277987500009
DO  - DOI:10.1093/jxb/erq077
UR  - https://juser.fz-juelich.de/record/11694
ER  -