@article{fdi:010071049, title = {{V}irtual plants need water too : functional-structural root system models in the context of drought tolerance breeding}, author = {{N}dour, {A}. and {V}adez, {V}. and {P}radal, {C}. and {L}ucas, {M}ika{\¨e}l}, editor = {}, language = {{ENG}}, abstract = {{D}eveloping a sustainable agricultural model is one of the great challenges of the coming years. {T}he agricultural practices inherited from the {G}reen {R}evolution of the 1960s show their limits today, and new paradigms need to be explored to counter rising issues such as the multiplication of climate-change related drought episodes. {T}wo such new paradigms are the use of functional-structural plant models to complement and rationalize breeding approaches and a renewed focus on root systems as untapped sources of plant amelioration. {S}ince the late 1980s, numerous functional and structural models of root systems were developed and used to investigate the properties of root systems in soil or lab-conditions. {I}n this review, we focus on the conception and use of such root models in the broader context of research on root-driven drought tolerance, on the basis of root system architecture ({RSA}) phenotyping. {S}uch models result from the integration of architectural, physiological and environmental data. {H}ere, we consider the different phenotyping techniques allowing for root architectural and physiological study and their limits. {W}e discuss how {QTL} and breeding studies support the manipulation of {RSA} as a way to improve drought resistance. {W}e then go over the integration of the generated data within architectural models, how those architectural models can be coupled with functional hydraulic models, and how functional parameters can be measured to feed thosemodels. {W}e then consider the assessment and validation of those hydraulicmodels through confrontation of simulations to experimentations. {F}inally, we discuss the up and coming challenges facing root systems functional-structural modeling approaches in the context of breeding.}, keywords = {functional structural plant model ; drought ; phenotyping ; root system ; architecture ; plant development and physiology ; breeding}, booktitle = {}, journal = {{F}rontiers in {P}lant {S}cience}, volume = {8}, numero = {}, pages = {art. 1577 [18 p.]}, ISSN = {1664-462{X}}, year = {2017}, DOI = {10.3389/fpls.2017.01577}, URL = {https://www.documentation.ird.fr/hor/fdi:010071049}, }