Root growth models: towards a new generation of continuous approaches

Journal of Experimental Botany
L DupuyA Glyn Bengough

Abstract

Models of root system growth emerged in the early 1970s, and were based on mathematical representations of root length distribution in soil. The last decade has seen the development of more complex architectural models and the use of computer-intensive approaches to study developmental and environmental processes in greater detail. There is a pressing need for predictive technologies that can integrate root system knowledge, scaling from molecular to ensembles of plants. This paper makes the case for more widespread use of simpler models of root systems based on continuous descriptions of their structure. A new theoretical framework is presented that describes the dynamics of root density distributions as a function of individual root developmental parameters such as rates of lateral root initiation, elongation, mortality, and gravitropsm. The simulations resulting from such equations can be performed most efficiently in discretized domains that deform as a result of growth, and that can be used to model the growth of many interacting root systems. The modelling principles described help to bridge the gap between continuum and architectural approaches, and enhance our understanding of the spatial development of root systems. Ou...Continue Reading

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Citations

Nov 3, 2010·Journal of Experimental Botany·Carlos D MessinaMark Cooper
Mar 19, 2013·Journal of Experimental Botany·Sarah M Rich, Michelle Watt
Jan 10, 2012·The Plant Cell·Joseph G Dubrovsky, Brian G Forde
Jan 10, 2012·The Plant Cell·Ive De SmetMalcolm Bennett
Jan 28, 2014·PloS One·Alexander BuckschJoshua S Weitz
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Nov 13, 2013·Bioprocess and Biosystems Engineering·Felix LenkThomas Bley
Mar 22, 2014·Annals of Botany·Michael Renton, Pieter Poot
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Aug 8, 2014·Frontiers in Plant Science·Robert BeyerPaul-Henry Cournède
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Sep 7, 2018·Journal of Agricultural and Food Chemistry·Liangbin HuJian Chen

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