Functional Diversity of Various Constituents of a Single Root System

Waisel, Y.; Eshel, Amram

doi:10.1201/9780203909423.ch9

Cited by 73 publications

(64 citation statements)

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“…For this reason a definition of different categories has been attempted on the basis of differences in morphological and physiological parameters observed between roots (Pagès & Aries, 1988;Atger & Edelin, 1994;Jourdan & Rey, 1997b;Waisel & Eshel, 2002;Danjon et al, 2005). The most common division is the one distinguishing coarse from fine roots that, despite the semantic meaning of the two terms, which highlights only the occurrence of a difference in diameter, assumes that a functional difference exists i.e.…”

Section: Categorization Of Roots In Modellingmentioning

confidence: 99%

Towards developmental modelling of tree root systems

Tobin

Čermák

Chiatante

et al. 2007

Plant Biosystems - An International Journal Dealing with all As

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Knowledge of belowground structures and processes is essential for understanding and predicting ecosystem functioning, and consequently in the development of adaptive strategies to safeguard production from trees and woody plants into the future. In the past, research has mainly been concentrated on growth models for the prediction of agronomic or forest production. Newly emerging scientific challenges, e.g. climate change and sustainable development, call for new integrated predictive methods where root systems development will become a key element for understanding global biological systems. The types of input data available from the various branches of woody root research, including biomass allocation, architecture, biomechanics, water and nutrient supply, are discussed with a view to the possibility of incorporating them into a more generic developmental model. We discuss here the main focus of root system modelling to date, including a description of simple allometric biomass models, and biomechanical stress models, and then build in complexity through static growth models towards architecture models. The next progressive and logical step in developing an inclusive developmental model that integrates these modelling approaches is discussed.

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Section: Categorization Of Roots In Modellingmentioning

confidence: 99%

Towards developmental modelling of tree root systems

Tobin

Čermák

Chiatante

et al. 2007

Plant Biosystems - An International Journal Dealing with all As

View full text Add to dashboard Cite

show abstract

“…Leaf expansion of wheat is more impaired when drought affects seminal roots than nodal roots [88], and contribution of the seminal roots to the whole plant exceeds what could be expected from their fractal mass [89]. Navara [56] showed that radicle and seminal roots of maize play a dominant role in the water supply during a significant part of the plant life span.…”

Section: Variations Among Root Typesmentioning

confidence: 99%

“…As was shown in Section 3.1.2 for root growth and branching, a root system, should, from a functional viewpoint be regarded (i) as a population of individual roots behaving differently from each other [89], (ii) as a function of tissue differentiation and (iii) in response to changing environmental conditions (plasticity).…”

Section: From Soil Exploration To Resource Acquisitionmentioning

confidence: 99%

Soil exploration and resource acquisition by plant roots: an architectural and modelling point of view

Doussan¹,

Pagès

Pierret

2003

Agronomie

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-We provide a brief overview on soil exploration and resource extraction by roots during the course of plant development. First, we examine how roots explore the soil volume in relation with the heterogeneity of soil conditions. We then consider resource acquisition by roots and root systems, taking into account the root system's heterogeneous functioning and its variable degree of plasticity. In extensive, complex and dynamic systems such as root systems, processes of soil exploration and resource acquisition can be analysed through the unifying point of view of root system architecture. We exemplify how a modelling approach based on the concepts of functional architecture has potential to provide sharper insight into the soil exploration/utilization processes. root system / model / architecture / review / soil exploration Résumé -Exploration du sol et acquisition des ressources hydro-minérales par les systèmes racinaires des végétaux : un point de vue architectural et de modélisation. Nous présentons une courte revue décrivant les grandes étapes de colonisation et d'exploitation du sol durant le développement de la plante. Nous montrons tout d'abord comment les racines explorent le sol en interagissant avec l'hétérogénéité des conditions de sol (du point de vue des nutriments ou des contraintes à la croissance). De cette vision essentiellement géométrique (exploration), nous passerons à l'exploitation des ressources par les racines en considérant l'hétérogénéité de fonctionnement du système racinaire ainsi que son plus ou moins fort degré de plasticité. Ces processus d'exploration et d'exploitation du sol seront présentés sous l'angle unificateur de la prise en compte de l'architecture racinaire. Dans des systèmes complexes et très dynamiques, comme un système racinaire, nous montrerons, avec des exemples récents, comment la modélisation, fondée sur une architecture fonctionnelle, permet d'aller plus loin dans la compréhension des processus d'exploration/exploitation du sol par les plantes. système racinaire / modélisation / architecture / revue / exploration du sol

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“…The design of SmartRoot was largely influenced by Yoav Waisel's perspective that root systems consist of populations of roots of different types, ages, and topological and spatial locations (Waisel and Eshel, 2002). The focus, therefore, was placed on individual root behavior rather than on cumulated variables that are more difficult to interpret.…”

Section: Resultsmentioning

confidence: 99%

A Novel Image-Analysis Toolbox Enabling Quantitative Analysis of Root System Architecture

Lobet¹,

Pagès²,

Draye³

2011

Plant Physiology

426

377

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We present in this paper a novel, semiautomated image-analysis software to streamline the quantitative analysis of root growth and architecture of complex root systems. The software combines a vectorial representation of root objects with a powerful tracing algorithm that accommodates a wide range of image sources and quality. The root system is treated as a collection of roots (possibly connected) that are individually represented as parsimonious sets of connected segments. Pixel coordinates and gray level are therefore turned into intuitive biological attributes such as segment diameter and orientation as well as distance to any other segment or topological position. As a consequence, user interaction and data analysis directly operate on biological entities (roots) and are not hampered by the spatially discrete, pixel-based nature of the original image. The software supports a sampling-based analysis of root system images, in which detailed information is collected on a limited number of roots selected by the user according to specific research requirements. The use of the software is illustrated with a time-lapse analysis of cluster root formation in lupin (Lupinus albus) and an architectural analysis of the maize (Zea mays) root system. The software, SmartRoot, is an operating system-independent freeware based on ImageJ and relies on cross-platform standards for communication with data-analysis software.

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Functional Diversity of Various Constituents of a Single Root System

Cited by 73 publications

References 0 publications

Towards developmental modelling of tree root systems

Towards developmental modelling of tree root systems

Soil exploration and resource acquisition by plant roots: an architectural and modelling point of view

A Novel Image-Analysis Toolbox Enabling Quantitative Analysis of Root System Architecture

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