MBI Videos
Videos by Workshop 1: Mathematical Modeling of Plant Development
-
A brief review of progress and some remaining challenges in modelling plant development
Vince GutschickAs part of a selective review of progress in modelling of plant development, I wish to offer a larger context, extending to the evolutionary scale, and mostly to pose a set of questions or challenges to modellers.
First, I would like to affirm some premises that I believe are widely shared by modellers. Why do we make models?: 1) to predict plant (or stand o... -
-
Combining multiple modeling approaches to design plant ideotypes for specific climates
Thierry SimonneauModeling plant growth and development underwent considerable development with strong incentives from various consortia. It emerged as an efficient tool in ecology and genetics to face new challenges raised by competition for resources and to benefit from breakthroughs in biotechnology. In this presentation, we propose a classification of approaches used in modeling plants ... -
Optimal Control of Dynamical Biological System: Simplified Model of Balanced Growth and Development
Ilya IoslovichA dynamical biological system containing a vegetable crop and control tools for protected and intensive cultivation is considered. To optimize an economical criterion along the growing season, model based control must be designed. A special simplified biological model was developed for the purpose of determining the control inputs. This model uses the main biological prope... -
Allocation dilemmas in plants
Jan KozlowskiThere are annual and perennial plants; perennials may reproduce once in life (semelparity, monocarpic perennials) or repeatedly (iteroparity). Perennial herbs lose virtually all vegetative parts but storage organs before winter, whereas shrubs and trees retain large part or even most of vegetative mass. Theory of optimal resource allocation helps to predict important featu... -
Model-assisted integration of physiological and environmental constraints affecting the dynamic and spatial patterns of root water uptake from soils
Xavier DrayeDue 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 upta... -
Using models of plant hydraulic function to predict gas exchange, growth, and survival in response to environment and ontogeny
John SperryModels of plant hydraulic resistance are useful because they provide mechanistically anchored predictions of plant gas exchange and survival in response to environmental stress and ontogeny. Flow resistance in soil and plant xylem can be modeled relatively easily because the processes are largely physical and linked to environment and plant size in ways that can be readily... -
Simplifying modeling asumptions in the GreenLab models and methods for parameter identification for trees
Véronique LetortNo description available.... -
Using functional-structural plant modeling to study, understand and simulate fruit tree physiology, architecture, growth and production responses to changes in genetics, environment and management
Ted DeJongPerennial deciduous fruit trees are very complex organisms that are governed and influenced by a multitude of factors. Empirical research approaches are generally limited to dealing with a couple factors at a time and integration of the effects of multiple factors affecting tree growth and productivity are generally limited to verbal descriptions and displaying data with t... -
On functional-structural plant modelling
Jan VosModels are simplified representations of a system, i.e. a limited part of reality. Structure and properties of specific models are chosen depending on the purpose they serve. These purposes include: summarizing data, assisting in the analysis of experimental data, testing of hypotheses, extrapolation of system behaviour beyond the conditions that were covered experimentall... -
At which scale modeling plant-climate-pathogen interactions to find new levers in pest management? - Phylloclimate a key variable to study interactions?
Michael ChelleFungal diseases are a major concern for crop production. Up to now crop protection has mainly relied on fungicide sprays and host genetic resistance. However, their intensive use boosts the adaptation of fungal populations, causing the decrease of pathogen sensivity to fungicides and the breakdown of host resistance. Therefore, novel crop management techniques have to be d... -
Modelling tree development : overview of open questions specific to fruit species
Evelyne CostesFruit trees present developmental characteristics which are similar to other perennials, such as the existence of ontogenetic gradients and dependencies between consecutive growth. However, because of their agronomical use, fruit tree species also raise specific issues. For instance, the practice of grafting on dwarfing rootstock considerably reduces the juvenile period du...
