BALDAZZI , Valentina

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Les nématodes à galles du genre Meloidogyne sont extrêmement polyphages et s'attaquent aux ra-cines de plantes en formant des protubérances racinaires appelées "galles". Les galles entraînent uneréduction progressive de la fonctionnalité de l'appareil racinaire, réduisant la croissance et le rendementdes plantes, pouvant aller jusqu'à sa...

The development of a new organ is the result of coordinated events of cell division and expansion, in strong interaction with each other. This paper presents an improved version of a tomato model, which includes cells division, endoreduplication and expansion processes. The model is used to investigate the interaction among these developmental...

The development of a new organ is the result of coordinated events of cell division and expansion, in strong interaction with each other. This study presents a dynamic model of tomato fruit development that includes cell division, endoreduplication, and expansion processes. The model is used to investigate the potential interactions among these...

The development of a new organ is the result of coordinated events of cell division and expansion, in strong interaction with each other. This paper presents a dynamic model of tomato fruit development that includes cells division, endoreduplication and expansion processes. The model is used to investigate the interaction among these...

Fruits and vegetables are a main source of health compounds and a hedonic constituent of human diet. In the context of global change, plants will be facing increasing abiotic and biotic constraints. Therefore, innovations are expected in order to improve plant adaptation these constraints as well as to reduce water, nutrients and chemical...

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The concentrations of sugars in fruit vary with fruit development, environment, and genotype.In general, there were weak correlations between the variations in sugar concentrations andthe activities of enzymes directly related with the synthesis or degradation of sugars. Thisfinding suggests that the relationships between enzyme activities and...

The organoleptic properties of peach, as fruit in general, largely depend on the accumulated sugars and acids. From sucrose, glucose and fructose, main sugars found in peach, fructose is the sweetest one. While commercial peach has equivalent fructose and glucose concentration, some wild or ornamental accessions display an imbalanced...

Root-knot nematodes (RKN) of the genus Meloidogyne spp. cause considerable yield losses in numerous crops worldwide. The dynamics and outcomes of crop–pest interactions depend on the ecological conditions, including the phenotypes of the interacting species, their physiology and the abiotic environment. In theoretical ecology, most mathematical...

Fruit taste is largely affected by the concentration of soluble sugars. Moreover sugar metabolism is central because it feeds respiration and acid metabolism via glycolysis and provides carbon for synthesis of structural compounds (cell wall). Concentrations of sugars in fruit vary according to fruit development, environment and genotype. In...

Root-knot nematodes (RKN) of the genus Meloidogyne spp. cause considerable yield losses in numerous crops worldwide. The dynamics and outcomes of crop--pest interactions depend on the ecological conditions, including the phenotypes of the interacting species, their physiology and the abiotic environment. We are particularly interested in...

Root-knot nematodes (RKN) of the genus Meloidogyne spp. cause considerable yield losses in numerous crops worldwide. The dynamics and outcomes of crop--pest interactions depend on the ecological conditions, including the phenotypes of the interacting species, their physiology and the abiotic environment. In theoretical ecology, most...

At the cellular level, plant growth results from the competition between the so-called turgor pressure and mechanical resistance from the cell walls. The turgor pressure itself results from a difference of osmotic pressure between the interior and the exterior of the cell: the plasmic membrane is semi-permeable, so that a higher solute (sugars,...

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Different strains of a microorganism growing in the same environment display a wide variety of growth rates and growth yields. We developed a coarse-grained model to test the hypothesis that different resource allocation strategies, corresponding to different compositions of the proteome, can account for the observed rate-yield variability. The...

Microbial growth consists of the conversion of nutrients from the environment into biomassand small energy cofactors (ATP, NADH, NADPH, ...) driving biomass synthesis forward. Twomacroscopic criteria for characterizing microbial growth are growth rate and growth yield. Theformer refers to the rate of conversion of substrate into biomass, and...

Integrating genetic information into dynamical models is key to understand variations among genotypes and improve crop performances face to current agronomic and ecological constraints. A first and necessary step in building gene-to-phenotype models is the calibration of a large number of genotypes. We compared here two different strategies for...

Abstract Different strains of a microorganism growing in the same environment display a wide variety of growth rates and growth yields. We developed a coarse-grained model to test the hypothesis that different resource allocation strategies, corresponding to different compositions of the proteome, can account for the observed rate-yield...

Different strains of a microorganism growing in the same environment display a wide variety of growth rates and growth yields. We developed a coarse-grained model to test the hypothesis that different resource allocation strategies, corresponding to different compositions of the proteome, can account for the observed rate-yield variability. The...

Architectural properties of a fruit, such as its shape, vascular patterns, and skin morphology, play a significant role in determining the distributions of water, carbohydrates, and nutrients inside the fruit. Understanding the impact of these properties on fruit quality is difficult because they develop over time and are highly dependent on...

Several studies have been conducted to understand the dynamic of primary metabolisms in fruit by translating them into mathematics models. An ODE kinetic model of sugar metabolism has been developed by Desnoues et al. (2018) to simulate the accumulation of different sugars during peach fruit development. Two major drawbacks of this model are...

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